/* ═══════════════════════════════════════════════════
   SUNO LO-FI & CHILL VOCAL PROMPT GENERATOR — STYLES
   ═══════════════════════════════════════════════════ */

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

:root {
    --bg: #0c0d14;
    --primary: #6366f1;
    --primary-light: #a5b4fc;
    --primary-glow: rgba(99, 102, 241, 0.2);
    --accent: #4f46e5;
    --accent-light: #818cf8;
    --secondary: #7c3aed;
    --secondary-light: #a78bfa;
    --warm: #f472b6;
    --card-bg: rgba(255,255,255,0.02);
    --card-border: rgba(255,255,255,0.05);
    --text: rgba(255,255,255,0.85);
    --text-muted: rgba(255,255,255,0.5);
    --text-dim: rgba(255,255,255,0.25);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: #fff;
    min-height: 100vh;
    line-height: 1.5;
    overflow-x: hidden;
}

.bg-effects { position: fixed; inset: 0; pointer-events: none; z-index: 0; }
.orb { position: absolute; border-radius: 50%; filter: blur(140px); animation: float 12s ease-in-out infinite alternate; }
.orb-1 { width: 30rem; height: 30rem; top: -10rem; left: -8rem; background: rgba(99,102,241,0.12); }
.orb-2 { width: 25rem; height: 25rem; bottom: -8rem; right: -6rem; background: rgba(124,58,237,0.1); animation-delay: 4s; }
.orb-3 { width: 20rem; height: 20rem; top: 40%; left: 50%; background: rgba(244,114,182,0.08); animation-delay: 8s; }

.stars {
    position: absolute; inset: 0;
    background-image: radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.4) 1px, transparent 0),
                      radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.3) 1px, transparent 0),
                      radial-gradient(1px 1px at 50% 30%, rgba(255,255,255,0.25) 1px, transparent 0),
                      radial-gradient(1px 1px at 70% 80%, rgba(255,255,255,0.2) 1px, transparent 0),
                      radial-gradient(1px 1px at 90% 10%, rgba(255,255,255,0.35) 1px, transparent 0);
    background-size: 250px 250px;
    animation: twinkle 5s ease-in-out infinite;
}

@keyframes float { 0% { transform: translate(0,0) scale(1); opacity: 1; } 100% { transform: translate(20px,-15px) scale(1.05); opacity: .7; } }
@keyframes twinkle { 0%,100% { opacity: .6; } 50% { opacity: 1; } }

.container { position: relative; z-index: 10; max-width: 72rem; margin: 0 auto; padding: 2rem 1rem; }
@media (min-width: 640px) { .container { padding: 3rem 1rem; } }

.header { text-align: center; margin-bottom: 2.5rem; }
@media (min-width: 640px) { .header { margin-bottom: 3.5rem; } }

.back-link { display: inline-block; margin-bottom: 1rem; color: var(--text-muted); text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.back-link:hover { color: var(--primary-light); }

.badge { display: inline-flex; align-items: center; gap: .5rem; padding: .375rem 1rem; border-radius: 9999px; background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.15); color: var(--primary-light); font-size: .875rem; margin-bottom: 1.5rem; }
.badge-dot { width: .5rem; height: .5rem; background: var(--warm); border-radius: 50%; animation: blink 2s ease-in-out infinite; }
@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:.3; } }

.title { font-size: 2.25rem; font-weight: 900; letter-spacing: -.03em; margin-bottom: 1rem; line-height: 1.15; }
@media (min-width: 640px) { .title { font-size: 3rem; } }
@media (min-width: 1024px) { .title { font-size: 3.75rem; } }

.title-gradient { background: linear-gradient(135deg, var(--primary-light), var(--secondary-light), var(--warm)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.title-white { color: var(--text); }
.subtitle { color: var(--text-muted); font-size: 1.125rem; max-width: 38rem; margin: 0 auto; }

