/* ==========================================================================
   C++ DSA & LLD: Table of Contents Tracker - Stylesheet
   ========================================================================== */

:root {
  --bg-primary: #0a0d14;
  --bg-card: #111724;
  --bg-card-hover: #161e2e;
  --bg-muted: #1c2638;
  --border-color: #24324d;
  --border-focus: #3b82f6;
  --text-primary: #f3f4f6;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, Monaco, Consolas, monospace;
}

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

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

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #334567;
}

/* Monospace text */
.font-mono-code {
  font-family: var(--font-mono);
}

/* Transitions */
.smooth-all {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Custom Checkbox */
.custom-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid #475569;
  border-radius: 6px;
  background-color: #0f172a;
  cursor: pointer;
  display: inline-grid;
  place-content: center;
  transition: all 0.15s ease-in-out;
  flex-shrink: 0;
}

.custom-checkbox:hover {
  border-color: var(--accent-green);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.3);
}

.custom-checkbox:checked {
  background-color: var(--accent-green);
  border-color: var(--accent-green);
}

.custom-checkbox:checked::before {
  content: "";
  width: 10px;
  height: 6px;
  border-left: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: rotate(-45deg) translate(1px, -1px);
}

/* Status Badges */
.badge-status-todo {
  background-color: rgba(71, 85, 105, 0.2);
  color: #94a3b8;
  border: 1px solid rgba(71, 85, 105, 0.4);
}
.badge-status-in_progress {
  background-color: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
}
.badge-status-done {
  background-color: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

/* Progress bar fill animations */
.progress-fill-animate {
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Code Modal */
.code-modal-backdrop {
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
}

/* Syntax pre styling */
pre[class*="language-"] {
  background: #0f172a !important;
  margin: 0 !important;
  border-radius: 0 0 8px 8px !important;
  font-family: var(--font-mono) !important;
  font-size: 0.85rem !important;
  line-height: 1.5 !important;
}

code[class*="language-"] {
  font-family: var(--font-mono) !important;
  font-size: 0.85rem !important;
}