/* ══════════════════════════════════════
   PRINT GRID — DESIGN SYSTEM
   Linear.app inspired minimalist design
   ══════════════════════════════════════ */

/* ── CSS VARIABLES ── */
:root {
  /* Colors - Base */
  --bg-base:        #0A0F1C;
  --bg-surface:     #111827;
  --bg-elevated:    #111827;

  /* Colors - Glass */
  --glass:          rgba(20, 20, 24, 0.72);
  --glass-border:   rgba(255, 255, 255, 0.08);
  --glass-border-h: rgba(255, 255, 255, 0.16);

  /* Colors - Brand */
  --blue:           #3B82F6;
  --blue-dim:       rgba(59, 130, 246, 0.18);
  --blue-glow:      rgba(59, 130, 246, 0.35);
  --orange:         #FF9800;
  --orange-dim:     rgba(255, 152, 0, 0.18);
  --orange-glow:    rgba(255, 152, 0, 0.4);

  /* Colors - Semantic */
  --green:          #10B981;
  --green-dim:      rgba(16, 185, 129, 0.18);
  --yellow:         #F59E0B;
  --yellow-dim:     rgba(245, 158, 11, 0.18);
  --red:            #EF4444;
  --red-dim:        rgba(239, 68, 68, 0.18);
  --purple:         #A855F7;
  --purple-dim:     rgba(168, 85, 247, 0.18);

  /* Colors - Text */
  --text-primary:   rgba(255, 255, 255, 0.92);
  --text-secondary: rgba(255, 255, 255, 0.5);
  --text-muted:     rgba(255, 255, 255, 0.28);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Aliases for legacy/mockup compat */
  --sans: var(--font-sans);
  --mono: var(--font-mono);

  /* Effects */
  --blur: blur(25px) saturate(180%);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 32px 80px rgba(0,0,0,0.6);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
}

/* ── LIGHT MODE ── */
[data-theme="light"],
html.theme-light {
  --bg-base:        #ffffff;
  --bg-surface:     #f5f5f5;
  --bg-elevated:    #eeeeee;
  --glass:          rgba(255, 255, 255, 0.8);
  --text-primary:   rgba(0, 0, 0, 0.87);
  --text-secondary: rgba(0, 0, 0, 0.6);
  --text-muted:     rgba(0, 0, 0, 0.38);
}

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

html, body {
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-base);
  font-family: var(--font-sans);
  color: var(--text-primary);
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* ── GLASS PANEL ── */
.glass-panel {
  background: var(--glass);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: border-color var(--transition-slow);
}
.glass-panel:hover { border-color: var(--glass-border-h); }

/* ── CARD ── */
.card {
  flex-shrink: 0;
  background: rgba(255,255,255,0.035);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 14px;
  cursor: pointer;
  transition: background var(--transition-base),
              border-color var(--transition-base),
              transform var(--transition-fast),
              box-shadow var(--transition-base);
}
.card:hover {
  background: rgba(255,255,255,0.065);
  border-color: var(--glass-border-h);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.card.active {
  border-color: rgba(59,130,246,0.4);
  background: var(--blue-dim);
  box-shadow: 0 0 0 1px rgba(59,130,246,0.2) inset;
}

/* ── STATUS BADGES ── */
.status-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 20px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.status-badge.green  { background: var(--green-dim);  color: var(--green);  border: 1px solid rgba(16,185,129,0.3); }
.status-badge.yellow { background: var(--yellow-dim); color: var(--yellow); border: 1px solid rgba(245,158,11,0.3); }
.status-badge.blue   { background: var(--blue-dim);   color: var(--blue);   border: 1px solid rgba(59,130,246,0.3); }
.status-badge.red    { background: var(--red-dim);    color: var(--red);    border: 1px solid rgba(239,68,68,0.3); }
.status-badge.orange { background: var(--orange-dim); color: var(--orange); border: 1px solid rgba(255,152,0,0.3); }
.status-badge.purple { background: rgba(156,39,176,0.18); color: #BA68C8; border: 1px solid rgba(156,39,176,0.3); }
.status-badge.grey   { background: rgba(158,158,158,0.18); color: rgba(255,255,255,0.6); border: 1px solid rgba(158,158,158,0.3); }

/* ── BUTTONS ── */
.btn-primary {
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 14px var(--blue-glow);
}
.btn-primary:hover {
  background: #2563EB;
  transform: scale(1.03);
  box-shadow: 0 6px 20px var(--blue-glow);
}

.btn-secondary {
  background: rgba(255,255,255,0.055);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.09);
  border-color: var(--glass-border-h);
}

.btn-accent {
  background: var(--orange);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 14px var(--orange-glow);
}
.btn-accent:hover {
  background: #F57C00;
  transform: scale(1.03);
  box-shadow: 0 6px 20px var(--orange-glow);
}

/* ── TYPOGRAPHY ── */
.heading-1 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.heading-2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}
.heading-3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}
.body-1 {
  font-size: 13px;
  color: var(--text-primary);
  line-height: 1.6;
}
.body-2 {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.caption {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ── CHAT BUBBLES ── */
.chat-bubble {
  max-width: 75%;
  padding: 11px 14px;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.6;
}
.chat-bubble.ai {
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: 14px 14px 14px 4px;
}
.chat-bubble.user {
  background: var(--blue);
  color: #fff;
  border-radius: 14px 14px 4px 14px;
  box-shadow: 0 4px 20px rgba(59,130,246,0.3);
}

/* ── PANEL STRUCTURE ── */
.panel-header {
  padding: 18px 18px 12px;
  flex-shrink: 0;
}
.panel-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-title .count-badge {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 1px 8px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}
.panel-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 0 14px 14px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

/* ── PROGRESS BAR ── */
.progress-track {
  height: 4px;
  background: rgba(255,255,255,0.08);
  border-radius: 20px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 20px;
  background: linear-gradient(90deg, var(--blue) 0%, #60A5FA 100%);
  box-shadow: 0 0 8px rgba(59,130,246,0.5);
  transition: width 0.6s ease;
}

/* ── SPEC CHIP ── */
.spec-chip {
  font-size: 9px;
  font-weight: 500;
  font-family: var(--font-mono);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--text-muted);
}

/* ── ANIMATIONS ── */
@keyframes pulse {
  0%, 80%, 100% { opacity: 0.3; transform: scale(1); }
  40%           { opacity: 1;   transform: scale(1.3); }
}
@keyframes aura-pulse {
  0%, 100% { box-shadow: 0 0 12px rgba(59,130,246,0.1); }
  50%       { box-shadow: 0 0 24px rgba(59,130,246,0.22); }
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ── RESPONSIVE BREAKPOINTS ── */
@media (max-width: 768px) {
  .kb-grid {
    flex-direction: column !important;
    overflow-y: auto !important;
  }
  .kb-col {
    border-right: none !important;
    border-bottom: 1px solid var(--glass-border);
    min-height: 300px;
  }
  .glass-panel {
    border-radius: var(--radius-lg);
  }
}

@media (max-width: 480px) {
  .panel-header {
    padding: 12px;
  }
  .card {
    padding: 10px;
  }
  .heading-1 {
    font-size: 20px;
  }
}