.section-title { display: flex; align-items: center; gap: .5rem; font-size: .75rem; font-weight: 600; color: rgba(255,255,255,0.35); text-transform: uppercase; letter-spacing: .1em; margin-bottom: 1rem; }
.section { margin-bottom: 2.5rem; }
.card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 1rem; padding: 1.5rem; margin-bottom: 2rem; }

.main-grid { display: grid; gap: 2rem; }
@media (min-width: 1024px) { .main-grid { grid-template-columns: 1fr 1fr; } }
.controls-column { display: flex; flex-direction: column; }
.output-column { display: flex; flex-direction: column; gap: 1.5rem; }
@media (min-width: 1024px) { .output-column { position: sticky; top: 2rem; align-self: start; } }

.presets-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: .75rem; }
@media (min-width: 640px) { .presets-grid { grid-template-columns: repeat(4,1fr); } }

.preset-btn { padding: .75rem 1rem; border-radius: .75rem; border: 1px solid var(--card-border); background: var(--card-bg); text-align: left; cursor: pointer; transition: all .4s; color: #fff; }
.preset-btn:hover { transform: scale(1.02); background: rgba(255,255,255,0.04); }
.preset-btn.active { background: rgba(99,102,241,0.12); border-color: rgba(99,102,241,0.3); box-shadow: 0 0 25px var(--primary-glow); }
.preset-emoji { font-size: 1.25rem; }
.preset-name { font-size: .875rem; font-weight: 600; color: rgba(255,255,255,0.8); margin-top: .25rem; }
.preset-btn.active .preset-name { color: var(--primary-light); }

.vocal-styles-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: .5rem; }
.vocal-style-btn { display: flex; align-items: center; gap: .75rem; padding: .75rem 1rem; border-radius: .75rem; border: 1px solid rgba(255,255,255,0.04); background: rgba(255,255,255,0.015); text-align: left; cursor: pointer; transition: all .3s; color: #fff; }
.vocal-style-btn:hover { background: rgba(255,255,255,0.04); }
.vocal-style-btn.active { background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(124,58,237,0.1)); border-color: rgba(99,102,241,0.25); box-shadow: 0 0 18px var(--primary-glow); }
.vocal-style-emoji { font-size: 1.25rem; flex-shrink: 0; }
.vocal-style-info { min-width: 0; }
.vocal-style-label { font-size: .875rem; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.vocal-style-desc { font-size: .75rem; color: rgba(255,255,255,0.35); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.effects-container { display: flex; flex-wrap: wrap; gap: .5rem; }
.effect-btn { display: inline-flex; align-items: center; gap: .375rem; padding: .5rem .875rem; border-radius: 9999px; border: 1px solid var(--card-border); background: var(--card-bg); font-size: .875rem; font-weight: 500; color: var(--text-muted); cursor: pointer; transition: all .3s; }
.effect-btn:hover { color: rgba(255,255,255,0.65); background: rgba(255,255,255,0.04); }
.effect-btn.active { background: rgba(124,58,237,0.12); border-color: rgba(124,58,237,0.3); color: var(--secondary-light); box-shadow: 0 0 15px rgba(124,58,237,0.15); }
.effect-close { margin-left: .25rem; font-size: .75rem; }

.mix-styles-grid { display: grid; grid-template-columns: 1fr; gap: .5rem; }
@media (min-width: 640px) { .mix-styles-grid { grid-template-columns: repeat(2,1fr); } }
.mix-style-btn { display: flex; align-items: center; gap: .75rem; padding: .75rem 1rem; border-radius: .75rem; border: 1px solid rgba(255,255,255,0.04); background: rgba(255,255,255,0.015); text-align: left; cursor: pointer; transition: all .3s; color: #fff; }
.mix-style-btn:hover { background: rgba(255,255,255,0.04); }
.mix-style-btn.active { background: linear-gradient(135deg, rgba(244,114,182,0.12), rgba(99,102,241,0.08)); border-color: rgba(244,114,182,0.25); }
.mix-style-emoji { font-size: 1.25rem; }
.mix-style-label { font-size: .875rem; font-weight: 600; color: var(--text); }

