/* EduNeuro — admin + student share this token system.
   Portal-style palette: saffron · green · blue · navy. */
:root {
  --bg: #f5f7fb;
  --bg-soft: #eef2f8;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-soft: #334155;
  --muted: #64748b;
  --accent: #1d4ed8;
  --accent-soft: #3b82f6;
  --accent-hover: #1e40af;
  --accent-ring: rgba(29, 78, 216, 0.18);
  --accent2: #138808;
  --accent2-soft: #16a34a;
  --accent2-ring: rgba(19, 136, 8, 0.18);

  /* Portal palette (saffron + tricolor accents) */
  --saffron: #ff9933;
  --saffron-dark: #e87a13;
  --saffron-soft: #ffd58a;
  --saffron-ring: rgba(255, 153, 51, 0.22);
  --portal-green: #138808;
  --portal-green-dark: #0e6a06;
  --portal-blue: #1e3a8a;
  --portal-blue-dark: #102560;
  --portal-navy: #0a1d4a;
  --portal-grad: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 50%, #0ea5e9 100%);
  --portal-grad-saffron: linear-gradient(135deg, #ff9933 0%, #e87a13 100%);

  --warn: #c2410c;
  --error: #b91c1c;
  --success: #15803d;
  --success-bg: #ecfdf5;
  --warn-bg: #fff7ed;
  --error-bg: #fef2f2;
  --info-bg: #ecfeff;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 18px 38px rgba(15, 23, 42, 0.12);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* Portal tricolor strip — used at the top of admin/student shells to match the homepage */
.portal-tristrip {
  display: flex;
  width: 100%;
  height: 4px;
}
.portal-tristrip > span { flex: 1; height: 100%; display: block; }
.portal-tristrip__saffron { background: var(--saffron); }
.portal-tristrip__white { background: #ffffff; }
.portal-tristrip__green { background: var(--portal-green); }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "liga", "calt";
}

h1, h2, h3, h4, h5, h6 {
  letter-spacing: -0.015em;
  color: var(--text);
}

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

/* Bootstrap coexistence: keep our link/button styles stable */
.btn { text-decoration: none; }
.btn:hover { text-decoration: none; }

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.main-content { min-height: 58vh; padding: 1.25rem 0 2.5rem; }

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 1.1rem;
}

.brand-mark { color: var(--saffron-dark); }

/* Saffron emblem used in the legacy public header (matches homepage portal style) */
.brand .site-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ffd58a, var(--saffron) 55%, #c9690a 100%);
  color: #fff;
  font-weight: 900;
  font-size: 0.92rem;
  line-height: 1;
  font-family: "Georgia", "Times New Roman", serif;
  box-shadow: 0 4px 10px rgba(232, 122, 19, 0.28), inset 0 0 0 2px #ffffff;
  margin-right: 0.15rem;
}

.nav-main {
  display: flex;
  align-items: center;
  gap: 0.35rem 0.6rem;
  flex-wrap: wrap;
}

.nav-main a:not(.btn) {
  color: var(--muted);
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
  font-size: 0.92rem;
}

.nav-main a:not(.btn):hover {
  color: var(--text);
  text-decoration: none;
  background: rgba(21, 101, 192, 0.08);
}

.nav-main a:not(.btn).active {
  color: var(--accent);
  background: rgba(21, 101, 192, 0.12);
  font-weight: 600;
}

/* Header buttons should look like buttons, not nav links */
.nav-main a.btn {
  padding: 0.35rem 0.85rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1.2;
}

.nav-main a.btn.btn-primary {
  background: var(--accent);
  background-color: var(--accent);
  border-color: transparent;
  color: #fff !important;
  -webkit-text-fill-color: #fff;
}

/* prevent nav-link hover background from affecting buttons */
.nav-main a.btn:hover { background: var(--surface); }
.nav-main a.btn:hover { box-shadow: 0 8px 20px rgba(21, 101, 192, 0.12); }
.nav-main a.btn:hover { text-decoration: none; }
.nav-main a.btn:hover { color: var(--text) !important; }

.nav-main a.btn.btn-primary:hover {
  filter: brightness(1.06);
  background: var(--accent);
  background-color: var(--accent);
  border-color: transparent;
  color: #fff !important;
  -webkit-text-fill-color: #fff;
}

.nav-main a.btn.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.nav-main a.btn.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
}

/* Ensure link/visited states don't change button text color */
.nav-main a.btn:visited { color: var(--text); }
.nav-main a.btn.btn-primary:visited { color: #fff !important; }

/* Ensure primary button text stays white in all states */
.nav-main a.btn.btn-primary,
.nav-main a.btn.btn-primary:link,
.nav-main a.btn.btn-primary:active,
.nav-main a.btn.btn-primary:focus {
  color: #fff !important;
  -webkit-text-fill-color: #fff;
}

