/* Base design tokens */
:root {
  --bg: #f6f7fb;
  --card-bg: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #3b82f6;
  --primary-ink: #0b3ea8;
  --soft: #eef2ff;
  --border: #e5e7eb;
  --success-soft: #ecfdf5;
  --danger-soft: #fef2f2;
  --info-soft: #eef6ff;
  --secondary-soft: #f4f5f7;
  --shadow: 0 8px 24px rgba(0,0,0,0.06);
}

:root[data-theme="dark"] {
  --bg: #111827;
  --card-bg: #0f172a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #60a5fa;
  --primary-ink: #1d4ed8;
  --soft: #1e293b;
  --border: #1f2937;
  --success-soft: #064e3b;
  --danger-soft: #7f1d1d;
  --info-soft: #0b2545;
  --secondary-soft: #0b1220;
  --shadow: 0 10px 30px rgba(0,0,0,0.4);
}

html, body {
  height: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Noto Sans', Arial, sans-serif;
  color: var(--text);
  background-color: var(--bg);
}

/* Navbar */
.navbar-glass {
  backdrop-filter: saturate(150%) blur(10px);
  background-color: rgba(255,255,255,0.6);
  border-bottom: 1px solid var(--border);
}
:root[data-theme="dark"] .navbar-glass {
  background-color: rgba(17,24,39,0.6);
}


/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 16px 0;
  margin-top: 40px;
  background: transparent;
}

/* Utility */
.bg-body {
  background: var(--bg);
}
.page-header {
  margin-bottom: 16px;
}
.page-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0;
}
.page-subtitle {
  margin: 4px 0 0 0;
  color: var(--muted);
}

/* Cards */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 14px;
}
.card-hover {
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.08);
  border-color: var(--primary);
}
.card-footer {
  background: transparent;
  border-top: 1px dashed var(--border);
}

/* Buttons */
.btn {
  border-radius: 10px;
}
.btn-ghost {
  background-color: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary-ink);
}

/* Badges */
.badge {
  border-radius: 8px;
  font-weight: 600;
}
.bg-soft {
  background-color: var(--secondary-soft);
  color: var(--muted);
}
.text-primary-emphasis {
  color: var(--primary-ink) !important;
}

/* Tables */
.table-modern {
  border-collapse: separate;
  border-spacing: 0;
}
.table-modern thead th {
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-weight: 600;
}
.table-modern tbody tr td {
  border-top: 0;
  border-bottom: 1px dashed var(--border);
  padding-top: 14px;
  padding-bottom: 14px;
}
.table-modern tbody tr:hover {
  background-color: var(--soft);
}

/* Toasts mapped to categories */
.toast {
  background: var(--card-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.toast-success .toast-body { color: #065f46; }
.toast-danger .toast-body { color: #7f1d1d; }
.toast-info .toast-body { color: #0b3ea8; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.empty-state .empty-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

/* Result page badges */
.result-card .score-badge {
  background: var(--info-soft);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  box-shadow: var(--shadow);
}
.result-card .grade-badge {
  background: var(--success-soft);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  box-shadow: var(--shadow);
}

/* Question blocks */
.question-block {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
}

/* Forms */
.form-control, .form-select {
  border-radius: 10px;
  border-color: var(--border);
  background-color: var(--card-bg);
  color: var(--text);
}
.form-control:focus, .form-select:focus {
  box-shadow: 0 0 0 .2rem rgba(59,130,246,0.15);
  border-color: var(--primary);
}

/* Subtle badges for types */
.bg-info-subtle { background-color: var(--info-soft); }
.text-info-emphasis { color: var(--primary-ink); }
.bg-success-subtle { background-color: var(--success-soft); }
.text-success-emphasis { color: #065f46; }
.bg-danger-subtle { background-color: var(--danger-soft); }
.text-danger-emphasis { color: #7f1d1d; }
.bg-secondary-subtle { background-color: var(--secondary-soft); }
.text-secondary-emphasis { color: var(--muted); }


/* Стили для экранов шириной до 768px (типичные смартфоны) */
@media (max-width: 768px){
    .navbar-nav{
        align-items: center;
    }

}