.energy-bpm-grid { display: grid; gap: 1.5rem; }
@media (min-width: 640px) { .energy-bpm-grid { grid-template-columns: 1fr 1fr; } }
.energy-container { display: flex; flex-wrap: wrap; gap: .5rem; }
.energy-btn { display: flex; align-items: center; gap: .375rem; padding: .5rem .75rem; border-radius: .5rem; border: 1px solid var(--card-border); background: var(--card-bg); font-size: .875rem; font-weight: 500; color: var(--text-muted); cursor: pointer; transition: all .3s; }
.energy-btn:hover { color: rgba(255,255,255,0.65); }
.energy-btn.active { background: rgba(244,114,182,0.12); border-color: rgba(244,114,182,0.3); color: var(--warm); }

.bpm-slider { width: 100%; height: .5rem; background: rgba(255,255,255,0.08); border-radius: 9999px; appearance: none; cursor: pointer; }
.bpm-slider::-webkit-slider-thumb { appearance: none; width: 1.25rem; height: 1.25rem; border-radius: 50%; background: var(--primary-light); box-shadow: 0 0 15px var(--primary-glow); cursor: pointer; }
.bpm-slider::-moz-range-thumb { width: 1.25rem; height: 1.25rem; border-radius: 50%; background: var(--primary-light); border: none; }
.bpm-labels { display: flex; justify-content: space-between; font-size: .75rem; color: var(--text-dim); margin-top: .25rem; }

.extra-section { display: flex; flex-direction: column; gap: 1rem; }
.key-container { display: flex; flex-wrap: wrap; gap: .5rem; }
.key-btn { display: flex; align-items: center; gap: .375rem; padding: .5rem .85rem; border-radius: .5rem; border: 1px solid var(--card-border); background: var(--card-bg); font-size: .875rem; font-weight: 500; color: var(--text-muted); cursor: pointer; transition: all .3s; }
.key-btn:hover { color: rgba(255,255,255,0.65); }
.key-btn.active { background: rgba(99,102,241,0.12); border-color: rgba(99,102,241,0.3); color: var(--primary-light); }
.custom-input { width: 100%; padding: .75rem 1rem; border-radius: .75rem; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06); color: var(--text); font-size: .875rem; outline: none; transition: all .3s; }
.custom-input::placeholder { color: rgba(255,255,255,0.2); }
.custom-input:focus { border-color: rgba(99,102,241,0.4); box-shadow: 0 0 0 3px rgba(99,102,241,0.08); }

.output-card { border-radius: 1rem; padding: 1.5rem; backdrop-filter: blur(10px); }
.output-card-primary { background: linear-gradient(135deg, rgba(99,102,241,0.06), rgba(124,58,237,0.04)); border: 1px solid rgba(99,102,241,0.15); }
.output-card-secondary { background: linear-gradient(135deg, rgba(244,114,182,0.06), rgba(99,102,241,0.04)); border: 1px solid rgba(244,114,182,0.15); }
.output-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.output-title { display: flex; align-items: center; gap: .5rem; font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; }
.output-title-primary { color: var(--primary-light); }
.output-title-secondary { color: var(--warm); }
.copy-btn { padding: .375rem 1rem; border-radius: .5rem; font-size: .875rem; font-weight: 600; cursor: pointer; transition: all .3s; border: 1px solid; }
.copy-btn-primary { background: rgba(99,102,241,0.15); color: var(--primary-light); border-color: rgba(99,102,241,0.2); }
.copy-btn-primary:hover { background: rgba(99,102,241,0.25); }
.copy-btn-secondary { background: rgba(244,114,182,0.15); color: var(--warm); border-color: rgba(244,114,182,0.2); }
.copy-btn-secondary:hover { background: rgba(244,114,182,0.25); }
.copy-btn.copied { background: rgba(34,197,94,0.15) !important; color: #86efac !important; border-color: rgba(34,197,94,0.25) !important; }
.output-content { background: rgba(0,0,0,0.25); border-radius: .75rem; padding: 1rem; border: 1px solid rgba(255,255,255,0.04); }
.output-text { color: rgba(255,255,255,0.75); font-size: .875rem; line-height: 1.6; font-family: 'SF Mono', Monaco, monospace; word-break: break-word; }
.output-hint { font-size: .75rem; color: var(--text-dim); margin-top: .75rem; }

