/* ═══════════════════════════════════════════════════════════════════
   RIPPLE — Shared Design System
   ═══════════════════════════════════════════════════════════════════ */

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

:root {
  --bg: #080810;
  --bg-surface: #0c0c1a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);
  --bg-sidebar: #0a0a18;
  --border: rgba(255,255,255,0.08);
  --border-bright: rgba(255,255,255,0.15);
  --text: #f0f0ff;
  --text-muted: rgba(240,240,255,0.5);
  --text-dim: rgba(240,240,255,0.3);
  --accent: #6366f1;
  --bg-dark: #09080e;
  --bg-surface: #14131d;
  --bg-elevated: #1a1825;
  --glass-bg: rgba(26, 24, 37, 0.4);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: blur(24px);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --accent-primary: #8b5cf6;
  --accent-bright: #a855f7;
  --accent-glow: rgba(139, 92, 246, 0.4);
  --gradient-accent: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
  
  --border: rgba(255, 255, 255, 0.08);
  --radius-lg: 16px;
  --radius: 12px;
  --radius-sm: 8px;
  
  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--accent-bright); text-decoration: none; }
a:hover { color: var(--text); }

/* ─── Glass Cards ───────────────────────────────────────────────── */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.glass-card-inner {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
}

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0.7rem 1.5rem; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
  color: white; border: none; font-family: var(--font);
  font-size: 0.9rem; font-weight: 700; cursor: pointer;
  box-shadow: 0 0 24px var(--accent-glow);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap; text-decoration: none;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--accent-glow), 0 8px 32px rgba(0,0,0,0.3);
  color: white;
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 0.5rem 1rem; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: transparent;
  color: var(--text-muted); font-size: 0.82rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s; font-family: var(--font);
}
.btn-ghost:hover { border-color: var(--border-bright); color: var(--text); }

/* ─── Badges ────────────────────────────────────────────────────── */
.badge {
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.5px;
  padding: 2px 8px; border-radius: 999px; text-transform: uppercase;
}
.badge-idle { background: rgba(255,255,255,0.06); color: var(--text-muted); }
.badge-running { background: rgba(99,102,241,0.2); color: var(--accent-bright); animation: badge-pulse 1.5s ease infinite; }
.badge-done { background: rgba(16,185,129,0.15); color: var(--green); }
.badge-error { background: rgba(239,68,68,0.15); color: var(--red); }
.badge-revising { background: rgba(236,72,153,0.15); color: var(--pink); animation: badge-pulse 1.5s ease infinite; }

@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ─── Tags ──────────────────────────────────────────────────────── */
.tech-tag {
  font-size: 0.7rem; font-weight: 600; padding: 3px 8px;
  border-radius: 999px; border: 1px solid var(--border);
  color: var(--text-muted); font-family: var(--font-mono);
}

/* ─── Animations ────────────────────────────────────────────────── */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes shimmer {
  0% { opacity: 0.5; }
  50% { opacity: 1; }
  100% { opacity: 0.5; }
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  33% { transform: translateY(-20px) scale(1.02); }
  66% { transform: translateY(12px) scale(0.98); }
}

/* ─── Scrollbar ─────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 999px; }

/* ─── Utilities ─────────────────────────────────────────────────── */
.hidden { display: none !important; }
.gradient-text {
  background: linear-gradient(135deg, var(--accent-bright) 0%, #c084fc 50%, #67e8f9 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradient-shift 6s ease infinite;
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}