/* ============================================
   MUNRAITO — Music Page
   ============================================ */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    --gray-950: #0a0a0a;

    --font-primary: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
}

html {
    scroll-behavior: smooth;
    scrollbar-width: none;
}

html::-webkit-scrollbar {
    display: none;
}

body {
    font-family: var(--font-body);
    background: var(--black);
    color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

/* --- Visualizer Canvas --- */
#visualizer {
    position: fixed;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.4;
}

/* --- Noise --- */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-inner {
    max-width: 100%;
    margin: 0;
    padding: 0 clamp(2rem, 4vw, 4rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
    animation: logoPulse 2s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: lowercase;
    color: var(--gray-400);
    transition: color 0.3s ease;
    cursor: pointer;
}

.nav-link:hover, .nav-link.active {
    color: var(--white);
}

/* --- Music Header --- */
.music-header {
    position: relative;
    z-index: 1;
    padding: 10rem 0 4rem;
}

.music-header-content {
    text-align: center;
}

.music-label {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 1s var(--ease-out-expo) 0.2s forwards;
}

.music-label-line {
    width: 40px;
    height: 1px;
    background: var(--gray-500);
}

.music-label-text {
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.music-title {
    font-family: var(--font-primary);
    font-size: clamp(3.5rem, 12vw, 9rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 0.9;
    margin-bottom: 1.5rem;
}

.music-title-line {
    display: block;
    overflow: hidden;
}

.music-title-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    animation: wordReveal 1.2s var(--ease-out-expo) 0.3s forwards;
}

.music-title-word[data-delay="1"] {
    animation-delay: 0.45s;
}

.music-title-accent {
    color: var(--gray-500);
}

@keyframes wordReveal {
    to { opacity: 1; transform: translateY(0); }
}

.music-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 300;
    color: var(--gray-500);
    opacity: 0;
    animation: fadeInUp 1s var(--ease-out-expo) 0.6s forwards;
}

/* --- Now Playing --- */
.now-playing-section {
    position: relative;
    z-index: 1;
    padding: 2rem 0 5rem;
}

.now-playing {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: center;
    padding: 2.5rem;
    border: 1px solid var(--gray-800);
    border-radius: 20px;
    background: rgba(255,255,255,0.02);
    backdrop-filter: blur(10px);
    opacity: 0;
    animation: fadeInUp 1s var(--ease-out-expo) 0.8s forwards;
}

.now-playing-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

/* --- Vinyl --- */
.vinyl {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        var(--gray-900) 0deg,
        var(--gray-800) 20deg,
        var(--gray-900) 40deg,
        var(--gray-950) 60deg,
        var(--gray-900) 80deg,
        var(--gray-800) 100deg,
        var(--gray-900) 120deg,
        var(--gray-950) 140deg,
        var(--gray-900) 160deg,
        var(--gray-800) 180deg,
        var(--gray-900) 200deg,
        var(--gray-950) 220deg,
        var(--gray-900) 240deg,
        var(--gray-800) 260deg,
        var(--gray-900) 280deg,
        var(--gray-950) 300deg,
        var(--gray-900) 320deg,
        var(--gray-800) 340deg,
        var(--gray-900) 360deg
    );
    position: relative;
    transition: box-shadow 0.5s ease;
}

.vinyl.spinning {
    animation: spin 3s linear infinite;
}

.vinyl-inner {
    position: absolute;
    inset: 25%;
    border-radius: 50%;
    background: var(--gray-950);
    display: flex;
    align-items: center;
    justify-content: center;
}

.vinyl-label {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gray-700);
}

.vinyl-shine {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.vinyl.spinning {
    box-shadow: 0 0 40px rgba(255,255,255,0.06);
}

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

/* --- Equalizer --- */
.equalizer {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 24px;
}

.eq-bar {
    width: 3px;
    height: 4px;
    background: var(--gray-600);
    border-radius: 2px;
    transition: background 0.3s ease;
}

.equalizer.active .eq-bar {
    background: var(--white);
    animation: eqBounce 0.6s ease-in-out infinite alternate;
}

.equalizer.active .eq-bar:nth-child(1) { animation-duration: 0.5s; }
.equalizer.active .eq-bar:nth-child(2) { animation-duration: 0.7s; animation-delay: 0.1s; }
.equalizer.active .eq-bar:nth-child(3) { animation-duration: 0.4s; animation-delay: 0.05s; }
.equalizer.active .eq-bar:nth-child(4) { animation-duration: 0.6s; animation-delay: 0.15s; }
.equalizer.active .eq-bar:nth-child(5) { animation-duration: 0.45s; animation-delay: 0.08s; }

@keyframes eqBounce {
    0% { height: 4px; }
    100% { height: 20px; }
}

/* --- Now Playing Info --- */
.now-playing-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.now-playing-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: var(--gray-500);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.now-playing.is-playing .pulse-dot {
    background: var(--white);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.now-playing-title {
    font-family: var(--font-primary);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    transition: all 0.4s ease;
}

.now-playing-artist {
    font-size: 1rem;
    font-weight: 300;
    color: var(--gray-400);
    margin-bottom: 0.5rem;
    transition: all 0.4s ease;
}

/* --- Player Controls --- */
.player-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.75rem 0;
}

