/* ============================================
   ROYAL SINGERS PRO - ESTILOS
   ============================================ */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Paleta Dorado y Negro */
    --gold-light: #d4af37;
    --gold: #c9a961;
    --gold-dark: #b8941e;
    --gold-darker: #8b6914;
    --brown: #6b4e1f;
    --brown-dark: #4a3415;
    --black: #000000;
    --black-soft: #1a1a1a;
    --black-medium: #2d2d2d;
    --text-gold: #d4af37;
    --text-brown: #8b6914;
    --text-dark: #1a1a1a;
    --text-light: #6b5d3f;
    --text-white: #ffffff;
    --bg-cream: #f5f1e8;
    --bg-light: #faf8f3;
    --bg-white: #ffffff;
    --border-gold: #d4af37;
    --border-brown: #8b6914;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-elegant: 'Playfair Display', serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
    box-sizing: border-box;
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
        max-width: 100%;
    }
}

/* ============================================
   HEADER / NAVBAR
   ============================================ */

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--black) 0%, var(--black-soft) 100%);
    backdrop-filter: blur(15px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(212, 175, 55, 0.2);
    border-bottom: 3px solid var(--border-gold);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

header.scrolled {
    box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.15);
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.95), rgba(26, 26, 26, 0.9));
    backdrop-filter: blur(20px);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.nav-center {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.6rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-gold);
    text-decoration: none;
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.7), 0 0 30px rgba(212, 175, 55, 0.4);
    transition: all 0.3s ease;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-light), var(--gold-dark));
    transition: width 0.4s ease;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.8);
}

.logo:hover::after {
    width: 100%;
}

.logo:hover {
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.9), 0 0 40px rgba(212, 175, 55, 0.5);
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2rem;
}

.pro-badge {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 0.9em;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--text-gold);
    text-decoration: none;
    font-weight: var(--font-weight-normal);
    transition: var(--transition-fast);
    position: relative;
    text-shadow: 0 0 5px rgba(212, 175, 55, 0.3);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    transition: var(--transition-normal);
    box-shadow: 0 0 5px var(--gold-light);
}

.nav-link:hover {
    color: var(--text-white);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.8);
}

.nav-link:hover::after {
    width: 100%;
}

/* Language Selector */
.language-selector {
    position: relative;
    z-index: 1001;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 148, 30, 0.15));
    border: 2px solid rgba(212, 175, 55, 0.5);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--text-gold);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    font-weight: var(--font-weight-semibold);
}

.language-btn:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.3), rgba(184, 148, 30, 0.25));
    border-color: var(--border-gold);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.5);
    transform: translateY(-2px);
}

.language-btn.active {
    border-color: var(--border-gold);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.6);
}

.lang-flag {
    font-size: 1.2rem;
    filter: drop-shadow(0 0 3px rgba(212, 175, 55, 0.5));
}

.lang-code {
    font-size: 0.85rem;
    font-weight: var(--font-weight-bold);
}

.lang-arrow {
    font-size: 0.7rem;
    transition: transform 0.3s ease;
    margin-left: var(--spacing-xs);
}

.language-btn.active .lang-arrow {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.95), rgba(26, 26, 26, 0.98));
    backdrop-filter: blur(20px);
    border: 2px solid var(--border-gold);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(212, 175, 55, 0.3);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1002;
    overflow: hidden;
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-white);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.lang-option:last-child {
    border-bottom: none;
}

.lang-option:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 148, 30, 0.15));
    color: var(--text-gold);
    padding-left: var(--spacing-lg);
}

.lang-option.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.3), rgba(184, 148, 30, 0.25));
    color: var(--text-gold);
    border-left: 3px solid var(--border-gold);
}

.lang-name {
    font-size: 0.95rem;
    font-weight: var(--font-weight-normal);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-gold);
    border-radius: 2px;
    transition: var(--transition-normal);
    box-shadow: 0 0 5px rgba(212, 175, 55, 0.5);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--black) 0%, var(--black-soft) 50%, var(--black) 100%);
    z-index: -2;
}

.sheet-music-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 35px,
            rgba(212, 175, 55, 0.05) 35px,
            rgba(212, 175, 55, 0.05) 37px
        );
    opacity: 0.3;
    z-index: -1;
}

.stars-hero {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.9), 0 0 30px rgba(212, 175, 55, 0.5);
    animation: twinkle 2s ease-in-out infinite, float-gentle 4s ease-in-out infinite;
    display: inline-block;
}

@keyframes twinkle {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(0.95);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes float-gentle {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

@keyframes slide-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glow-intense {
    0%, 100% {
        box-shadow: 0 0 20px rgba(212, 175, 55, 0.4), 0 0 40px rgba(212, 175, 55, 0.2);
    }
    50% {
        box-shadow: 0 0 30px rgba(212, 175, 55, 0.6), 0 0 60px rgba(212, 175, 55, 0.4);
    }
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(212, 175, 55, 0.1), transparent 50%);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: var(--text-white);
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.title-main {
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    background: linear-gradient(135deg, #d4af37 0%, #f4c430 50%, #d4af37 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.6), 2px 2px 6px rgba(0, 0, 0, 0.8);
    animation: shimmer 3s linear infinite;
    font-family: var(--font-elegant);
    letter-spacing: -0.5px;
}

