:root {
  --font-sans: "Manrope", "Segoe UI", sans-serif;
  --font-serif: "Fraunces", Georgia, serif;
  --fs-display: clamp(2.2rem, 3.9vw, 3.55rem);
  --fs-h1: clamp(1.95rem, 3.1vw, 2.8rem);
  --fs-h2: clamp(1.56rem, 2.3vw, 2.08rem);
  --fs-h3: 1.14rem;
  --fs-title: 1rem;
  --fs-body: 0.97rem;
  --fs-small: 0.87rem;
  --fs-micro: 0.76rem;
  --line-tight: 1.18;
  --line-copy: 1.65;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-heavy: 800;

  --ink: #132238;
  --ink-soft: #38506a;
  --muted: #64788e;
  --accent: #0f766e;
  --accent-strong: #0b5c56;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --blue: #255fcb;
  --blue-soft: rgba(37, 95, 203, 0.12);
  --gold: #b78628;
  --gold-soft: rgba(183, 134, 40, 0.13);
  --rose: #b55269;
  --rose-soft: rgba(181, 82, 105, 0.12);
  --danger: #b42318;
  --danger-soft: rgba(180, 35, 24, 0.12);
  --success: #0c7a43;
  --success-soft: rgba(12, 122, 67, 0.12);

  --surface: #ffffff;
  --surface-alt: #f6f9fc;
  --surface-muted: #edf3f8;
  --surface-strong: #e6eef5;
  --line: rgba(19, 34, 56, 0.08);
  --line-strong: rgba(19, 34, 56, 0.13);
  --page-bg:
    radial-gradient(circle at top left, rgba(183, 134, 40, 0.12), transparent 32%),
    radial-gradient(circle at top right, rgba(37, 95, 203, 0.08), transparent 28%),
    linear-gradient(180deg, #f7fbff 0%, #edf3f8 100%);
  --header-bg: rgba(255, 255, 255, 0.92);
  --shadow-sm: 0 10px 22px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 38px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 28px 52px rgba(15, 23, 42, 0.12);
  --radius-xs: 12px;
  --radius-sm: 16px;
  --radius-md: 20px;
  --radius-lg: 24px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.8rem;
  --space-4: 1.1rem;
  --space-5: 1.4rem;
  --space-6: 1.75rem;
  --space-7: 2.05rem;
  --space-8: 2.4rem;
  --space-10: 2.8rem;
  --toggle-bg: rgba(19, 34, 56, 0.08);
}

:root[data-theme='dark'] {
  --ink: #ebf3f8;
  --ink-soft: #cad8e4;
  --muted: #9db0c0;
  --accent: #40b7ad;
  --accent-strong: #79d7ce;
  --accent-soft: rgba(64, 183, 173, 0.16);
  --blue: #7aa6ff;
  --blue-soft: rgba(122, 166, 255, 0.16);
  --gold: #d5ab57;
  --gold-soft: rgba(213, 171, 87, 0.18);
  --rose: #dc8ca1;
  --rose-soft: rgba(220, 140, 161, 0.18);
  --danger: #ff8c7f;
  --danger-soft: rgba(255, 140, 127, 0.18);
  --success: #50d58f;
  --success-soft: rgba(80, 213, 143, 0.18);

  --surface: #13202d;
  --surface-alt: #182836;
  --surface-muted: #101b26;
  --surface-strong: #213445;
  --line: rgba(235, 243, 248, 0.08);
  --line-strong: rgba(235, 243, 248, 0.14);
  --page-bg:
    radial-gradient(circle at top left, rgba(64, 183, 173, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(213, 171, 87, 0.07), transparent 24%),
    linear-gradient(180deg, #09131b 0%, #0f1922 100%);
  --header-bg: rgba(19, 32, 45, 0.92);
  --shadow-sm: 0 10px 24px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 18px 40px rgba(0, 0, 0, 0.24);
  --shadow-lg: 0 28px 58px rgba(0, 0, 0, 0.3);
  --toggle-bg: rgba(235, 243, 248, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--line-copy);
  transition: background 0.24s ease, color 0.24s ease;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent-strong);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-serif);
  line-height: var(--line-tight);
  letter-spacing: -0.02em;
}

h1,
.page-title {
  font-size: var(--fs-display);
}

h2 {
  font-size: var(--fs-h2);
}

h3 {
  font-size: var(--fs-h3);
}

p {
  margin: 0;
}

strong {
  font-weight: var(--weight-bold);
}

code {
  font-family: Consolas, "Courier New", monospace;
}

.muted,
.stat-label,
.record-updated,
.audit-meta,
.brand-tagline,
.breadcrumbs,
.table th,
.theme-toggle-label {
  color: var(--muted);
}