.user-chip {
  font-size: 0.82rem;
  color: var(--muted);
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #e3f2fd 0%, #f4f7fb 45%, #e0f2f1 100%);
  border-bottom: 1px solid var(--border);
  padding: 2.25rem 0 1.75rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text);
}

.hero p { color: var(--muted); max-width: 54ch; margin: 0; }

.muted { color: var(--muted); font-size: 0.92rem; }

/* Grid & cards */
.grid { display: grid; gap: 1rem; }

@media (min-width: 800px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.18s ease, border-color 0.18s ease;
}

.card:hover {
  box-shadow: var(--shadow);
}

.card h2, .card h3 { margin-top: 0; color: var(--text); }

.stat {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.stat-label {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

/* Tables */
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.data-table th,
table.data-table td {
  border-bottom: 1px solid var(--border);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

table.data-table th {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--surface-muted);
  border-bottom: 1px solid var(--border);
}

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

/* Badges */
.badge-pill {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: rgba(29, 78, 216, 0.1);
  color: var(--accent);
  border: 1px solid rgba(29, 78, 216, 0.18);
}

.badge-warn { background: rgba(194, 65, 12, 0.1); color: var(--warn); border-color: rgba(194, 65, 12, 0.2); }
.badge-ok, .badge-success { background: rgba(21, 128, 61, 0.1); color: var(--success); border-color: rgba(21, 128, 61, 0.2); }
.badge-danger, .badge-error { background: rgba(185, 28, 28, 0.1); color: var(--error); border-color: rgba(185, 28, 28, 0.2); }

/* Progress */
.progress-bar {
  height: 8px;
  background: var(--bg-soft);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-soft));
  width: 0%;
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1.05rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.92rem;
  line-height: 1.2;
  transition: transform 0.12s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn-sm { padding: 0.4rem 0.85rem; font-size: 0.82rem; border-radius: 8px; }

/* Pill / capsule primary (filter bars, CTAs) */
.btn-pill {
  border-radius: 999px;
  padding-left: 1.2rem;
  padding-right: 1.2rem;
}

.btn-sm.btn-pill {
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
  padding-left: 1.1rem;
  padding-right: 1.1rem;
  font-weight: 700;
}

/* Filter bar: label on first line; select + Apply side by side */
.admin-filter-bar {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.admin-filter-bar__label {
  margin-bottom: 0;
}

.admin-filter-bar__row {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  max-width: 100%;
}

.admin-filter-bar__select {
  /* Global select { width:100% } would fill the row and push Apply below */
  width: auto;
  flex: 1 1 12rem;
  min-width: 10rem;
  max-width: 22rem;
  margin-bottom: 0;
  min-height: 2.5rem;
  padding: 0.5rem 0.65rem;
}

.admin-filter-bar__submit {
  flex: 0 0 auto;
  margin-bottom: 0;
  min-height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 360px) {
  .admin-filter-bar__row {
    flex-wrap: wrap;
  }

  .admin-filter-bar__submit {
    width: 100%;
    justify-content: center;
  }
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
  box-shadow: 0 6px 16px rgba(29, 78, 216, 0.22);
  text-decoration: none;
}

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--surface);
  text-decoration: none;
}

.btn-danger {
  background: var(--error);
  color: #fff;
  border-color: var(--error);
}

.btn-danger:hover {
  background: #991b1b;
  border-color: #991b1b;
  color: #fff;
  box-shadow: 0 6px 16px rgba(185, 28, 28, 0.22);
}

/* Forms */
label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
  color: var(--text-soft);
  font-size: 0.86rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="datetime-local"],
input[type="date"],
input[type="search"],
input[type="tel"],
input[type="file"],
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  margin-bottom: 0.85rem;
  font-family: inherit;
  font-size: 0.93rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="file"] { padding: 0.45rem 0.55rem; background: var(--surface-muted); }
textarea { min-height: 110px; resize: vertical; line-height: 1.5; }

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

.form-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 0.65rem;
}

/* Alerts */
.alert {
  padding: 0.8rem 1rem;
  border-radius: 12px;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.92rem;
  line-height: 1.5;
}

.alert-error {
  background: var(--error-bg);
  border-color: #fecaca;
  color: #991b1b;
}

.alert-success {
  background: var(--success-bg);
  border-color: #a7f3d0;
  color: #065f46;
}

.alert-info {
  background: var(--info-bg);
  border-color: #a5f3fc;
  color: #155e75;
}

.alert-warn {
  background: var(--warn-bg);
  border-color: #fed7aa;
  color: #9a3412;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  margin-top: 2rem;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.leader-rank { font-weight: 700; color: var(--warn); width: 2.5rem; }

.cert-frame {
  border: 2px dashed var(--border);
  padding: 2rem;
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

@media print {
  .site-header, .site-footer, .no-print { display: none !important; }
  body { background: #fff; color: #000; }
  .cert-frame { border-color: #ccc; box-shadow: none; }
}

code {
  font-size: 0.85em;
  background: #eef3f9;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}