:root {
    --neon-turquoise: #00f3ff;
    --neon-blue: #0066ff;
    --neon-purple: #9d00ff;
    --neon-pink: #ff00ff;
    --neon-green: #00ff9d;
    --bg-dark: #0a0a15;
    --card-dark: rgba(20, 20, 40, 0.7);
    --text-dark: #ffffff;
    --text-secondary-dark: #b0b0d0;
    
    --neon-turquoise-light: #0099aa;
    --neon-blue-light: #0044cc;
    --neon-purple-light: #6600cc;
    --neon-pink-light: #cc00cc;
    --neon-green-light: #00aa77;
    --bg-light: #f0f0ff;
    --card-light: rgba(255, 255, 255, 0.85);
    --text-light: #1a1a2e;
    --text-secondary-light: #444466;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-dark);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

body.light-mode {
    background-color: var(--bg-light);
    color: var(--text-light);
}

.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    opacity: 0.7;
}

.bg-dot {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, var(--neon-purple), transparent);
    animation: float 15s infinite linear;
}

.bg-line {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-turquoise), transparent);
    animation: wave 20s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); opacity: 0.3; }
    50% { opacity: 0.7; }
    100% { transform: translateY(-100vh) rotate(360deg); opacity: 0.3; }
}

@keyframes wave {
    0% { transform: translateX(-100%) skewX(0deg); }
    100% { transform: translateX(100vw) skewX(10deg); }
}

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    flex-direction: column;
}

.light-mode #loading-screen {
    background-color: var(--bg-light);
}

.loading-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 5px solid transparent;
    border-top-color: var(--neon-turquoise);
    animation: spin 1s linear infinite;
    position: relative;
    box-shadow: 0 0 20px var(--neon-turquoise);
}

.loading-circle::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    border: 5px solid transparent;
    border-top-color: var(--neon-pink);
    animation: spin 1.5s linear infinite reverse;
}

.loading-text {
    margin-top: 30px;
    font-size: 1.5rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--neon-turquoise);
    text-shadow: 0 0 10px var(--neon-turquoise);
    animation: pulse 2s infinite;
}

.light-mode .loading-text {
    color: var(--neon-turquoise-light);
    text-shadow: 0 0 10px var(--neon-turquoise-light);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    backdrop-filter: blur(10px);
    background-color: rgba(10, 10, 25, 0.7);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0, 243, 255, 0.2);
}

.light-mode header {
    background-color: rgba(240, 240, 255, 0.8);
    border-bottom: 1px solid rgba(0, 153, 170, 0.3);
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-text {
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(90deg, var(--neon-turquoise), var(--neon-blue), var(--neon-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 15px rgba(0, 243, 255, 0.5);
    letter-spacing: 1px;
}

.light-mode .logo-text {
    background: linear-gradient(90deg, var(--neon-turquoise-light), var(--neon-blue-light), var(--neon-purple-light));
    -webkit-background-clip: text;
    background-clip: text;
}

.logo-icon {
    font-size: 2.2rem;
    color: var(--neon-turquoise);
    filter: drop-shadow(0 0 5px var(--neon-turquoise));
}

.light-mode .logo-icon {
    color: var(--neon-turquoise-light);
    filter: drop-shadow(0 0 5px var(--neon-turquoise-light));
}

nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

nav a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s;
}

.light-mode nav a {
    color: var(--text-light);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--neon-turquoise), var(--neon-pink));
    transition: width 0.3s;
}

nav a:hover {
    color: var(--neon-turquoise);
}

.light-mode nav a:hover {
    color: var(--neon-turquoise-light);
}

nav a:hover::after {
    width: 100%;
}

.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.8rem;
    color: var(--neon-turquoise);
    filter: drop-shadow(0 0 5px var(--neon-turquoise));
    transition: transform 0.3s;
}

.light-mode .theme-toggle {
    color: var(--neon-turquoise-light);
    filter: drop-shadow(0 0 5px var(--neon-turquoise-light));
}