.title-sub {
    font-size: 1.5rem;
    font-weight: var(--font-weight-normal);
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(184, 148, 30, 0.1));
    border-radius: var(--radius-lg);
    border: 2px solid rgba(212, 175, 55, 0.4);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.stat-item:hover::before {
    opacity: 1;
}

.stat-item:hover {
    transform: translateY(-5px) scale(1.05);
    border-color: var(--border-gold);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.4), 0 0 20px rgba(212, 175, 55, 0.3);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25), rgba(184, 148, 30, 0.15));
}

.stat-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.6));
}

.stat-number {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-gold);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-white);
    opacity: 0.9;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.phone-mockup {
    width: 350px;
    height: 700px;
    background: transparent;
    backdrop-filter: none;
    border-radius: 0;
    padding: 0;
    border: none;
    box-shadow: none;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.phone-mockup:hover {
    transform: translateY(-10px) scale(1.02);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: transparent;
    border-radius: 0;
    overflow: visible;
    box-shadow: none;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.phone-screenshot {
    width: auto;
    height: auto;
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    display: block;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(184, 148, 30, 0.08));
    padding: 30px;
    box-sizing: border-box;
    box-shadow: 0 20px 60px rgba(212, 175, 55, 0.5), 
                0 0 80px rgba(212, 175, 55, 0.3),
                inset 0 0 40px rgba(212, 175, 55, 0.15);
    border: 4px solid rgba(212, 175, 55, 0.4);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.phone-mockup:hover .phone-screenshot {
    transform: scale(1.05);
    box-shadow: 0 25px 70px rgba(212, 175, 55, 0.6), 
                0 0 100px rgba(212, 175, 55, 0.4),
                inset 0 0 50px rgba(212, 175, 55, 0.2);
    border-color: var(--border-gold);
}

.phone-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 800px;
    background: radial-gradient(ellipse, rgba(212, 175, 55, 0.3) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
    animation: glow-pulse 3s ease-in-out infinite;
    filter: blur(40px);
}

@keyframes glow-pulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 20px;
    height: 30px;
    border: 2px solid var(--text-white);
    border-radius: 15px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--text-white);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    color: var(--text-dark);
    box-shadow: var(--shadow-lg), 0 0 25px rgba(212, 175, 55, 0.5), 0 0 50px rgba(212, 175, 55, 0.2);
    border: 2px solid var(--border-gold);
    font-weight: var(--font-weight-bold);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl), 0 0 35px rgba(212, 175, 55, 0.7), 0 0 70px rgba(212, 175, 55, 0.3);
    background: linear-gradient(135deg, #f4c430, var(--gold-dark));
}

.btn-secondary {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25), rgba(184, 148, 30, 0.15));
    color: var(--text-white);
    border: 2px solid rgba(212, 175, 55, 0.6);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-secondary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.35), rgba(184, 148, 30, 0.25));
    border-color: var(--border-gold);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4), 0 0 20px rgba(212, 175, 55, 0.3);
}

.btn-pro {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    color: var(--text-dark);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(212, 175, 55, 0.7), 0 0 60px rgba(212, 175, 55, 0.3);
    border: 3px solid var(--border-gold);
    font-weight: var(--font-weight-bold);
    position: relative;
    overflow: hidden;
}

.btn-pro::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s;
}

.btn-pro:hover::before {
    left: 100%;
}

.btn-pro:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(212, 175, 55, 0.9), 0 0 80px rgba(212, 175, 55, 0.4);
    background: linear-gradient(135deg, #f4c430, var(--gold-dark));
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
}

.btn-footer {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 148, 30, 0.15));
    color: var(--text-white);
    border: 2px solid rgba(212, 175, 55, 0.5);
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-footer:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.35), rgba(184, 148, 30, 0.25));
    border-color: var(--border-gold);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.5), 0 0 20px rgba(212, 175, 55, 0.3);
}

.btn-icon {
    font-size: 1.2rem;
}

.btn-arrow {
    transition: var(--transition-fast);
}

.btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* ============================================
   SECTIONS
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--gold-dark), var(--brown));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* Stars Header */
.stars-header {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.6);
    animation: twinkle 3s ease-in-out infinite;
}

/* Features Section */
.features {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-cream), var(--bg-light));
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: linear-gradient(135deg, var(--bg-white), var(--bg-cream));
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    border: 2px solid var(--border-gold);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.15) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(212, 175, 55, 0.5), 0 0 80px rgba(212, 175, 55, 0.2);
    border-color: var(--gold-light);
    background: linear-gradient(135deg, #ffffff, #faf8f3);
}

.star-feature {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.5rem;
    animation: twinkle 2s ease-in-out infinite;
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.8));
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.6));
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 0 15px rgba(212, 175, 55, 0.9));
}