.eyebrow,
.panel-label,
.metric-label {
  display: inline-block;
  font-size: var(--fs-micro);
  font-weight: var(--weight-heavy);
  line-height: 1.3;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow,
.panel-label {
  color: var(--accent);
}

.inline {
  display: inline;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: var(--space-8) 0 92px;
}

.page-stack {
  display: grid;
  gap: var(--space-7);
}

.page-header {
  display: grid;
  gap: var(--space-3);
  max-width: 72ch;
}

.app-shell {
  display: grid;
  gap: var(--space-5);
}

.system-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0.95rem 24px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, var(--accent-soft), rgba(183, 134, 40, 0.1));
}

.system-status-copy {
  display: grid;
  gap: 2px;
}

.system-status-copy strong {
  font-size: var(--fs-small);
}

.system-status-pills,
.dashboard-pills,
.hero-actions,
.actions,
.chip-group,
.nav,
.page-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: 20px 24px;
  background: var(--header-bg);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 0;
}

.brand-logo,
.brand-mark {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  flex: 0 0 auto;
}

.brand-logo {
  object-fit: cover;
  background: #fff;
  border: 1px solid var(--line);
}

.brand-mark {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #fff;
  font-family: var(--font-serif);
  font-weight: var(--weight-heavy);
  box-shadow: var(--shadow-sm);
}

.brand-name {
  font-size: 1rem;
  font-weight: var(--weight-heavy);
}

.brand-tagline {
  font-size: var(--fs-small);
}

.nav-link,
.link-button,
.back-button,
.button,
.lesson-toggle,
.module-nav-link,
.submodule-link,
.chip,
.theme-toggle,
.nav-arrow,
.chatbot-launcher {
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.22s ease, transform 0.22s ease, opacity 0.22s ease;
}

.nav-link,
.link-button,
.back-button,
.button,
.lesson-toggle,
.theme-toggle {
  min-height: 46px;
  border-radius: 14px;
  font-size: 0.94rem;
  font-weight: var(--weight-bold);
}

.nav-link,
.link-button,
.back-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--accent-strong);
  box-shadow: none;
}

.nav-link:hover,
.link-button:hover,
.back-button:hover,
.nav-link:focus-visible,
.link-button:focus-visible,
.back-button:focus-visible {
  background: var(--surface-alt);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: 148px;
  padding: 0 20px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--accent), #148d83);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.button:hover,
.button:focus-visible,
.chatbot-launcher:hover,
.chatbot-launcher:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.button.secondary {
  background: var(--surface);
  color: var(--accent-strong);
  border-color: var(--line);
  box-shadow: none;
}

.actions .button:first-child:not(.secondary):not(.danger) {
  box-shadow: var(--shadow-md);
}

.button.danger {
  background: linear-gradient(135deg, var(--danger), #d34134);
  color: #fff;
}

.button.is-loading,
.button[data-loading='true'],
.link-button.is-loading,
.link-button[data-loading='true'] {
  pointer-events: none;
  opacity: 0.76;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}

.theme-toggle-track {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: 999px;
  background: var(--toggle-bg);
}

.theme-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--accent));
  transition: transform 0.22s ease;
}

:root[data-theme='dark'] .theme-toggle-thumb {
  transform: translateX(18px);
}

.module-nav,
.submodule-nav {
  display: flex;
  gap: 0.85rem;
  padding: 0 24px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.module-nav-link,
.submodule-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 52px;
  padding: 1rem 1.05rem;
  white-space: nowrap;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  color: var(--ink-soft);
}

.module-nav-link:hover,
.submodule-link:hover,
.module-nav-link:focus-visible,
.submodule-link:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.module-nav-link.is-active,
.submodule-link.is-active {
  border-color: rgba(15, 118, 110, 0.24);
  background: linear-gradient(135deg, var(--accent-soft), var(--blue-soft));
  color: var(--ink);
}

.module-nav-icon,
.action-icon {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: var(--fs-micro);
  font-weight: var(--weight-heavy);
  flex: 0 0 32px;
}

.page-shell {
  padding-top: var(--space-3);
}

.page-chrome {
  margin-bottom: var(--space-4);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  font-size: var(--fs-small);
}