.tips-card { margin-bottom: 0; }
.tips-list { list-style: none; display: flex; flex-direction: column; gap: .75rem; }
.tips-list li { display: flex; align-items: flex-start; gap: .5rem; font-size: .875rem; color: var(--text-muted); }
.tips-list li b { color: rgba(255,255,255,0.65); }
.tip-bullet { color: var(--primary-light); flex-shrink: 0; margin-top: .125rem; }

.stats-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: .75rem; }
.stat-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: .75rem; padding: 1rem; text-align: center; }
.stat-value { font-size: 1.5rem; font-weight: 700; }
.stat-value-primary { color: var(--primary-light); }
.stat-value-accent { color: var(--secondary-light); }
.stat-value-secondary { color: var(--warm); }
.stat-label { font-size: .75rem; color: var(--text-dim); margin-top: .25rem; }

.crosslinks {
            margin-top: 3rem; margin-bottom: 0;
            padding: 1.5rem;
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: 1rem;
        }
        .crosslinks-title {
            font-size: .75rem; font-weight: 600;
            color: rgba(255,255,255,0.35);
            text-transform: uppercase; letter-spacing: .1em;
            margin-bottom: 1rem;
            display: flex; align-items: center; gap: .5rem;
        }
        .crosslinks-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: .625rem;
        }
        .crosslink {
            display: flex; align-items: center; gap: .625rem;
            padding: .75rem 1rem;
            border-radius: .75rem;
            background: rgba(255,255,255,0.025);
            border: 1px solid rgba(255,255,255,0.05);
            text-decoration: none; color: #fff;
            transition: all .25s;
        }
        .crosslink:hover {
            background: rgba(255,255,255,0.05);
            border-color: rgba(255,255,255,0.1);
            transform: translateY(-2px);
        }
        .crosslink-emoji { font-size: 1.25rem; }
        .crosslink-info { min-width: 0; }
        .crosslink-name {
            font-size: .8125rem; font-weight: 600;
            color: rgba(255,255,255,0.85);
        }
        .crosslink-sub {
            font-size: .6875rem;
            color: rgba(255,255,255,0.35);
        }
 .share-block {
            padding: 1.25rem;
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: .875rem;
            text-align: center;
        }
        .share-title {
            font-size: .75rem; font-weight: 600;
            color: rgba(255,255,255,0.35);
            text-transform: uppercase; letter-spacing: .08em;
            margin-bottom: .75rem;
        }
        .share-buttons {
            display: flex; justify-content: center;
            flex-wrap: wrap; gap: .5rem;
        }
        .share-btn {
            display: inline-flex; align-items: center; gap: .375rem;
            padding: .5rem 1rem; border-radius: .5rem;
            font-size: .8125rem; font-weight: 500;
            text-decoration: none; color: rgba(255,255,255,0.7);
            border: 1px solid rgba(255,255,255,0.06);
            background: rgba(255,255,255,0.03);
            transition: all .25s; cursor: pointer;
        }
        .share-btn:hover {
            background: rgba(255,255,255,0.06);
            color: #fff;
            transform: translateY(-1px);
        }
        .share-btn-tg:hover { border-color: rgba(38,166,227,0.3); }
        .share-btn-vk:hover { border-color: rgba(76,117,163,0.3); }
        .share-btn-tw:hover { border-color: rgba(29,155,240,0.3); }
        .share-btn-copy:hover { border-color: rgba(139,92,246,0.3); }
.footer { margin-top: 4rem; text-align: center; padding-bottom: 2rem; }
.footer p { color: rgba(255,255,255,0.15); font-size: .875rem; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: rgba(255,255,255,0.02); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 4px; }
::selection { background: rgba(99,102,241,0.3); color: #fff; }