.feature-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--brown-dark);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--text-light);
    line-height: 1.8;
}

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--black) 0%, var(--black-soft) 100%);
    color: var(--text-white);
    position: relative;
}

.how-it-works::before {
    content: '🎼';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 4rem;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.how-it-works::after {
    content: '🎵';
    position: absolute;
    bottom: 20px;
    right: 20px;
    font-size: 4rem;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite 2s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.step-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(184, 148, 30, 0.1));
    border-radius: var(--radius-xl);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid rgba(212, 175, 55, 0.4);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.step-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.2), transparent);
    transition: left 0.6s;
}

.step-item:hover::before {
    left: 100%;
}

.step-item:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25), rgba(184, 148, 30, 0.15));
    border-color: var(--gold-light);
    box-shadow: 0 10px 40px rgba(212, 175, 55, 0.5), 0 0 30px rgba(212, 175, 55, 0.3);
    transform: translateX(10px) scale(1.01);
}

.step-number {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    min-width: 80px;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.step-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.6));
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-gold);
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.step-description {
    color: var(--bg-cream);
    line-height: 1.8;
    opacity: 0.9;
}

/* Tutorial Section */
.tutorial-section {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-cream), var(--bg-light));
    position: relative;
    overflow: hidden;
}

.tutorial-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 100px,
            rgba(212, 175, 55, 0.02) 100px,
            rgba(212, 175, 55, 0.02) 102px
        );
    z-index: 0;
}

.tutorial-section > .container {
    position: relative;
    z-index: 1;
}

/* Tutorial Navigation Grid - Large Square Buttons */
.tutorial-nav-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
    padding: 0 var(--spacing-md);
}

.tutorial-nav-btn {
    position: relative;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.95), rgba(0, 0, 0, 0.9));
    border: 3px solid var(--border-gold);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(212, 175, 55, 0.2);
    backdrop-filter: blur(10px);
}

.tutorial-nav-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.tutorial-nav-btn:hover::before {
    opacity: 1;
}

.tutorial-nav-btn:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--gold-light);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 50px rgba(212, 175, 55, 0.5);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.3), rgba(184, 148, 30, 0.25));
}

.tutorial-nav-btn:active {
    transform: translateY(-5px) scale(0.98);
}

.nav-btn-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.6) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    pointer-events: none;
}

.tutorial-nav-btn:hover .nav-btn-glow {
    width: 300px;
    height: 300px;
}

.nav-btn-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.nav-btn-icon {
    font-size: 4.5rem;
    filter: drop-shadow(0 0 15px rgba(212, 175, 55, 0.8));
    animation: float 3s ease-in-out infinite;
    margin-bottom: var(--spacing-sm);
}

.nav-btn-title {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--gold-light);
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.6), 0 2px 10px rgba(0, 0, 0, 0.3);
    font-family: var(--font-elegant);
    letter-spacing: 1px;
}

.nav-btn-subtitle {
    font-size: 1.1rem;
    color: #e0e0e0;
    font-weight: var(--font-weight-medium);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8), 0 0 5px rgba(212, 175, 55, 0.3);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tutorial-content {
    max-width: 900px;
    margin: 0 auto;
}

.tutorial-part {
    background: linear-gradient(135deg, var(--bg-white), var(--bg-cream));
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-brown);
    box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.tutorial-part::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
    transform: scaleX(0);
    transition: transform 0.4s;
}

.tutorial-part:hover::before {
    transform: scaleX(1);
}

.tutorial-part:hover {
    border-color: var(--border-gold);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(212, 175, 55, 0.4), 0 0 60px rgba(212, 175, 55, 0.2);
    transform: translateY(-8px) scale(1.01);
    background: linear-gradient(135deg, #ffffff, #f9f7f2);
}

.part-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-gold);
}

.part-title-wrapper {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.part-stars {
    font-size: 1rem;
    opacity: 0.8;
    animation: twinkle 3s ease-in-out infinite;
}

.part-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    border-radius: 50%;
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(212, 175, 55, 0.6), 0 0 40px rgba(212, 175, 55, 0.3);
    border: 3px solid var(--gold-dark);
    flex-shrink: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.part-number::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.tutorial-part:hover .part-number::before {
    opacity: 1;
}

.tutorial-part:hover .part-number {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(212, 175, 55, 0.8), 0 0 60px rgba(212, 175, 55, 0.4);
}

.part-title {
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    color: var(--brown-dark);
    font-family: var(--font-elegant);
}

.part-body {
    color: var(--text-light);
    line-height: 1.8;
}

.part-body p {
    margin-bottom: var(--spacing-sm);
}

.intro-text {
    font-size: 1.1rem;
    color: var(--brown-dark);
    font-weight: var(--font-weight-semibold);
}

.highlight-text {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 148, 30, 0.2));
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--border-gold);
    font-weight: var(--font-weight-semibold);
    color: var(--brown-dark);
}