.breadcrumbs a {
  color: var(--accent-strong);
}

.breadcrumb-sep {
  opacity: 0.55;
}

.dashboard-shell,
.dashboard-section,
.hub-panel,
.form,
.list,
.detail-list,
.notification-list,
.progress-list,
.lesson-list,
.timeline-list,
.forum-list,
.forum-replies,
.document-list,
.audit-list {
  display: grid;
  gap: var(--space-6);
}

.dashboard-hero,
.hero,
.split-card,
.student-hub-grid,
.grid,
.grid-2,
.grid-3,
.grid-4,
.metrics-grid,
.action-grid,
.feature-grid,
.curriculum-grid,
.dashboard-support-grid,
.trust-grid,
.staff-grid {
  display: grid;
  gap: var(--space-6);
}

.dashboard-hero,
.hero {
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.9fr);
  align-items: stretch;
}

.grid,
.action-grid,
.feature-grid,
.curriculum-grid,
.dashboard-support-grid,
.trust-grid,
.staff-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.metrics-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-2,
.student-hub-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.section-header > div,
.progress-copy,
.progress-meta,
.audit-meta,
.notification-item,
.timeline-date,
.timeline-item > div,
.system-status-copy {
  min-width: 0;
}

.section-header p,
.dashboard-intro,
.notification-item p,
.document-item p,
.payment-highlight p,
.timeline-item p,
.action-card p {
  max-width: 60ch;
}

.page-title,
.dashboard-copy h1,
.dashboard-panel h3,
.section-header h2,
.card h2,
.card h3 {
  text-wrap: balance;
}

.card,
.form-card,
.auth-card,
.dashboard-copy,
.dashboard-panel,
.metric-card,
.action-card,
.hero-card,
.progress-item,
.lesson-item,
.timeline-item,
.payment-highlight,
.notification-item,
.forum-thread,
.forum-reply,
.summary-chip,
.document-item,
.audit-item,
.streak-card,
.empty-state,
.info-banner {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.card,
.form-card,
.auth-card,
.dashboard-copy,
.dashboard-panel,
.metric-card,
.hero-card {
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.card > * + *,
.form-card > * + *,
.auth-card > * + *,
.dashboard-copy > * + *,
.dashboard-panel > * + *,
.hero-card > * + * {
  margin-top: var(--space-4);
}

.auth-card {
  max-width: 520px;
  margin: 0 auto;
}

.auth-card .form {
  margin-top: var(--space-5);
}

.action-card,
.progress-item,
.lesson-item,
.timeline-item,
.payment-highlight,
.notification-item,
.forum-thread,
.forum-reply,
.summary-chip,
.document-item,
.audit-item,
.streak-card,
.empty-state {
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.dashboard-copy {
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(37, 95, 203, 0.04)), var(--surface);
}

.dashboard-panel,
.info-banner {
  background: linear-gradient(180deg, rgba(183, 134, 40, 0.08), transparent 74%), var(--surface);
}

.dashboard-intro {
  font-size: 1rem;
  color: var(--ink-soft);
}

.metric-card {
  gap: var(--space-3);
  align-content: start;
}

.metric-card h2 {
  font-size: clamp(1.9rem, 2.8vw, 2.5rem);
}

.tone-teal {
  background: linear-gradient(180deg, var(--accent-soft), transparent 70%), var(--surface);
}

.tone-blue {
  background: linear-gradient(180deg, var(--blue-soft), transparent 70%), var(--surface);
}

.tone-gold {
  background: linear-gradient(180deg, var(--gold-soft), transparent 70%), var(--surface);
}

.tone-rose {
  background: linear-gradient(180deg, var(--rose-soft), transparent 70%), var(--surface);
}

.tone-teal-soft { background: linear-gradient(180deg, var(--accent-soft), transparent 90%), var(--surface); }
.tone-blue-soft { background: linear-gradient(180deg, var(--blue-soft), transparent 90%), var(--surface); }
.tone-gold-soft { background: linear-gradient(180deg, var(--gold-soft), transparent 90%), var(--surface); }
.tone-rose-soft { background: linear-gradient(180deg, var(--rose-soft), transparent 90%), var(--surface); }

.action-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3) var(--space-4);
  align-items: start;
}

.action-card:hover,
.action-card:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.action-arrow {
  grid-column: 2;
  color: var(--accent-strong);
  font-size: var(--fs-small);
  font-weight: var(--weight-bold);
}

