/* Simple LMS theme — light/dark, shared shell, forms, tables, cards */

:root {
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(28, 36, 48, 0.08);
  --space: 1.25rem;
  --max: 1100px;
  color-scheme: light;
  --bg: #f3efe6;
  --bg-accent: #e7efe9;
  --surface: #fffcf6;
  --text: #1c2430;
  --muted: #5c6b7a;
  --border: #ddd4c4;
  --accent: #0e6b5c;
  --accent-hover: #0a5448;
  --accent-soft: #d7eee8;
  --danger: #b42318;
  --danger-soft: #fce8e6;
  --success: #067647;
  --success-soft: #e3f6ec;
  --warn: #9a6700;
  --warn-soft: #fff4d6;
  --header: #14342e;
  --header-text: #f4f7f6;
  --nav-hover: rgba(255, 255, 255, 0.12);
  --focus: #0e6b5c;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #10161c;
  --bg-accent: #152018;
  --surface: #182128;
  --text: #eef2f6;
  --muted: #9aa8b6;
  --border: #2c3946;
  --accent: #4eccb6;
  --accent-hover: #7adbc9;
  --accent-soft: #1b3532;
  --danger: #ff8a80;
  --danger-soft: #3a2424;
  --success: #6ee7b7;
  --success-soft: #1b3530;
  --warn: #fbbf24;
  --warn-soft: #3a3018;
  --header: #0c1418;
  --header-text: #eef2f6;
  --nav-hover: rgba(255, 255, 255, 0.08);
  --focus: #4eccb6;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--text);
  background:
    radial-gradient(1200px 400px at 10% -10%, var(--bg-accent), transparent 60%),
    var(--bg);
}

img,
iframe,
video {
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(1.6rem, 2.4vw, 2.1rem); }
h2 { font-size: 1.25rem; margin-top: 1.8rem; }
h3 { font-size: 1.08rem; }

p { margin: 0 0 1rem; }

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 20;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
}

.skip-link:focus {
  top: 0.75rem;
}

.site-header {
  background: var(--header);
  color: var(--header-text);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.site-header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.7rem 1.1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}

.brand {
  color: var(--header-text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.05rem;
  margin-right: auto;
}

.brand:hover {
  color: #fff;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem;
}

.site-nav a,
.theme-toggle {
  color: var(--header-text);
  text-decoration: none;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border-radius: 8px;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.site-nav a:hover,
.theme-toggle:hover {
  background: var(--nav-hover);
  color: #fff;
}

.site-nav a.is-active {
  background: rgba(255, 255, 255, 0.16);
}

.nav-controls {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  margin-left: 0.6rem;
  padding-left: 0.75rem;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.nav-profile {
  position: relative;
}

.nav-profile-btn {
  color: var(--header-text);
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border-radius: 8px;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.nav-profile-btn:hover {
  background: var(--nav-hover);
  color: #fff;
}

.nav-profile-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 0.35rem);
  min-width: 160px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 20;
  overflow: hidden;
}

.nav-profile-menu.is-open {
  display: block;
}

.nav-profile-name {
  display: block;
  padding: 0.6rem 0.9rem 0.45rem;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.nav-profile-menu .nav-profile-logout {
  display: block;
  padding: 0.55rem 0.9rem;
  color: var(--danger);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  min-height: unset;
  border-radius: 0;
}

.nav-profile-menu .nav-profile-logout:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

.theme-toggle {
  margin-left: 0.25rem;
}

/* Bell notification */
.nav-bell {
  position: relative;
}

.nav-bell-btn {
  position: relative;
  color: var(--header-text);
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border-radius: 8px;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.nav-bell-btn:hover {
  background: var(--nav-hover);
  color: #fff;
}

.nav-bell-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: #ef4444;
  border-radius: 50%;
  border: 2px solid var(--header);
  pointer-events: none;
}