.indicaciones-box, .instruction-box, .info-box {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.12), rgba(184, 148, 30, 0.08));
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
    border-left: 5px solid var(--border-gold);
    border: 2px solid rgba(212, 175, 55, 0.3);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.15);
    transition: all 0.3s ease;
}

.indicaciones-box:hover, .instruction-box:hover, .info-box:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.18), rgba(184, 148, 30, 0.12));
    border-color: var(--border-gold);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.25);
    transform: translateX(3px);
}

.info-box.pro-box {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.18), rgba(184, 148, 30, 0.12));
    border-left-color: var(--gold-dark);
    border-color: rgba(212, 175, 55, 0.4);
}

.certificates-box {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.12), rgba(184, 148, 30, 0.08));
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
    border-left: 5px solid var(--border-gold);
    border: 2px solid rgba(212, 175, 55, 0.3);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.15);
    transition: all 0.3s ease;
}

.certificates-box:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.18), rgba(184, 148, 30, 0.12));
    border-color: var(--border-gold);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.25);
    transform: translateX(3px);
}

.certificates-box p {
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--brown-dark);
}

.certificates-box ul {
    list-style: none;
    padding-left: 0;
    margin-top: var(--spacing-sm);
}

.certificates-box ul li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--text-dark);
}

.certificates-box ul li::before {
    content: '🏆';
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 148, 30, 0.15));
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-gold);
    margin: var(--spacing-lg) 0;
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.2);
    position: relative;
    overflow: hidden;
}

.highlight-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.2) 0%, transparent 70%);
    opacity: 0.5;
    animation: rotate 15s linear infinite;
}

.warning-box {
    background: linear-gradient(135deg, rgba(139, 105, 20, 0.15), rgba(107, 78, 31, 0.1));
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--gold-darker);
    border-left: 5px solid var(--gold-darker);
    margin: var(--spacing-lg) 0;
    box-shadow: 0 4px 15px rgba(139, 105, 20, 0.2);
    position: relative;
}

.warning-box::before {
    content: '⚠️';
    position: absolute;
    top: -15px;
    left: 20px;
    background: var(--bg-white);
    padding: 5px 10px;
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.question-highlight {
    font-size: 1.2rem;
    color: var(--brown-dark);
    margin-bottom: var(--spacing-md);
}

.feature-list {
    margin: var(--spacing-md) 0;
}

.steps-list {
    margin: var(--spacing-md) 0;
}

.step-item-list {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.08), rgba(184, 148, 30, 0.05));
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--border-gold);
    transition: all 0.3s ease;
}

.step-item-list:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.12), rgba(184, 148, 30, 0.08));
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.2);
}

.step-marker {
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* Organ items already defined earlier, removing duplicate */

.organ-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.organ-icon {
    font-size: 1.5rem;
}

.organ-item h4 {
    color: var(--brown-dark);
    margin-bottom: var(--spacing-xs);
    font-size: 1.3rem;
}

.organ-function {
    margin-bottom: var(--spacing-xs);
}

.organ-solution {
    margin-top: var(--spacing-xs);
    color: var(--brown-dark);
}

.emission-item {
    background: rgba(212, 175, 55, 0.08);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border-left: 4px solid var(--border-gold);
}

.emission-item h4 {
    color: var(--brown-dark);
    margin-bottom: var(--spacing-xs);
}

.final-note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(212, 175, 55, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--border-gold);
}

.observaciones-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.observacion-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.12), rgba(184, 148, 30, 0.08));
    border-radius: var(--radius-lg);
    border-left: 5px solid var(--border-gold);
    border: 2px solid rgba(212, 175, 55, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.15);
    position: relative;
    overflow: hidden;
}

.observacion-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--gold-light), var(--gold-dark));
    transform: scaleY(0);
    transition: transform 0.4s;
}

.observacion-item:hover::before {
    transform: scaleY(1);
}

.observacion-item:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.18), rgba(184, 148, 30, 0.12));
    transform: translateX(8px) scale(1.01);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.25), 0 0 15px rgba(212, 175, 55, 0.2);
    border-color: var(--border-gold);
}

.observacion-item.highlight {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(184, 148, 30, 0.15));
    border-left-color: var(--gold-dark);
    border: 2px solid var(--border-gold);
}

.obs-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    border-radius: 50%;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.6), 0 0 30px rgba(212, 175, 55, 0.3);
    border: 2px solid var(--gold-dark);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1.1rem;
}

.observacion-item:hover .obs-number {
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.8), 0 0 40px rgba(212, 175, 55, 0.4);
}

.observacion-item p {
    margin: 0;
    flex: 1;
}

/* Audio List Styles */
.audio-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.audio-item {
    background: linear-gradient(135deg, var(--bg-white), var(--bg-cream));
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-brown);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.audio-item:hover {
    border-color: var(--border-gold);
    box-shadow: var(--shadow-xl), 0 0 20px rgba(212, 175, 55, 0.3);
    transform: translateY(-3px);
}

.audio-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-brown);
}

.audio-icon {
    font-size: 1.5rem;
}

.audio-header h4 {
    color: var(--brown-dark);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.audio-player {
    width: 100%;
    height: 50px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border-gold);
}