.support-card {
  background: linear-gradient(180deg, var(--blue-soft), transparent 70%), var(--surface);
}

.progress-item,
.payment-highlight,
.notification-item,
.forum-thread,
.forum-reply,
.document-item,
.audit-item,
.streak-card {
  background: var(--surface-alt);
}

.lesson-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-4);
}

.progress-meta {
  display: grid;
  gap: var(--space-3);
}

.progress-meta span {
  color: var(--accent-strong);
  font-weight: var(--weight-heavy);
}

.progress-bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: var(--surface-strong);
  overflow: hidden;
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--blue));
}

.timeline-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--space-4);
  align-items: center;
}

.timeline-date {
  display: grid;
  place-items: center;
  gap: 2px;
  min-height: 72px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent-soft), var(--gold-soft));
  text-align: center;
}

.timeline-date strong {
  font-size: 1.6rem;
}

.payment-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.summary-chip {
  min-height: 92px;
  align-content: center;
  gap: 4px;
}

.summary-chip span {
  color: var(--muted);
  font-weight: var(--weight-semibold);
}

.summary-chip strong {
  font-size: 1.65rem;
  line-height: 1;
}

.status-pill,
.verification-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: var(--fs-small);
  font-weight: var(--weight-bold);
  white-space: nowrap;
}

.status-pill.muted-pill {
  background: transparent;
  color: var(--muted);
  border-color: var(--line);
}

.status-pill.is-trust,
.verification-badge {
  background: var(--success-soft);
  color: var(--success);
  border-color: rgba(12, 122, 67, 0.2);
}

.form {
  margin-top: var(--space-3);
}

label {
  display: grid;
  gap: 0.45rem;
  font-size: var(--fs-small);
  font-weight: var(--weight-bold);
}

input,
textarea,
select {
  width: 100%;
  min-height: 48px;
  padding: 13px 15px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  color: var(--ink);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: rgba(15, 118, 110, 0.32);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.compact-form {
  margin-top: 0;
}

.chip-group {
  gap: 0.65rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  color: var(--ink-soft);
  font-size: var(--fs-small);
  font-weight: var(--weight-semibold);
}

.chip:hover {
  border-color: var(--line-strong);
}

.chip input {
  width: auto;
  min-height: auto;
  margin: 0;
  accent-color: var(--accent);
}

.table-wrapper,
.table {
  overflow-x: auto;
}

.table-wrapper {
  border-radius: var(--radius-lg);
}

.table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: none;
}

.table th,
.table td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.table th {
  background: var(--surface-alt);
  font-size: var(--fs-micro);
  font-weight: var(--weight-heavy);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.table td strong {
  color: var(--ink);
}

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

.empty-state {
  text-align: left;
  place-items: start;
  gap: 0.55rem;
  background: linear-gradient(180deg, rgba(246, 249, 252, 0.88), var(--surface));
}

.empty-state h3 {
  font-size: 1.05rem;
}

.empty-state-full {
  grid-column: 1 / -1;
}

.hero-note,
.support-note {
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  border: 1px solid rgba(19, 34, 56, 0.05);
}

.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(180, 35, 24, 0.18);
  background: var(--danger-soft);
  color: var(--danger);
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.detail-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.detail-list.compact {
  gap: 0.55rem;
}

.lesson-toggle {
  padding: 0 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--accent-strong);
}

.lesson-toggle.is-complete {
  background: var(--success-soft);
  color: var(--success);
  border-color: rgba(12, 122, 67, 0.2);
}

.streak-card {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: var(--space-5);
  align-items: center;
}

.streak-ring {
  min-height: 118px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  background:
    radial-gradient(circle at center, var(--surface) 48%, transparent 49%),
    conic-gradient(var(--accent) 0deg, var(--blue) 220deg, var(--gold) 360deg);
}

.streak-ring strong {
  display: block;
  font-size: 2rem;
  line-height: 1;
}

.streak-ring span {
  font-size: var(--fs-micro);
  font-weight: var(--weight-heavy);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.info-banner code {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--surface-alt);
}

.document-item,
.audit-item,
.staff-card,
.timeline-item,
.forum-thread-head {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: flex-start;
}

.staff-card {
  display: grid;
  grid-template-columns: 84px 1fr;
  align-items: start;
}

.staff-avatar {
  width: 84px;
  height: 84px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  color: #fff;
  display: grid;
  place-items: center;
  overflow: hidden;
  font-size: 1.4rem;
  font-weight: var(--weight-bold);
}

