/* ═══════════════════════════════════════════════
   UFS KARAOKE v2 — Shared Design System
   TV / Tablet / Laptop responsive display
   ═══════════════════════════════════════════════ */

/* ───── DESIGN TOKENS ───── */
:root {
    --bg: #06060F;
    --bg2: #0A0A1A;
    --bg3: #0E0E22;
    --surface: rgba(255,255,255,0.04);
    --surface2: rgba(255,255,255,0.07);
    --surface3: rgba(255,255,255,0.11);
    --glass: rgba(10,10,26,0.82);
    --glass2: rgba(10,10,26,0.95);
    --border: rgba(255,255,255,0.06);
    --border2: rgba(255,255,255,0.12);
    --border3: rgba(255,255,255,0.18);
    --gold: #D4A843;
    --gold-soft: rgba(212,168,67,0.12);
    --gold-border: rgba(212,168,67,0.25);
    --cyan: #4FC3F7;
    --cyan-soft: rgba(79,195,247,0.10);
    --cyan-border: rgba(79,195,247,0.25);
    --green: #00E676;
    --green-soft: rgba(0,230,118,0.10);
    --red: #FF5252;
    --red-soft: rgba(255,82,82,0.10);
    --magenta: #E040FB;
    --magenta-soft: rgba(224,64,251,0.10);
    --yt: #FF3333;
    --yt-soft: rgba(255,51,51,0.10);
    --text: #F0F0FA;
    --text2: rgba(240,240,250,0.55);
    --text3: rgba(240,240,250,0.30);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-lg: 0 16px 64px rgba(0,0,0,0.5);
    --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
    --font-display: 'Bebas Neue', system-ui, sans-serif;
    --font-body: 'Outfit', system-ui, sans-serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
}

/* ───── RESET ───── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ───── ANIMATIONS ───── */
@keyframes fadeIn { from { opacity:0 } to { opacity:1 } }
@keyframes fadeUp { from { opacity:0; transform:translateY(16px) } to { opacity:1; transform:translateY(0) } }
@keyframes fadeDown { from { opacity:0; transform:translateY(-12px) } to { opacity:1; transform:translateY(0) } }
@keyframes scaleIn { from { opacity:0; transform:scale(0.92) } to { opacity:1; transform:scale(1) } }
@keyframes slideRight { from { opacity:0; transform:translateX(20px) } to { opacity:1; transform:translateX(0) } }
@keyframes slideLeft { from { opacity:0; transform:translateX(-20px) } to { opacity:1; transform:translateX(0) } }
@keyframes shimmer { 0%{background-position:-300% center} 100%{background-position:300% center} }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.35} }
@keyframes spin { to { transform:rotate(360deg) } }
@keyframes waveBar { 0%,100%{transform:scaleY(0.3)} 50%{transform:scaleY(1)} }
@keyframes glow { 0%,100%{box-shadow:0 0 8px rgba(79,195,247,0.2)} 50%{box-shadow:0 0 24px rgba(79,195,247,0.4)} }
@keyframes tickerScroll { from{transform:translateX(0)} to{transform:translateX(-50%)} }
@keyframes micPulse { 0%,100%{box-shadow:0 0 0 0 rgba(255,82,82,0.4)} 50%{box-shadow:0 0 0 12px rgba(255,82,82,0)} }
@keyframes countUp { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }

/* ───── UTILITY CLASSES ───── */
.hidden { display: none !important; }
.glass {
    background: var(--glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border);
}
.glass2 {
    background: var(--glass2);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid var(--border2);
}
.label {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 3px;
    color: var(--text3);
    text-transform: uppercase;
}
.chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 30px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text2);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.chip.active, .chip.focused, .chip[data-focusable="true"].focused {
    border-color: var(--cyan-border);
    background: var(--cyan-soft);
    color: var(--cyan);
}
.chip.focused, .chip[data-focusable="true"].focused {
    box-shadow: 0 0 0 2px var(--cyan), 0 0 16px rgba(79,195,247,0.2);
}
.chip:active { transform: scale(0.95); }