/* ============================================
   SPOTIFY-STYLE AUDIO PLAYER
   ============================================ */
.spotify-player-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.85), rgba(26, 26, 26, 0.95));
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-gold);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.6), 0 0 60px rgba(212, 175, 55, 0.3);
    overflow: hidden;
    backdrop-filter: blur(20px);
}

.spotify-player {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(26, 26, 26, 0.6));
}

/* Player Header */
.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid rgba(212, 175, 55, 0.2);
}

.player-track-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.player-cover {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.5);
    border: 2px solid var(--border-gold);
}

.player-cover-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px rgba(0, 0, 0, 0.5));
}

.player-track-details {
    flex: 1;
}

.player-track-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gold-light);
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.5);
    font-family: var(--font-elegant);
}

.player-track-artist {
    font-size: 1rem;
    color: #d0d0d0;
    font-weight: var(--font-weight-medium);
}

.player-duration {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: #e0e0e0;
    font-size: 0.95rem;
    font-weight: var(--font-weight-medium);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.separator {
    color: #999;
}

/* Player Controls */
.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.2);
    border: 2px solid var(--border-gold);
    color: var(--gold-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.control-btn:hover {
    background: rgba(212, 175, 55, 0.4);
    transform: scale(1.1);
    box-shadow: 0 0 25px rgba(212, 175, 55, 0.6);
}

.control-btn:active {
    transform: scale(0.95);
}

.control-btn svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.play-pause-btn {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    border: 3px solid var(--gold-dark);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.7);
}

.play-pause-btn:hover {
    background: linear-gradient(135deg, var(--gold-light), #f4c430);
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.9);
    transform: scale(1.15);
}

.play-pause-btn svg {
    width: 32px;
    height: 32px;
}

/* Progress Bar */
.player-progress {
    margin-bottom: var(--spacing-lg);
}

.progress-bar {
    position: relative;
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    cursor: pointer;
    overflow: visible;
    transition: height 0.3s ease;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.progress-bar.dragging {
    height: 12px;
    cursor: grabbing;
}

.progress-filled {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--gold-light), var(--gold-dark));
    border-radius: var(--radius-full);
    transition: width 0.1s linear;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.6);
}

.progress-bar.dragging .progress-filled {
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.9);
    transition: width 0s;
}

.progress-thumb {
    position: absolute;
    top: 50%;
    left: 0%;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--gold-light), #f4c430);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(1);
    cursor: grab;
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.8), 0 2px 8px rgba(0, 0, 0, 0.3), inset 0 2px 4px rgba(255, 255, 255, 0.3);
    border: 3px solid var(--gold-dark);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    pointer-events: auto;
}

.progress-thumb:active {
    cursor: grabbing;
}

.progress-thumb:hover {
    transform: translate(-50%, -50%) scale(1.3);
    box-shadow: 0 0 25px rgba(212, 175, 55, 1), 0 0 40px rgba(212, 175, 55, 0.6), 0 4px 12px rgba(0, 0, 0, 0.4);
    border-color: var(--gold-light);
}

.progress-thumb.active {
    transform: translate(-50%, -50%) scale(1.5);
    cursor: grabbing;
    box-shadow: 0 0 30px rgba(212, 175, 55, 1), 0 0 50px rgba(212, 175, 55, 0.8), 0 6px 16px rgba(0, 0, 0, 0.5);
    border-width: 4px;
    background: linear-gradient(135deg, #f4c430, var(--gold-light));
    animation: thumb-pulse 0.6s ease-in-out infinite;
}

@keyframes thumb-pulse {
    0%, 100% {
        box-shadow: 0 0 30px rgba(212, 175, 55, 1), 0 0 50px rgba(212, 175, 55, 0.8), 0 6px 16px rgba(0, 0, 0, 0.5);
    }
    50% {
        box-shadow: 0 0 40px rgba(212, 175, 55, 1), 0 0 70px rgba(212, 175, 55, 1), 0 8px 20px rgba(0, 0, 0, 0.6);
    }
}

.progress-bar:hover .progress-thumb {
    transform: translate(-50%, -50%) scale(1.25);
}

.progress-bar:hover {
    height: 10px;
}

/* Volume Control */
.player-volume {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.volume-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid rgba(212, 175, 55, 0.3);
    color: var(--gold-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.volume-btn:hover {
    background: rgba(212, 175, 55, 0.3);
    transform: scale(1.1);
}

.volume-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.volume-slider-wrapper {
    flex: 1;
}

.volume-slider {
    position: relative;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    cursor: pointer;
    overflow: visible;
    transition: height 0.3s ease;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.volume-slider.dragging {
    height: 10px;
    cursor: grabbing;
}

.volume-filled {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--gold-light), var(--gold-dark));
    border-radius: var(--radius-full);
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
    transition: box-shadow 0.3s ease;
}

.volume-slider.dragging .volume-filled {
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.8);
}

