/* ═══════════════════════════════════════════════════════════
   LUMIN v4.0 — Core Design System
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Syne:wght@400;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg: #000; --bg-1: #070709; --bg-2: #0a0a0f; --bg-3: #0f0f17;
  --panel: #0c0c14; --panel-2: #10101c; --panel-3: #15152a;
  --ink: #fff; --ink-2: #e0e0e8; --dim: #777; --dim-2: #444; --dim-3: #2a2a3a;
  --line: rgba(255,255,255,0.07); --line-2: rgba(255,255,255,0.04);
  --line-bright: rgba(255,255,255,0.15);
  --accent: #ff2d55; --accent-2: #ff1744;
  --gold: #ffb800; --gold-2: #ffd54f;
  --cyan: #00e5ff; --cyan-2: #18ffff;
  --lime: #b6ff00; --lime-2: #c6ff40;
  --violet: #8b00ff; --violet-2: #b040ff;
  --pink: #ff69e6; --blue: #0066ff;
  --orange: #ff5500; --green: #00ffa8;
  --glass: rgba(255,255,255,0.03);
  --glass-2: rgba(255,255,255,0.06);
  --shadow-color: rgba(0,0,0,0.5);
  --glow-accent: 0 0 20px rgba(255,45,85,0.3);
  --glow-cyan: 0 0 20px rgba(0,229,255,0.3);
  --glow-gold: 0 0 20px rgba(255,184,0,0.3);
  --radius: 2px; --radius-md: 6px; --radius-lg: 12px;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --font-ui: 'Inter', sans-serif;
  --transition-fast: 0.12s ease;
  --transition: 0.2s ease;
  --transition-slow: 0.4s ease;
}

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

html, body {
  height: 100%; width: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  line-height: 1.5;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--dim-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--dim-2); }

/* ─── Typography ─── */
.font-display { font-family: var(--font-display); }
.font-mono { font-family: var(--font-mono); }
.font-ui { font-family: var(--font-ui); }
.text-xs { font-size: 10px; } .text-sm { font-size: 12px; } .text-md { font-size: 14px; }
.text-lg { font-size: 18px; } .text-xl { font-size: 24px; } .text-2xl { font-size: 32px; }
.text-3xl { font-size: 48px; } .text-giant { font-size: clamp(48px, 12vw, 140px); }
.fw-400 { font-weight: 400; } .fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; } .fw-800 { font-weight: 800; }
.uppercase { text-transform: uppercase; } .tracking-wide { letter-spacing: 0.15em; }
.tracking-wider { letter-spacing: 0.25em; } .tracking-tight { letter-spacing: -0.03em; }

/* ─── Labels ─── */
.label {
  font-family: var(--font-mono); font-size: 10px; color: var(--dim);
  letter-spacing: 0.2em; text-transform: uppercase; display: block; margin-bottom: 8px;
}

/* ─── Inputs ─── */
.input {
  width: 100%; padding: 10px 12px; background: rgba(0,0,0,0.4);
  border: 1px solid var(--line); color: var(--ink); font-size: 13px;
  outline: none; transition: border-color var(--transition);
  font-family: var(--font-ui); border-radius: var(--radius);
}
.input:focus { border-color: var(--accent); }
.input-giant {
  padding: 20px; font-size: 36px; font-weight: 700; text-align: center;
  letter-spacing: 0.15em; font-family: var(--font-mono);
  background: transparent; border: 2px solid var(--line);
}
.input-giant:focus { border-color: var(--cyan); box-shadow: var(--glow-cyan); }

/* ─── Buttons ─── */
.btn {
  padding: 10px 16px; border: 1px solid var(--line); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase; transition: all var(--transition);
  font-family: var(--font-mono); display: inline-flex; align-items: center;
  justify-content: center; gap: 6px; border-radius: var(--radius);
  background: var(--glass); color: var(--dim);
}
.btn:hover { border-color: var(--ink); color: var(--ink); background: var(--glass-2); }
.btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.btn-primary {
  padding: 12px 24px; background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #000; font-weight: 700; border: none; font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase; border-radius: var(--radius);
  transition: all var(--transition); font-family: var(--font-mono);
  box-shadow: 0 4px 20px rgba(255,45,85,0.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 30px rgba(255,45,85,0.4); }

.btn-danger {
  padding: 12px 24px; background: rgba(255,45,85,0.12); color: var(--accent);
  border: 1px solid var(--accent); font-weight: 600; font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase; border-radius: var(--radius);
  font-family: var(--font-mono); transition: all var(--transition);
}
.btn-danger:hover { background: var(--accent); color: #fff; }

.btn-secondary {
  padding: 12px 24px; background: rgba(0,229,255,0.1); color: var(--cyan);
  border: 1px solid rgba(0,229,255,0.3); font-weight: 600; font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase; border-radius: var(--radius);
  font-family: var(--font-mono); transition: all var(--transition);
}
.btn-secondary:hover { background: rgba(0,229,255,0.2); }

.btn-ghost {
  padding: 10px 16px; background: transparent; color: var(--dim);
  border: 1px solid var(--line); font-size: 11px; transition: all var(--transition);
  letter-spacing: 0.12em; text-transform: uppercase; font-family: var(--font-mono);
}
.btn-ghost:hover { color: var(--ink); border-color: var(--ink); }