.control-btn {
    width: 44px;
    height: 44px;
    border: 1px solid var(--gray-800);
    border-radius: 50%;
    background: transparent;
    color: var(--gray-400);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s var(--ease-out-expo);
}

.control-btn:hover {
    color: var(--white);
    border-color: var(--gray-500);
    transform: scale(1.05);
}

.play-btn {
    width: 56px;
    height: 56px;
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
}

.play-btn:hover {
    color: var(--black);
    border-color: var(--gray-200);
    background: var(--gray-200);
    transform: scale(1.08);
}

/* --- Progress Bar --- */
.progress-bar {
    width: 100%;
    height: 3px;
    background: var(--gray-800);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    transition: height 0.2s ease;
}

.progress-bar:hover {
    height: 5px;
}

.progress-fill {
    height: 100%;
    background: var(--white);
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    width: 10px;
    height: 10px;
    background: var(--white);
    border-radius: 50%;
    transition: transform 0.2s ease;
}

.progress-bar:hover .progress-fill::after {
    transform: translateY(-50%) scale(1);
}

.progress-time {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--gray-500);
    font-variant-numeric: tabular-nums;
    margin-top: 0.25rem;
}

/* --- Playlist Section --- */
.playlist-section {
    position: relative;
    z-index: 1;
    padding: 4rem 0;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.section-number {
    font-family: var(--font-primary);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-500);
    letter-spacing: 0.05em;
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--gray-700), transparent);
}

/* --- Track List --- */
.playlist {
    display: flex;
    flex-direction: column;
}

.track {
    display: grid;
    grid-template-columns: 40px 1fr auto auto 30px;
    align-items: center;
    gap: 1.5rem;
    padding: 1.1rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 12px;
    position: relative;
}

.track:hover {
    background: rgba(255,255,255,0.03);
}

.track.active {
    background: rgba(255,255,255,0.05);
}

.track-number {
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-600);
    text-align: center;
    transition: color 0.3s ease;
}

.track.active .track-number {
    color: var(--white);
}

.track-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0;
}

.track-title {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.3s ease;
}

.track.active .track-title {
    color: var(--white);
}

.track-artist {
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--gray-500);
}

.track-genre {
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray-600);
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--gray-800);
    border-radius: 100px;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.track:hover .track-genre {
    border-color: var(--gray-600);
    color: var(--gray-400);
}

.track-duration {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--gray-500);
    font-variant-numeric: tabular-nums;
}

/* --- Track Playing Indicator --- */
.track-playing-indicator {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 14px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.track.active .track-playing-indicator {
    opacity: 1;
}

.track-playing-indicator span {
    width: 2px;
    background: var(--white);
    border-radius: 1px;
}

.track.active.is-playing .track-playing-indicator span {
    animation: trackEq 0.5s ease-in-out infinite alternate;
}

.track-playing-indicator span:nth-child(1) { height: 4px; animation-delay: 0s; }
.track-playing-indicator span:nth-child(2) { height: 8px; animation-delay: 0.15s; }
.track-playing-indicator span:nth-child(3) { height: 5px; animation-delay: 0.08s; }

@keyframes trackEq {
    0% { height: 3px; }
    100% { height: 14px; }
}

/* --- Moods Section --- */
.moods-section {
    position: relative;
    z-index: 1;
    padding: 4rem 0 6rem;
}

.moods-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.mood-card {
    padding: 2rem;
    border: 1px solid var(--gray-800);
    border-radius: 16px;
    background: rgba(255,255,255,0.015);
    transition: all 0.4s var(--ease-out-expo);
    cursor: default;
}

.mood-card:hover {
    border-color: var(--gray-600);
    transform: translateY(-4px);
    background: rgba(255,255,255,0.03);
}

.mood-icon {
    color: var(--gray-500);
    margin-bottom: 1.25rem;
    transition: color 0.3s ease;
}

.mood-card:hover .mood-icon {
    color: var(--white);
}

.mood-title {
    font-family: var(--font-primary);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 0.35rem;
}

.mood-desc {
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--gray-500);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.mood-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.mood-tags span {
    font-size: 0.65rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--gray-800);
    border-radius: 100px;
    transition: all 0.3s ease;
}

.mood-card:hover .mood-tags span {
    border-color: var(--gray-600);
}

/* --- Footer --- */
.footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--gray-800);
    padding: 2rem 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.footer-back {
    font-size: 0.8rem;
    color: var(--gray-500);
    transition: color 0.3s ease;
}

.footer-back:hover {
    color: var(--white);
}

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

/* --- Selection --- */
::selection {
    background: var(--white);
    color: var(--black);
}

* {
    -webkit-tap-highlight-color: transparent;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .moods-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .now-playing {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .now-playing-visual {
        justify-self: center;
    }

    .player-controls {
        justify-content: center;
    }

    .now-playing-info {
        align-items: center;
    }

    .track {
        grid-template-columns: 30px 1fr auto 24px;
        gap: 1rem;
        padding: 1rem;
    }

    .track-genre {
        display: none;
    }

    .moods-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .music-header {
        padding: 8rem 0 3rem;
    }

    .vinyl {
        width: 120px;
        height: 120px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}