.volume-thumb {
    position: absolute;
    top: 50%;
    right: 0;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, var(--gold-light), #f4c430);
    border-radius: 50%;
    transform: translate(50%, -50%) scale(1);
    cursor: grab;
    box-shadow: 0 0 12px rgba(212, 175, 55, 0.8), 0 2px 6px rgba(0, 0, 0, 0.3), inset 0 2px 4px rgba(255, 255, 255, 0.3);
    border: 3px solid var(--gold-dark);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    pointer-events: auto;
}

.volume-thumb:active {
    cursor: grabbing;
}

.volume-thumb:hover {
    transform: translate(50%, -50%) scale(1.3);
    box-shadow: 0 0 20px rgba(212, 175, 55, 1), 0 0 35px rgba(212, 175, 55, 0.6), 0 4px 10px rgba(0, 0, 0, 0.4);
    border-color: var(--gold-light);
}

.volume-thumb.active {
    transform: translate(50%, -50%) scale(1.5);
    cursor: grabbing;
    box-shadow: 0 0 25px rgba(212, 175, 55, 1), 0 0 45px rgba(212, 175, 55, 0.8), 0 5px 14px rgba(0, 0, 0, 0.5);
    border-width: 4px;
    background: linear-gradient(135deg, #f4c430, var(--gold-light));
    animation: volume-thumb-pulse 0.6s ease-in-out infinite;
}

@keyframes volume-thumb-pulse {
    0%, 100% {
        box-shadow: 0 0 25px rgba(212, 175, 55, 1), 0 0 45px rgba(212, 175, 55, 0.8), 0 5px 14px rgba(0, 0, 0, 0.5);
    }
    50% {
        box-shadow: 0 0 35px rgba(212, 175, 55, 1), 0 0 65px rgba(212, 175, 55, 1), 0 7px 18px rgba(0, 0, 0, 0.6);
    }
}

.volume-slider:hover .volume-thumb {
    transform: translate(50%, -50%) scale(1.25);
}

.volume-slider:hover {
    height: 8px;
}

.volume-thumb:active {
    cursor: grabbing;
}

.volume-percentage {
    min-width: 45px;
    text-align: right;
    color: #d0d0d0;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
}

/* Playlist */
.player-playlist {
    background: rgba(0, 0, 0, 0.4);
    border-top: 2px solid rgba(212, 175, 55, 0.2);
    padding: var(--spacing-lg);
}

.playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.playlist-title {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    color: var(--gold-light);
    margin: 0;
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.5);
}

.playlist-count {
    color: #b0b0b0;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
}

.playlist-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-height: 400px;
    overflow-y: auto;
    padding-right: var(--spacing-xs);
}

.playlist-items::-webkit-scrollbar {
    width: 8px;
}

.playlist-items::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-full);
}

.playlist-items::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    border-radius: var(--radius-full);
}

.playlist-items::-webkit-scrollbar-thumb:hover {
    background: var(--gold-light);
}

.playlist-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(212, 175, 55, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.1);
    cursor: pointer;
    transition: all 0.3s ease;
}

.playlist-item:hover {
    background: rgba(212, 175, 55, 0.15);
    border-color: rgba(212, 175, 55, 0.4);
    transform: translateX(5px);
}

.playlist-item.playing {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--border-gold);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.3);
}

.playlist-item-number {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 175, 55, 0.2);
    border-radius: 50%;
    color: var(--gold-light);
    font-weight: var(--font-weight-bold);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.playlist-item.playing .playlist-item-number {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    color: var(--text-dark);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.6);
}

.playlist-item-info {
    flex: 1;
    min-width: 0;
}

.playlist-item-title {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: #e0e0e0;
    margin: 0 0 var(--spacing-xs) 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.playlist-item.playing .playlist-item-title {
    color: var(--gold-light);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.playlist-item-duration {
    font-size: 0.85rem;
    color: #b0b0b0;
    font-weight: var(--font-weight-medium);
}

.playlist-item-icon {
    font-size: 1.2rem;
    opacity: 0.7;
}

.playlist-item.playing .playlist-item-icon {
    opacity: 1;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* Video List Styles */
.video-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.video-item {
    background: linear-gradient(135deg, var(--bg-white), var(--bg-cream));
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-brown);
    box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.video-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    transition: left 0.6s;
}

.video-item:hover::before {
    left: 100%;
}

.video-item:hover {
    border-color: var(--border-gold);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(212, 175, 55, 0.5), 0 0 70px rgba(212, 175, 55, 0.3);
    transform: translateY(-8px) scale(1.01);
    background: linear-gradient(135deg, #ffffff, #f9f7f2);
}

.video-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-gold);
}

.video-icon {
    font-size: 1.5rem;
}

.video-header h4 {
    color: var(--brown-dark);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 3px solid var(--border-gold);
    box-shadow: var(--shadow-lg), 0 0 25px rgba(212, 175, 55, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.video-item:hover .video-wrapper {
    border-color: var(--gold-light);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(212, 175, 55, 0.6), 0 0 80px rgba(212, 175, 55, 0.3);
    transform: scale(1.02);
}