/* ───── SCROLLBAR ───── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

/* ───── LOADING STATES ───── */
.spinner {
    width: 28px; height: 28px;
    border: 2.5px solid var(--border2);
    border-top-color: var(--cyan);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
.skeleton {
    background: linear-gradient(90deg, var(--surface) 0%, var(--surface2) 50%, var(--surface) 100%);
    background-size: 300% 100%;
    animation: shimmer 1.6s infinite;
    border-radius: var(--radius-sm);
}

/* ───── EQ VISUALIZER ───── */
.eq {
    display: flex;
    align-items: flex-end;
    gap: 2.5px;
    height: 16px;
}
.eq span {
    display: block;
    width: 3px;
    border-radius: 2px;
    background: var(--cyan);
}
.eq span:nth-child(1) { height: 7px; animation: waveBar 0.8s ease-in-out infinite; }
.eq span:nth-child(2) { height: 14px; animation: waveBar 0.8s ease-in-out 0.2s infinite; }
.eq span:nth-child(3) { height: 10px; animation: waveBar 0.8s ease-in-out 0.4s infinite; }

/* ───── TOAST ───── */
#toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: none;
    pointer-events: none;
}
.toast-inner {
    background: var(--glass2);
    border: 1px solid var(--border2);
    border-radius: 50px;
    padding: 10px 22px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-md);
    animation: fadeDown 0.3s ease;
}
.toast-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}
.toast-txt {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.toast-ok .toast-dot { background: var(--green); }
.toast-ok .toast-txt { color: var(--green); }
.toast-info .toast-dot { background: var(--cyan); }
.toast-info .toast-txt { color: var(--cyan); }
.toast-warn .toast-dot { background: var(--red); }
.toast-warn .toast-txt { color: var(--red); }
.toast-gold .toast-dot { background: var(--gold); }
.toast-gold .toast-txt { color: var(--gold); }

/* ───── EMPTY STATE ───── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    gap: 10px;
    opacity: 0.6;
}
.empty-icon { font-size: 36px; }
.empty-txt {
    font-size: 13px;
    color: var(--text3);
    text-align: center;
    line-height: 1.6;
}

/* ───── RESULT ITEM (shared search results) ───── */
.result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
    animation: fadeUp 0.3s ease both;
}
.result-item:active, .result-item.focused, .result-item[data-focusable="true"].focused {
    background: rgba(79,195,247,0.1);
    border-left: 3px solid var(--cyan);
    box-shadow: 0 0 20px rgba(79,195,247,0.1);
}
.ri-thumb {
    width: 56px;
    height: 42px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--surface2);
}
.ri-info { flex: 1; min-width: 0; }
.ri-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}
.ri-channel {
    font-size: 11px;
    color: var(--text3);
    margin-top: 2px;
}
.ri-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}
.ri-btn {
    padding: 6px 14px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 8px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text2);
}
.ri-btn.play {
    border-color: var(--cyan-border);
    background: var(--cyan-soft);
    color: var(--cyan);
}
.ri-btn.queue {
    border-color: var(--gold-border);
    background: var(--gold-soft);
    color: var(--gold);
}
.ri-btn.fav {
    border-color: var(--magenta-soft);
    background: var(--magenta-soft);
    color: var(--magenta);
}
.ri-btn:active { transform: scale(0.92); }
.ri-btn.focused, .ri-btn[data-focusable="true"].focused { border-color: var(--cyan); background: var(--cyan-soft); color: white; transform: scale(1.1); }
.q-del-btn { background: var(--red-soft); border-color: var(--red); color: var(--red); }
.q-del-btn.focused, .q-del-btn[data-focusable="true"].focused { background: var(--red); color: white; box-shadow: 0 0 16px rgba(255,82,82,0.4); transform: scale(1.1); }

/* ───── RESPONSIVE BREAKPOINTS ───── */
/* Mobile: default */
/* Tablet: 768px+ */
/* Laptop: 1024px+ */
/* TV: 1280px+ */

@media (min-width: 768px) {
    :root { font-size: 17px; }
}
@media (min-width: 1280px) {
    :root { font-size: 18px; }
}