/* ==================== ROOT VARIABLES ==================== */
:root {
    --primary: #ff0080;
    --primary-dark: #cc0066;
    --secondary: #00d4ff;
    --dark: #0a0a0a;
    --dark-light: #1a1a1a;
    --dark-lighter: #2a2a2a;
    --text: #ffffff;
    --text-muted: #b3b3b3;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== BACKGROUND ANIMATION ==================== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.wave {
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: wave 20s infinite linear;
}

.wave1 {
    animation-duration: 25s;
    opacity: 0.3;
}

.wave2 {
    animation-duration: 35s;
    opacity: 0.2;
}

.wave3 {
    animation-duration: 45s;
    opacity: 0.1;
}

@keyframes wave {
    0% {
        transform: rotate(0deg) translate(-50%, -50%);
    }
    100% {
        transform: rotate(360deg) translate(-50%, -50%);
    }
}

/* ==================== NAVBAR ==================== */
.navbar {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-brand i {
    font-size: 28px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 24px;
    cursor: pointer;
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 50px;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 60px;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s;
}

.subtitle {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 30px;
    animation: fadeInUp 1s 0.2s both;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-top: 40px;
    animation: fadeInUp 1s 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.stat i {
    font-size: 32px;
    color: var(--primary);
}

.stat span {
    font-size: 14px;
    color: var(--text-muted);
}

/* ==================== RADIO PLAYER CARD ==================== */
.radio-player-card {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    animation: fadeInRight 1s;
}

.player-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 0, 128, 0.15) 0%, transparent 70%);
    animation: rotate 20s infinite linear;
}

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

/* ==================== ALBUM ART / VISUALIZER ==================== */
.album-art {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vinyl-record {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, #1a1a1a 0%, #000 100%);
    border-radius: 50%;
    position: relative;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
}

.vinyl-record.rotating {
    animation: spin 4s linear infinite;
}

.vinyl-record.paused {
    animation-play-state: paused;
}

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

.vinyl-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ff0080 0%, #ff8c00 100%);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(255, 0, 128, 0.5);
}

/* Audio Visualizer */
.audio-visualizer {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    align-items: flex-end;
    height: 60px;
}

.bar {
    width: 6px;
    background: linear-gradient(to top, #ff0080, #00d4ff);
    border-radius: 3px;
    animation: wave-bar 1s ease-in-out infinite;
}

.bar:nth-child(1) {
    animation-delay: 0s;
}

.bar:nth-child(2) {
    animation-delay: 0.1s;
}

.bar:nth-child(3) {
    animation-delay: 0.2s;
}

.bar:nth-child(4) {
    animation-delay: 0.3s;
}

.bar:nth-child(5) {
    animation-delay: 0.4s;
}

@keyframes wave-bar {
    0%, 100% {
        height: 20px;
    }
    50% {
        height: 60px;
    }
}

/* ==================== SONG INFO ==================== */
.song-info {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.now-playing {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 0, 128, 0.2);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.song-title {
    font-size: 28px;
    margin-bottom: 10px;
    font-weight: 700;
}

.song-artist {
    color: var(--text-muted);
    font-size: 16px;
}

/* ==================== PLAYER CONTROLS ==================== */
.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.control-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: var(--text);
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.play-btn {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    font-size: 24px;
    box-shadow: 0 10px 30px rgba(255, 0, 128, 0.4);
}

.play-btn:hover {
    box-shadow: 0 15px 40px rgba(255, 0, 128, 0.6);
}

.play-btn.playing i::before {
    content: '\f04c';
}

/* ==================== VOLUME CONTROL ==================== */
.volume-control {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.volume-control i {
    color: var(--text-muted);
}

.volume-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(255, 0, 128, 0.5);
}

.volume-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(255, 0, 128, 0.5);
    border: none;
}

/* ==================== PROGRESS BAR ==================== */
.progress-container {
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 65%;
    animation: progress-pulse 2s infinite;
}

@keyframes progress-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.time-info {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

/* ==================== QUICK ACTIONS ==================== */
.quick-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    position: relative;
    z-index: 1;
}

.action-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
    transform: translateY(-2px);
}

/* ==================== FLOATING CHAT BUTTON ==================== */
.floating-chat-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    font-size: 24px;
    box-shadow: 0 10px 30px rgba(255, 0, 128, 0.4);
    z-index: 999;
    text-decoration: none;
    transition: all 0.3s;
}

.floating-chat-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(255, 0, 128, 0.6);
}

.chat-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--secondary);
    color: var(--dark);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

/* ==================== SECTION STYLES ==================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 48px;
    margin-bottom: 15px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    font-size: 18px;
    color: var(--text-muted);
}

/* ==================== ABOUT SECTION ==================== */
.about-section {
    padding: 100px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 36px;
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-muted);
    line-height: 1.8;
}

.about-cta {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.btn-primary,
.btn-secondary {
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text);
    box-shadow: 0 5px 20px rgba(255, 0, 128, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 0, 128, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(255, 0, 128, 0.1);
}

.image-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.image-card img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.image-card:hover .image-overlay {
    opacity: 1;
}

.image-overlay i {
    font-size: 64px;
    color: var(--text);
}

/* ==================== FEATURES SECTION ==================== */
.features-section {
    padding: 100px 0;
    background: rgba(26, 26, 26, 0.5);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(255, 0, 128, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* ==================== CHAT SECTION ==================== */
.chat-section {
    padding: 100px 0;
}

.chat-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.chat-option {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
    position: relative;
}