.btn-icon { width: 36px; height: 36px; padding: 0; display: flex; align-items: center; justify-content: center; }

.btn-broadcast {
  width: 100%; padding: 14px; background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #000; font-weight: 700; letter-spacing: 0.12em; font-size: 12px;
  text-transform: uppercase; transition: all var(--transition);
  font-family: var(--font-mono); border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(255,45,85,0.25); border: none;
}
.btn-broadcast:hover { transform: scale(1.01); box-shadow: 0 6px 30px rgba(255,45,85,0.4); }

.btn-blackout {
  width: 100%; padding: 12px; background: var(--bg-2); color: var(--ink);
  border: 1px solid var(--line); font-weight: 600; letter-spacing: 0.12em;
  font-size: 11px; text-transform: uppercase; font-family: var(--font-mono);
  border-radius: var(--radius); transition: all var(--transition);
}
.btn-blackout:hover { border-color: var(--accent); color: var(--accent); }

/* ─── Effect Buttons ─── */
.effect-grid { display: grid; gap: 4px; }
.effect-grid.cols-2 { grid-template-columns: 1fr 1fr; }
.effect-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.effect-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.effect-btn {
  padding: 10px 6px; border: 1px solid var(--line); background: var(--glass);
  font-size: 10px; color: var(--dim); transition: all var(--transition-fast);
  letter-spacing: 0.08em; text-transform: uppercase; position: relative;
  overflow: hidden; line-height: 1.2; font-family: var(--font-mono);
  border-radius: var(--radius); text-align: center; cursor: pointer;
}
.effect-btn:hover { border-color: var(--line-bright); color: var(--ink); background: var(--glass-2); }
.effect-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.effect-btn .icon { display: block; font-size: 16px; margin-bottom: 2px; line-height: 1; }

/* ─── Color Palette ─── */
.color-palette { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; }
.color-swatch {
  aspect-ratio: 1; border-radius: 50%; border: 2px solid transparent;
  cursor: pointer; transition: all var(--transition); min-width: 0;
}
.color-swatch:hover { transform: scale(1.15); }
.color-swatch.active { border-color: var(--ink); transform: scale(1.15); box-shadow: 0 0 10px currentColor; }

/* ─── Slider ─── */
.slider-row { margin-bottom: 10px; }
.slider-header { display: flex; justify-content: space-between; margin-bottom: 4px; align-items: center; }
.slider-val { font-family: var(--font-mono); font-size: 11px; color: var(--lime); }
input[type=range] {
  width: 100%; appearance: none; -webkit-appearance: none;
  background: var(--dim-3); height: 4px; border-radius: 2px; outline: none;
}
input[type=range]::-webkit-slider-thumb {
  appearance: none; -webkit-appearance: none; width: 14px; height: 14px;
  background: var(--ink); border-radius: 50%; cursor: pointer;
  border: 2px solid var(--accent); box-shadow: 0 0 8px rgba(255,45,85,0.4);
}

/* ─── Toggle Switch ─── */
.toggle-wrap { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.toggle-switch {
  width: 34px; height: 18px; border-radius: 10px; background: var(--dim-3);
  position: relative; transition: background var(--transition); flex-shrink: 0;
}
.toggle-switch.on { background: var(--lime); }
.toggle-switch::after {
  content: ''; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; transition: transform var(--transition);
}
.toggle-switch.on::after { transform: translateX(16px); background: #000; }

/* ─── Badges ─── */
.badge {
  display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.15em;
  text-transform: uppercase; border-radius: var(--radius);
}
.badge-live { background: rgba(255,45,85,0.15); color: var(--accent); border: 1px solid var(--accent); }
.badge-pre { background: rgba(0,229,255,0.15); color: var(--cyan); border: 1px solid rgba(0,229,255,0.3); }
.badge-connected { background: rgba(182,255,0,0.1); color: var(--lime); border: 1px solid rgba(182,255,0,0.3); }

.live-dot {
  width: 6px; height: 6px; border-radius: 50%; background: currentColor;
  animation: dot-pulse 1s infinite;
}
@keyframes dot-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ─── Info Box ─── */
.info-box {
  background: rgba(0,229,255,0.05); border-left: 3px solid var(--cyan);
  padding: 10px 12px; margin-bottom: 12px; font-size: 11px; color: #aaa; line-height: 1.6;
}
.info-box strong { color: var(--cyan); }

/* ─── Section block ─── */
.section-block { margin-bottom: 14px; }

/* ─── Toast ─── */
.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(100px);
  background: var(--ink); color: var(--bg); padding: 10px 24px; font-weight: 700;
  letter-spacing: 0.1em; font-size: 11px; text-transform: uppercase;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); z-index: 10000;
  font-family: var(--font-mono); border-radius: var(--radius);
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ─── Animations ─── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes glow-pulse {
  0%, 100% { filter: drop-shadow(0 0 20px rgba(255,45,85,0.4)); }
  50% { filter: drop-shadow(0 0 60px rgba(255,184,0,0.6)); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-fade { animation: fadeIn 0.4s ease; }
.animate-slide { animation: slideUp 0.5s ease; }