/* ==========================================================================
   Yadanabon University - Exam Results Portal
   Design: Permanent Dark Mode (Red, Blue and White Theme)
   (ရတနာပုံ တက္ကသိုလ် - Dark Mode သီးသန့် အပြာရင့်၊ အနီရောင်နှင့် အဖြူရောင်စုံ)
   ========================================================================== */

:root, [data-theme="dark"] {
  /* Permanent Dark Mode Palette */
  --bg-body: #070b14;           /* Deep Obsidian Midnight Navy */
  --bg-card: #0d1527;           /* Sleek Dark Navy-Slate Card */
  --border-color: #1a2642;      /* Refined Dark Border */
  --border-subtle: #141e34;

  --text-main: #ffffff;         /* Pure Crisp White Typography */
  --text-muted: #94a3b8;        /* Soft Readable Slate */
  --text-dim: #64748b;

  /* University Royal Blue */
  --royal-blue: #1d4ed8;        /* Vibrant Royal Blue Accent */
  --royal-blue-dark: #002f87;   /* Deep Royal Blue Banner */
  --royal-blue-hover: #2563eb;
  --royal-blue-light: rgba(37, 99, 235, 0.12);
  --royal-blue-border: rgba(59, 130, 246, 0.35);

  /* University Crimson Red */
  --crimson-red: #ef4444;       /* Standout Crimson Red for Downloads */
  --crimson-red-dark: #dc2626;  /* Deep Crimson Hover */
  --crimson-red-glow: rgba(239, 68, 68, 0.45);

  --font-mm: 'Noto Sans Myanmar', 'Pyidaungsu', 'Myanmar Text', sans-serif;
  --font-en: 'Inter', sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

html {
  background-color: var(--bg-body);
  color-scheme: dark;
}

body {
  font-family: var(--font-mm), var(--font-en);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ==========================================================================
   Solid Royal Blue Banner Header with Red Accent Stripe
   ========================================================================== */
.site-header {
  background: var(--royal-blue-dark);
  border-bottom: 4px solid var(--crimson-red);
  padding: 1.25rem 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  text-decoration: none;
}

.brand-logo {
  width: 58px;
  height: 58px;
  object-fit: contain;
  border-radius: 50%;
  display: block;
  border: 2px solid #ffffff;
  background: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
}

.brand-name-mm {
  font-size: 1.45rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.2;
  letter-spacing: 0.3px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

.brand-sub {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 600;
  margin-top: 0.2rem;
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */
.main-wrapper {
  flex: 1;
  padding: 2.25rem 0 3.5rem;
}

/* Two Clear Segmented Tabs: Day (2025-2026) vs Distance (2026) */
.stream-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.tab-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.15rem 1.5rem;
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: 1.15rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.tab-btn:hover {
  border-color: var(--royal-blue);
  color: #93c5fd;
  background: #121c33;
}

.tab-btn.active {
  background: var(--royal-blue);
  border-color: var(--royal-blue);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(29, 78, 216, 0.45);
}

.tab-icon-day {
  color: #f59e0b;
}

.tab-icon-dist {
  color: #38bdf8;
}

.tab-btn.active .tab-icon-day,
.tab-btn.active .tab-icon-dist {
  color: #ffffff;
}

.tab-count-badge {
  font-size: 0.82rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: #141e34;
  color: var(--text-muted);
  font-weight: 700;
}

.tab-btn.active .tab-count-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* ==========================================================================
   Clean Results Table (Red, Blue and White Focus in Dark Mode)
   ========================================================================== */
.results-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-top: 3px solid var(--royal-blue);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.results-table th {
  background: #101a30;
  color: #93c5fd;
  font-size: 0.9rem;
  font-weight: 800;
  padding: 1rem 1.4rem;
  border-bottom: 2px solid var(--royal-blue);
}

.results-table td {
  padding: 1.15rem 1.4rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.results-table tbody tr:last-child td {
  border-bottom: none;
}

.results-table tbody tr {
  transition: background-color 0.15s ease;
}

.results-table tbody tr:hover {
  background-color: var(--royal-blue-light);
}

.col-order {
  width: 65px;
  text-align: center;
  font-weight: 700;
}

.order-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.2);
  color: #93c5fd;
  border: 1px solid var(--royal-blue-border);
  font-size: 0.88rem;
  font-weight: 800;
}

.col-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.4;
}

.col-actions {
  width: 220px;
  text-align: right;
  white-space: nowrap;
}

/* Standout Crimson Red Direct Download PDF Button */
.btn-dl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  background: var(--crimson-red);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--crimson-red);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 2px 10px rgba(239, 68, 68, 0.3);
}

.btn-dl:hover {
  background: var(--crimson-red-dark);
  border-color: var(--crimson-red-dark);
  box-shadow: 0 4px 16px var(--crimson-red-glow);
  transform: translateY(-1px);
}

.btn-dl:active {
  transform: translateY(0);
}

/* ==========================================================================
   Modal (Preserved for compatibility)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-window {
  background: var(--bg-card);
  color: #ffffff;
  width: 100%;
  max-width: 800px;
  max-height: 88vh;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6);
}

.modal-header {
  padding: 1rem 1.4rem;
  background: var(--royal-blue-dark);
  color: #ffffff;
  border-bottom: 3px solid var(--crimson-red);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.btn-close-modal {
  color: #ffffff;
  font-size: 1.35rem;
  cursor: pointer;
  border: none;
  background: none;
  line-height: 1;
}

.modal-body {
  padding: 1.75rem;
  overflow-y: auto;
}

.doc-paper {
  border: 1.5px solid var(--royal-blue);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  background: #101a30;
  text-align: center;
}

.doc-header-univ {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
}

.doc-header-sub {
  font-size: 0.85rem;
  color: var(--crimson-red);
  font-weight: 700;
  margin-top: 0.2rem;
  margin-bottom: 0.75rem;
}

.doc-badge-heading {
  display: inline-block;
  padding: 0.35rem 1.25rem;
  background: var(--royal-blue);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 4px;
  border-left: 3px solid var(--crimson-red);
  margin-bottom: 1.25rem;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.doc-table th {
  background: #16223d;
  color: #93c5fd;
  font-weight: 700;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border-color);
}

.doc-table td {
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border-color);
  color: #ffffff;
}

.pass-badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.78rem;
}

.pass-dist {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.pass-normal {
  background: rgba(37, 99, 235, 0.2);
  color: #93c5fd;
  border: 1px solid rgba(37, 99, 235, 0.4);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-card);
  padding: 1.35rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 680px) {
  .stream-tabs {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .tab-btn {
    font-size: 1rem;
    padding: 0.95rem 1rem;
  }
  .results-table th, .results-table td {
    padding: 0.75rem 0.6rem;
  }
  .col-actions {
    width: auto;
  }
  .btn-dl {
    padding: 0.5rem 0.85rem;
    font-size: 0.82rem;
  }
}