.youtube-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Pro Section */
.pro-section {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--brown-dark) 0%, var(--black) 100%);
    color: var(--text-white);
    position: relative;
    overflow: hidden;
}

.pro-badge-text {
    display: inline-block;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.3), rgba(184, 148, 30, 0.2));
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    border: 2px solid var(--border-gold);
    box-shadow: 0 0 25px rgba(212, 175, 55, 0.7), 0 0 50px rgba(212, 175, 55, 0.3);
    animation: glow-intense 3s ease-in-out infinite;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.8);
}

.pro-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    opacity: 0.15;
    pointer-events: none;
    font-size: 4rem;
}

.pro-star, .pro-note {
    animation: float 4s ease-in-out infinite;
}

.pro-star:nth-child(odd) {
    animation-delay: 0s;
}

.pro-star:nth-child(even) {
    animation-delay: 2s;
}

.pro-note:nth-child(odd) {
    animation-delay: 1s;
}

.pro-note:nth-child(even) {
    animation-delay: 3s;
}

.pro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.pro-title {
    font-size: 2.8rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #d4af37 0%, #f4c430 50%, #d4af37 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.8);
    animation: shimmer 4s linear infinite;
    font-family: var(--font-elegant);
}

.pro-description {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    color: var(--bg-cream);
    opacity: 0.95;
    line-height: 1.8;
}

.check-star {
    font-size: 1.2rem;
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.8));
    animation: twinkle 2s ease-in-out infinite;
}

.pro-visual {
    position: relative;
    z-index: 1;
}

.pro-icon-notes {
    font-size: 2rem;
    opacity: 0.8;
}

.pro-highlight {
    color: var(--text-gold);
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.8);
}

.pro-stars {
    font-size: 1.5rem;
    animation: twinkle 3s ease-in-out infinite;
}

.pro-features-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.pro-features-list li {
    padding: var(--spacing-xs) 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.pro-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.pro-card {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 148, 30, 0.15));
    backdrop-filter: blur(15px);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    border: 3px solid var(--border-gold);
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.6), 0 0 80px rgba(212, 175, 55, 0.3);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.pro-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.3) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.pro-card:hover::before {
    opacity: 1;
}

.pro-card:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 0 60px rgba(212, 175, 55, 0.8), 0 0 120px rgba(212, 175, 55, 0.4);
    border-color: var(--gold-light);
}

.pro-icon {
    font-size: 5rem;
    filter: drop-shadow(0 0 15px rgba(212, 175, 55, 0.8));
    animation: twinkle 2s ease-in-out infinite;
}

.pro-highlight {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-gold);
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.8);
}

.pro-buttons {
    display: flex;
    gap: var(--spacing-md);
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-cream), var(--bg-light));
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.testimonial-card {
    background: linear-gradient(135deg, var(--bg-white), var(--bg-cream));
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.1);
    border: 2px solid var(--border-brown);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 15px;
    font-size: 6rem;
    color: rgba(212, 175, 55, 0.1);
    font-family: var(--font-elegant);
    line-height: 1;
    opacity: 0.3;
}

.testimonial-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-xl), 0 0 35px rgba(212, 175, 55, 0.4), 0 0 60px rgba(212, 175, 55, 0.2);
    background: linear-gradient(135deg, #ffffff, #f9f7f2);
}

.testimonial-stars {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--gold-dark);
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.7));
    animation: twinkle 3s ease-in-out infinite;
    display: inline-block;
}

.author-icon {
    font-size: 1.5rem;
}

.testimonial-text {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-name {
    font-weight: var(--font-weight-semibold);
    color: var(--brown-dark);
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--black) 0%, var(--black-soft) 100%);
    color: var(--text-white);
    text-align: center;
    position: relative;
}

.cta-stars {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.8);
    animation: twinkle 3s ease-in-out infinite;
}

.cta-title {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #d4af37 0%, #f4c430 50%, #d4af37 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.8);
    animation: shimmer 4s linear infinite;
    font-family: var(--font-elegant);
}

.cta-description {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--bg-cream);
    opacity: 0.95;
}

.cta-notes {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
    animation: float 4s ease-in-out infinite;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--black), var(--brown-dark));
    color: var(--text-white);
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    border-top: 3px solid var(--border-gold);
}

.footer-logo {
    color: var(--text-gold);
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.7);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-weight-bold);
}

.footer-title {
    color: var(--text-gold);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
    font-size: 1.3rem;
}

.footer-notes {
    margin-top: var(--spacing-sm);
    font-size: 1.5rem;
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.6));
    animation: twinkle 4s ease-in-out infinite;
}

.footer-stars {
    margin: var(--spacing-md) 0;
    font-size: 1.5rem;
    filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.6));
    animation: twinkle 3s ease-in-out infinite;
}

.footer-decor {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 8px rgba(212, 175, 55, 0.5));
    animation: float-gentle 5s ease-in-out infinite;
    text-align: center;
}