.theme-toggle:hover {
    transform: rotate(30deg);
}

.fa-moon, .fa-sun {
    display: none;
}

.dark-mode .fa-moon {
    display: inline-block;
}

.light-mode .fa-sun {
    display: inline-block;
}

.hero {
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--neon-turquoise), var(--neon-blue), var(--neon-purple), var(--neon-pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
    line-height: 1.2;
    max-width: 900px;
}

.light-mode .hero-title {
    background: linear-gradient(90deg, var(--neon-turquoise-light), var(--neon-blue-light), var(--neon-purple-light), var(--neon-pink-light));
    -webkit-background-clip: text;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    max-width: 700px;
    margin-bottom: 3rem;
    color: var(--text-secondary-dark);
    line-height: 1.6;
}

.light-mode .hero-subtitle {
    color: var(--text-secondary-light);
}

.hero-buttons {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    color: white;
    box-shadow: 0 0 20px rgba(0, 102, 255, 0.5);
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 30px rgba(0, 102, 255, 0.8);
}

.btn-secondary {
    background: transparent;
    color: var(--neon-turquoise);
    border: 2px solid var(--neon-turquoise);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
}

.light-mode .btn-secondary {
    color: var(--neon-turquoise-light);
    border-color: var(--neon-turquoise-light);
}

.btn-secondary:hover {
    background-color: rgba(0, 243, 255, 0.1);
    transform: translateY(-5px);
    box-shadow: 0 0 25px rgba(0, 243, 255, 0.5);
}

.music-section {
    padding: 5rem 2rem;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 1rem;
    color: var(--neon-green);
    text-shadow: 0 0 15px rgba(0, 255, 157, 0.5);
}

.light-mode .section-title {
    color: var(--neon-green-light);
    text-shadow: 0 0 15px rgba(0, 170, 119, 0.5);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 4rem;
    color: var(--text-secondary-dark);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.light-mode .section-subtitle {
    color: var(--text-secondary-light);
}

.music-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    max-width: 1300px;
    margin: 0 auto;
}

.music-card {
    background: var(--card-dark);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(0, 243, 255, 0.2);
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.light-mode .music-card {
    background: var(--card-light);
    border: 1px solid rgba(0, 153, 170, 0.2);
}

.music-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.05), rgba(157, 0, 255, 0.05));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s;
}

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

.music-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 243, 255, 0.2);
    border-color: var(--neon-turquoise);
}

.music-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--neon-pink);
    filter: drop-shadow(0 0 8px var(--neon-pink));
}

.light-mode .music-icon {
    color: var(--neon-pink-light);
    filter: drop-shadow(0 0 8px var(--neon-pink-light));
}

.music-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--neon-turquoise);
}

.light-mode .music-card h3 {
    color: var(--neon-turquoise-light);
}

.music-card p {
    color: var(--text-secondary-dark);
    line-height: 1.6;
}

.light-mode .music-card p {
    color: var(--text-secondary-light);
}

.commands-section {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, rgba(157, 0, 255, 0.05), rgba(0, 255, 157, 0.05));
}

.light-mode .commands-section {
    background: linear-gradient(135deg, rgba(157, 0, 255, 0.02), rgba(0, 170, 119, 0.02));
}

.commands-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.command-card {
    background: var(--card-dark);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.5rem;
    border: 1px solid rgba(0, 102, 255, 0.2);
    transition: all 0.3s;
}

.light-mode .command-card {
    background: var(--card-light);
    border: 1px solid rgba(0, 102, 255, 0.1);
}

.command-card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-blue);
    box-shadow: 0 10px 20px rgba(0, 102, 255, 0.2);
}

.command-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--neon-blue);
    margin-bottom: 0.5rem;
}

.light-mode .command-name {
    color: var(--neon-blue-light);
}

.command-desc {
    color: var(--text-secondary-dark);
    font-size: 0.95rem;
    line-height: 1.5;
}

.light-mode .command-desc {
    color: var(--text-secondary-light);
}

.stats-section {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(157, 0, 255, 0.1));
}

.light-mode .stats-section {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05), rgba(157, 0, 255, 0.05));
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-box {
    text-align: center;
    padding: 2rem;
    border-radius: 20px;
    background: var(--card-dark);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 255, 157, 0.2);
    transition: transform 0.3s;
}