.nav-bell-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.35rem);
  width: 300px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 20;
  overflow: hidden;
}

.nav-bell-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.nav-bell-head a {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: none;
  letter-spacing: 0;
}

.nav-bell-item {
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--border);
}

.nav-bell-item:last-child {
  border-bottom: 0;
}

.nav-bell-item-title {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
  margin-bottom: 0.1rem;
}

.nav-bell-item-body {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.4;
}

.nav-bell-item-time {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

.nav-bell-empty {
  padding: 1rem 0.9rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.6rem 1.1rem 2.5rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 1.1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}

body.is-auth .site-header-inner {
  justify-content: space-between;
}

body.is-auth .site-main {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 3rem;
}

.auth-panel {
  width: 100%;
  max-width: 26rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1.6rem 1.5rem 1.4rem;
}

.auth-panel h1 {
  margin-bottom: 0.25rem;
}

.lede {
  color: var(--muted);
  margin-bottom: 1.2rem;
}

.alert {
  padding: 0.75rem 0.9rem;
  border-radius: 10px;
  margin: 0 0 1rem;
  border: 1px solid transparent;
}

.alert-success {
  background: var(--success-soft);
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 25%, transparent);
}

.alert-error {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 25%, transparent);
}

.alert-warn {
  background: var(--warn-soft);
  color: var(--warn);
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="search"],
input[type="url"],
input[type="file"],
select,
textarea {
  width: 100%;
  margin-top: 0.35rem;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
}

textarea {
  min-height: 6rem;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible,
a:focus-visible,
.theme-toggle:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.btn,
button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.45rem 1.05rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
}

[data-theme="dark"] .btn:not(.btn-secondary),
[data-theme="dark"] button[type="submit"]:not(.btn-secondary) {
  color: #102018;
}

.btn:hover,
button[type="submit"]:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-secondary,
a.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--border);
}

/* button[type="submit"] has specificity 11 (element + attribute), beating .btn-secondary (class = 10).
   button.btn-secondary also scores 11 but comes later in the file, so it wins the tie. */
button.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--border);
}

.btn-secondary:hover,
a.btn-secondary:hover,
button.btn-secondary:hover {
  background: var(--accent-soft);
  color: var(--accent-hover);
}

/* In dark mode [data-theme="dark"] button[type="submit"] sets color:#102018 (specificity 21).
   [data-theme="dark"] button.btn-secondary also scores 21 and comes later — it wins. */
[data-theme="dark"] button.btn-secondary {
  color: var(--accent);
  background: transparent;
}

[data-theme="dark"] button.btn-secondary:hover {
  background: var(--accent-soft);
  color: var(--accent-hover);
}

.page-header {
  margin-bottom: 1.2rem;
}

.page-header h1 {
  margin-bottom: 0.2rem;
}

.section {
  margin-top: 1.75rem;
}

.section > h2:first-child {
  margin-top: 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem 1.05rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin-bottom: 0.3rem;
}

.stat {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0.2rem 0 0.8rem;
}

.stat span {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
}

.progress {
  height: 10px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin: 0.6rem 0 1rem;
}

.progress > span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
}

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 0;
}

th, td {
  text-align: left;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 700;
  background: color-mix(in srgb, var(--surface) 70%, var(--bg));
}

tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover {
  background: color-mix(in srgb, var(--accent-soft) 55%, var(--surface));
}

.empty {
  color: var(--muted);
  margin: 0;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.6rem;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

.search-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.search-bar label {
  margin: 0;
  flex: 1;
  min-width: 200px;
}

.pagination {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .site-header-inner {
    padding: 0.65rem 0.85rem;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav a,
  .theme-toggle {
    min-height: 40px;
    padding: 0.2rem 0.55rem;
    font-size: 0.95rem;
  }

  .site-main {
    padding: 1.2rem 0.85rem 2rem;
  }

  body.is-auth .site-main {
    padding-top: 1.5rem;
  }
}