.staff-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.accreditation-card {
  border-top: 4px solid var(--gold);
}

.table-wrapper table {
  width: 100%;
}

.chatbot {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 50;
}

.chatbot-launcher {
  min-height: 48px;
  padding: 0 18px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #148d83);
  color: #fff;
  box-shadow: var(--shadow-lg);
}

.chatbot-panel {
  position: absolute;
  right: 0;
  bottom: 60px;
  width: 340px;
  max-height: 540px;
  display: none;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.chatbot-panel.open {
  display: flex;
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  background: linear-gradient(135deg, #0a4d48, #164e9f);
  color: #fff;
}

.chatbot-close {
  border: none;
  background: transparent;
  color: inherit;
  font-size: 1.1rem;
}

.chatbot-body {
  display: grid;
  gap: 0.75rem;
  padding: 16px 18px;
  overflow-y: auto;
  background: var(--surface-muted);
}

.chatbot-message {
  display: grid;
  gap: 0.35rem;
}

.chatbot-message.user {
  justify-items: end;
}

.chatbot-bubble {
  max-width: 240px;
  padding: 10px 12px;
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  word-break: break-word;
}

.chatbot-message.user .chatbot-bubble {
  background: var(--accent-soft);
}

.chatbot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chatbot-link {
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--gold-soft);
  color: var(--accent-strong);
  font-size: var(--fs-small);
}

.chatbot-form {
  display: flex;
  gap: 8px;
  padding: 16px 18px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.chatbot-form input {
  flex: 1;
  border-radius: 999px;
}

.site-footer {
  padding: 24px 20px 40px;
  text-align: center;
  color: var(--muted);
  font-size: var(--fs-small);
}

.official-footer {
  border-top: 1px solid var(--line);
}

.assignment-card {
  display: grid;
  gap: var(--space-6);
}

.assignment-meta {
  display: grid;
  gap: var(--space-2);
}

.assignment-body {
  color: var(--ink-soft);
}

.data-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-4);
}

.data-point {
  display: grid;
  gap: 4px;
  padding: var(--space-5);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(19, 34, 56, 0.05);
  background: var(--surface-alt);
}

.data-point span {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: var(--weight-heavy);
}

.data-point strong {
  font-size: 1.15rem;
  color: var(--ink);
}

.table-card {
  display: grid;
  gap: var(--space-5);
}

.table-card .section-header,
.form-card .section-header,
.card .section-header {
  padding-bottom: var(--space-2);
}

.button-row-tight {
  gap: var(--space-3);
}

@media (max-width: 1080px) {
  .metrics-grid,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3,
  .dashboard-hero,
  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 840px) {
  .site-header,
  .system-status-bar {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-utility {
    width: 100%;
    justify-content: space-between;
  }

  .module-nav,
  .submodule-nav {
    padding-left: 16px;
    padding-right: 16px;
  }

  .grid-2,
  .student-hub-grid,
  .payment-summary,
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
    padding-bottom: 104px;
  }

  .brand {
    align-items: flex-start;
  }

  .theme-toggle-label {
    display: none;
  }

  .section-header,
  .actions,
  .chatbot-form,
  .system-status-bar,
  .document-item,
  .audit-item,
  .timeline-item,
  .forum-thread-head,
  .lesson-item,
  .streak-card,
  .staff-card {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .data-summary {
    grid-template-columns: 1fr;
  }

  .button,
  .link-button,
  .back-button,
  .nav-link,
  .actions .button,
  .actions .link-button,
  .lesson-toggle,
  .chatbot-launcher {
    width: 100%;
    min-width: 0;
  }

  .card,
  .form-card,
  .auth-card,
  .dashboard-copy,
  .dashboard-panel,
  .metric-card,
  .hero-card {
    padding: var(--space-7);
  }

  .chatbot {
    left: 12px;
    right: 12px;
    bottom: 12px;
  }

  .chatbot-panel {
    left: 0;
    right: 0;
    width: 100%;
    max-height: 62vh;
  }
}

@media (max-width: 420px) {
  .container {
    width: min(100% - 20px, 1180px);
  }

  .site-header,
  .system-status-bar,
  .module-nav,
  .submodule-nav {
    padding-left: 12px;
    padding-right: 12px;
  }

  .brand-logo,
  .brand-mark {
    width: 46px;
    height: 46px;
  }

  .module-nav-link,
  .submodule-link {
    min-height: 46px;
    padding: 0.8rem 0.9rem;
  }
}