.light-mode .stat-box {
    background: var(--card-light);
    border: 1px solid rgba(0, 170, 119, 0.2);
}

.stat-box:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--neon-green);
    text-shadow: 0 0 10px rgba(0, 255, 157, 0.5);
    margin-bottom: 0.5rem;
}

.light-mode .stat-number {
    color: var(--neon-green-light);
    text-shadow: 0 0 10px rgba(0, 170, 119, 0.5);
}

.stat-label {
    font-size: 1.2rem;
    color: var(--text-secondary-dark);
}

.light-mode .stat-label {
    color: var(--text-secondary-light);
}

.api-info {
    color: var(--neon-green);
    font-size: 0.8rem;
    margin-top: 5px;
}

.api-error {
    color: #ff5555;
    font-size: 0.8rem;
    margin-top: 5px;
}

.testimonials-section {
    padding: 5rem 2rem;
}

.testimonial-box {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 3rem;
    border-radius: 20px;
    background: var(--card-dark);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 0, 255, 0.2);
    position: relative;
}

.light-mode .testimonial-box {
    background: var(--card-light);
    border: 1px solid rgba(204, 0, 204, 0.2);
}

.testimonial-box::before, .testimonial-box::after {
    content: '"';
    position: absolute;
    font-size: 8rem;
    color: var(--neon-pink);
    opacity: 0.3;
    font-family: serif;
}

.light-mode .testimonial-box::before, .light-mode .testimonial-box::after {
    color: var(--neon-pink-light);
}

.testimonial-box::before {
    top: -20px;
    left: 30px;
}

.testimonial-box::after {
    bottom: -50px;
    right: 30px;
}

.testimonial-text {
    font-size: 1.4rem;
    font-style: italic;
    margin-bottom: 2rem;
    line-height: 1.6;
    color: var(--text-dark);
}

.light-mode .testimonial-text {
    color: var(--text-light);
}

.testimonial-author {
    font-weight: 700;
    color: var(--neon-turquoise);
    font-size: 1.2rem;
}

.light-mode .testimonial-author {
    color: var(--neon-turquoise-light);
}

.testimonial-note {
    margin-top: 2rem;
    color: var(--text-secondary-dark);
    font-size: 0.9rem;
}

.light-mode .testimonial-note {
    color: var(--text-secondary-light);
}

footer {
    padding: 3rem 2rem 1.5rem;
    background-color: rgba(10, 10, 30, 0.9);
    border-top: 1px solid rgba(0, 243, 255, 0.2);
}

.light-mode footer {
    background-color: rgba(230, 230, 255, 0.9);
    border-top: 1px solid rgba(0, 153, 170, 0.2);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 2.2rem;
    font-weight: 900;
    background: linear-gradient(90deg, var(--neon-turquoise), var(--neon-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}

.light-mode .footer-logo {
    background: linear-gradient(90deg, var(--neon-turquoise-light), var(--neon-purple-light));
    -webkit-background-clip: text;
    background-clip: text;
}

.footer-description {
    color: var(--text-secondary-dark);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.light-mode .footer-description {
    color: var(--text-secondary-light);
}

.footer-links h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--neon-turquoise);
    position: relative;
    display: inline-block;
}

.light-mode .footer-links h3 {
    color: var(--neon-turquoise-light);
}

.footer-links h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50%;
    height: 2px;
    background: linear-gradient(90deg, var(--neon-turquoise), transparent);
}

.light-mode .footer-links h3::after {
    background: linear-gradient(90deg, var(--neon-turquoise-light), transparent);
}

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

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--text-secondary-dark);
    text-decoration: none;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.light-mode .footer-links a {
    color: var(--text-secondary-light);
}

.footer-links a:hover {
    color: var(--neon-turquoise);
}

.light-mode .footer-links a:hover {
    color: var(--neon-turquoise-light);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary-dark);
    font-size: 0.9rem;
}

.light-mode .copyright {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-secondary-light);
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .music-features {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem 1.5rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
        max-width: 300px;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .music-features {
        grid-template-columns: 1fr;
    }
    
    .commands-container {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .testimonial-box {
        padding: 2rem 1rem;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s, transform 0.8s;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}