.btn-footer {
    background: rgba(212, 175, 55, 0.2);
    color: var(--text-gold);
    border: 1px solid rgba(212, 175, 55, 0.5);
}

.btn-footer:hover {
    background: rgba(212, 175, 55, 0.3);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.5);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-top: var(--spacing-sm);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
}

.footer-links a::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold-light);
    transition: width 0.3s ease;
    box-shadow: 0 0 5px rgba(212, 175, 55, 0.8);
}

.footer-links a:hover {
    color: var(--text-gold);
    text-shadow: 0 0 8px rgba(212, 175, 55, 0.6);
}

.footer-links a:hover::before {
    width: 100%;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        display: none;
    }

    .pro-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .pro-visual {
        order: -1;
    }

    .step-item {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        min-width: auto;
    }
}

@media (max-width: 768px) {
    /* Ensure no horizontal scroll */
    * {
        max-width: 100%;
    }
    
    /* Navigation Mobile */
    .nav-wrapper {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        padding: 0;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .logo-icon {
        font-size: 1.5rem;
    }
    
    .nav-center {
        order: 2;
        margin-left: auto;
        margin-right: var(--spacing-sm);
    }
    
    .language-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
    }
    
    .lang-code {
        display: none;
    }
    
    .language-dropdown {
        right: 0;
        min-width: 160px;
    }
    
    .menu-toggle {
        display: flex;
        order: 3;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--black), var(--brown-dark));
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateX(100%);
        transition: var(--transition-normal);
        border-top: 2px solid var(--border-gold);
        z-index: 1000;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .title-main {
        font-size: 2.5rem;
    }

    .title-sub {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0;
    }
    
    .feature-card,
    .testimonial-card {
        width: 100%;
        max-width: 100%;
        padding: var(--spacing-md);
        box-sizing: border-box;
    }
    
    .how-it-works,
    .features,
    .testimonials,
    .pro-section,
    .cta-section,
    .tutorial-section {
        padding: var(--spacing-xl) var(--spacing-sm);
        overflow-x: hidden;
    }
    
    .section-header {
        padding: 0 var(--spacing-sm);
    }

    .hero-stats {
        justify-content: center;
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }
    
    .stat-item {
        width: 100%;
        max-width: 200px;
    }
    
    .hero-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        padding: 0;
    }
    
    .hero-text {
        width: 100%;
        padding: 0;
    }
    
    .hero-visual {
        width: 100%;
        display: flex;
        justify-content: center;
        padding: 0;
    }
    
    .phone-mockup {
        width: 100%;
        max-width: 280px;
        height: auto;
        aspect-ratio: 9/16;
        margin: 0 auto;
    }
    
    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
        overflow-x: hidden;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .tutorial-tabs {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .tab-btn {
        width: 100%;
        justify-content: center;
    }

    .part-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .part-title-wrapper {
        width: 100%;
    }

    /* Tutorial Navigation Buttons Responsive */
    .tutorial-nav-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        padding: 0 var(--spacing-sm);
    }

    .tutorial-nav-btn {
        min-height: 220px;
        padding: var(--spacing-lg);
    }

    .nav-btn-icon {
        font-size: 3.5rem;
    }

    .nav-btn-title {
        font-size: 1.6rem;
    }

    .nav-btn-subtitle {
        font-size: 1rem;
    }

    /* Spotify Player Responsive */
    .spotify-player {
        padding: var(--spacing-md);
    }

    .player-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .player-track-info {
        width: 100%;
    }

    .player-duration {
        width: 100%;
        justify-content: flex-end;
    }

    .player-controls {
        gap: var(--spacing-sm);
    }

    .control-btn {
        width: 45px;
        height: 45px;
    }

    .play-pause-btn {
        width: 60px;
        height: 60px;
    }

    .play-pause-btn svg {
        width: 28px;
        height: 28px;
    }

    .player-volume {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .volume-slider-wrapper {
        order: 3;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    .title-main {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    /* Tutorial Navigation Buttons - Small Mobile */
    .tutorial-nav-btn {
        min-height: 200px;
        padding: var(--spacing-md);
    }

    .nav-btn-icon {
        font-size: 3rem;
    }

    .nav-btn-title {
        font-size: 1.4rem;
    }

    .nav-btn-subtitle {
        font-size: 0.9rem;
    }

    /* Spotify Player - Small Mobile */
    .player-track-title {
        font-size: 1.2rem;
    }

    .player-track-artist {
        font-size: 0.9rem;
    }

    .player-cover {
        width: 60px;
        height: 60px;
    }

    .player-cover-icon {
        font-size: 2rem;
    }

    .control-btn {
        width: 40px;
        height: 40px;
    }

    .control-btn svg {
        width: 20px;
        height: 20px;
    }

    .play-pause-btn {
        width: 55px;
        height: 55px;
    }

    .play-pause-btn svg {
        width: 24px;
        height: 24px;
    }

    .playlist-title {
        font-size: 1.1rem;
    }

    .playlist-item {
        padding: var(--spacing-sm);
    }

    .playlist-item-title {
        font-size: 0.9rem;
    }
}