.chat-option.featured {
    border-color: var(--primary);
    box-shadow: 0 0 40px rgba(255, 0, 128, 0.3);
}

.featured-badge {
    position: absolute;
    top: -15px;
    right: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.chat-option:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.chat-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 40px;
}

.chat-option h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.chat-option p {
    color: var(--text-muted);
    margin-bottom: 25px;
    line-height: 1.6;
}

.pulse-btn {
    animation: pulse-button 2s infinite;
}

@keyframes pulse-button {
    0%, 100% {
        box-shadow: 0 5px 20px rgba(255, 0, 128, 0.3);
    }
    50% {
        box-shadow: 0 5px 30px rgba(255, 0, 128, 0.6);
    }
}

/* ==================== FOOTER ==================== */
.footer {
    background: rgba(10, 10, 10, 0.95);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
}

.footer-section p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.contact-info i {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ==================== GLITCH EFFECT ==================== */
.glitch {
    position: relative;
}

.glitch:hover {
    animation: glitch 0.3s;
}

@keyframes glitch {
    0% {
        transform: translate(0);
    }
    20% {
        transform: translate(-2px, 2px);
    }
    40% {
        transform: translate(-2px, -2px);
    }
    60% {
        transform: translate(2px, 2px);
    }
    80% {
        transform: translate(2px, -2px);
    }
    100% {
        transform: translate(0);
    }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .hero-content,
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .features-grid,
    .chat-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-text h1 {
        font-size: 40px;
    }

    .section-header h2 {
        font-size: 36px;
    }

    .features-grid,
    .chat-options {
        grid-template-columns: 1fr;
    }

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

    .hero-stats {
        flex-wrap: wrap;
    }

    .about-cta {
        flex-direction: column;
    }

    .radio-player-card {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 32px;
    }

    .radio-player-card {
        padding: 20px;
    }

    .album-art {
        height: 200px;
    }

    .vinyl-record {
        width: 150px;
        height: 150px;
    }

    .song-title {
        font-size: 20px;
    }

    .floating-chat-btn {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
}

/* ==================== MODAL SYSTEM ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 20px;
    padding: 0;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 20px;
    border-radius: 20px 20px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 24px;
}

.close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close:hover {
    color: #ff0080;
    transform: scale(1.1);
}

.modal-body {
    padding: 30px;
}

.setting-group {
    margin-bottom: 25px;
}

.setting-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #333;
    font-size: 16px;
}

.setting-group input[type="range"] {
    width: 100%;
    margin-bottom: 10px;
}

.setting-group input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.2);
}

.setting-group select {
    width: 100%;
    padding: 10px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 16px;
    background: white;
    transition: all 0.3s ease;
}

.setting-group select:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid #eee;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: #f8f9fa;
    color: #666;
    border: 2px solid #e1e5e9;
}

.btn-secondary:hover {
    background: #e9ecef;
    border-color: #adb5bd;
}

.btn-danger {
    background: linear-gradient(135deg, #ff4757, #ff3742);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 71, 87, 0.3);
}

/* ==================== FAVORITE SYSTEM ==================== */
.favorite-btn.favorited {
    color: #ff0080 !important;
    transform: scale(1.1);
}

.favorite-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #eee;
    transition: all 0.3s ease;
}

.favorite-item:hover {
    background: #f8f9fa;
}

.fav-info {
    flex: 1;
}

.fav-title {
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.fav-artist {
    color: #666;
    font-size: 14px;
    margin-bottom: 3px;
}

.fav-time {
    color: #999;
    font-size: 12px;
}

.remove-fav-btn {
    background: #ff4757;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.remove-fav-btn:hover {
    background: #ff3742;
    transform: scale(1.1);
}

/* ==================== NOTIFICATION SYSTEM ==================== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    animation: slideInRight 0.3s ease;
    max-width: 350px;
}

.notification-success {
    border-left: 4px solid #10b981;
}

.notification-info {
    border-left: 4px solid #3b82f6;
}

.notification-warning {
    border-left: 4px solid #f59e0b;
}

.notification-error {
    border-left: 4px solid #ef4444;
}

.notification-content {
    display: flex;
    align-items: center;
    padding: 15px;
}

.notification-message {
    flex: 1;
    color: #333;
    font-weight: 500;
}

.notification-close {
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    padding: 5px;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.notification-close:hover {
    background: #f1f3f4;
    color: #333;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==================== THEME SYSTEM ==================== */
.theme-dark {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
}

.theme-dark .player-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
}

.theme-light {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #333;
}

.theme-light .player-container {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ==================== YOUTUBE DOWNLOAD SYSTEM ==================== */
.youtube-btn {
    background: linear-gradient(135deg, #ff0000, #cc0000) !important;
    color: white !important;
}

.youtube-btn:hover {
    background: linear-gradient(135deg, #cc0000, #990000) !important;
    transform: scale(1.1);
}

.youtube-instructions {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #ff0000;
}

.youtube-instructions h3 {
    color: #ff0000;
    margin-bottom: 15px;
}

.youtube-instructions ol {
    margin: 15px 0;
    padding-left: 20px;
}

.youtube-instructions ul {
    margin: 10px 0;
    padding-left: 20px;
}

.youtube-instructions li {
    margin: 5px 0;
    line-height: 1.6;
}

.youtube-instructions hr {
    margin: 15px 0;
    border: none;
    border-top: 1px solid #ddd;
}

.youtube-instructions p {
    margin: 10px 0;
    line-height: 1.6;
}

.youtube-instructions strong {
    color: #333;
}