:root {
  --primary: #0B3D91;
  --primary-dark: #06285f;
  --primary-soft: #e8f0ff;
  --ink: #182033;
  --muted: #667085;
  --line: #dce4f2;
  --surface: #ffffff;
  --soft: #f5f7fb;
  --shadow: 0 18px 45px rgba(11, 61, 145, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--soft);
}

.app-body {
  background:
    linear-gradient(90deg, rgba(11, 61, 145, 0.92), rgba(6, 40, 95, 0.78)),
    url("../assets/background.jpg") center / cover fixed;
}

.hero-shell,
.page-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 32px 0;
}

.home-shell {
  min-height: 100vh;
  padding: 30px 0;
}

.home-workspace {
  display: grid;
  gap: 22px;
}

.home-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 24px;
  align-items: end;
  color: #fff;
}

.hero-panel {
  color: #fff;
}

.brand-logo {
  width: min(520px, 86vw);
  height: auto;
  padding: 14px 18px;
  border-radius: 8px;
  object-fit: contain;
  background: #fff;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.section-kicker {
  margin: 0 0 10px;
  color: #7da8ee;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.display-title {
  max-width: 640px;
  margin: 0;
  font-size: clamp(2.25rem, 6vw, 4.9rem);
  line-height: 0.98;
  font-weight: 900;
}

.hero-copy {
  max-width: 580px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.9);
}

.home-tagline {
  margin-top: 26px;
  font-size: clamp(1.35rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.18;
}

.home-session {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.session-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  font-weight: 800;
}

.plain-link {
  color: var(--primary);
  font-weight: 800;
  text-decoration: none;
}

.plain-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.today-panel {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(14px);
}

.today-panel span,
.today-panel strong,
.today-panel p {
  display: block;
}

.today-panel span {
  color: rgba(255, 255, 255, 0.72);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.74rem;
}

.today-panel strong {
  margin: 4px 0;
  font-size: 2rem;
  line-height: 1;
}

.today-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.home-disclaimer {
  max-width: 620px;
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid rgba(255, 255, 255, 0.65);
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.9rem;
  line-height: 1.5;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  max-width: 560px;
}

.home-action-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.home-action,
.resource-action {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 112px;
  padding: 18px;
  border: 1px solid rgba(220, 228, 242, 0.95);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border 180ms ease;
}

.home-action:hover,
.resource-action:hover {
  color: var(--ink);
  border-color: rgba(11, 61, 145, 0.35);
  box-shadow: 0 22px 46px rgba(11, 61, 145, 0.2);
  transform: translateY(-3px);
}

.home-action i,
.resource-action i {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 1.35rem;
  flex: 0 0 auto;
}

.home-action strong,
.home-action small,
.resource-action span {
  display: block;
}

.home-action strong {
  font-size: 1rem;
}

.home-action small {
  margin-top: 4px;
  color: var(--muted);
  line-height: 1.35;
}

.primary-action {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #1b6ad6);
}

.primary-action:hover {
  color: #fff;
}

.primary-action i {
  color: var(--primary);
  background: #fff;
}

.primary-action small {
  color: rgba(255, 255, 255, 0.82);
}

.home-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 18px;
}

.home-card {
  padding: 24px;
  border: 1px solid rgba(220, 228, 242, 0.95);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.resource-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.resource-action {
  min-height: 84px;
  min-width: 0;
  box-shadow: none;
}

.resource-action span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.attendance-date {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 6px 0 12px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 800;
}

.assistant-box {
  display: grid;
  gap: 12px;
}

.assistant-box > i {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 1.5rem;
}

.assistant-box p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.prep-steps {
  display: grid;
  gap: 10px;
}

.prep-steps span {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #f8fafc;
  font-weight: 700;
}

.prep-steps strong {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #fff;
  background: var(--primary);
  flex: 0 0 auto;
}

.home-footer-note {
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
  font-size: 0.92rem;
  line-height: 1.55;
}

.group-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 96px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 8px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 800;
  backdrop-filter: blur(14px);
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.group-button i {
  font-size: 2rem;
}

.group-button:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.22);
  transform: translateY(-3px);
}

.feature-board {
  display: grid;
  gap: 16px;
}

.feature-card,
.app-card,
.stat-card {
  border: 1px solid rgba(220, 228, 242, 0.95);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px;
}

.feature-card i {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 1.35rem;
  flex: 0 0 auto;
}

.feature-card h2,
.app-card h2,
.panel-heading h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
  font-weight: 800;
}

.feature-card p,
.app-card p,
.panel-heading p,
.muted-text {
  margin: 0;
  color: var(--muted);
}

.narrow-container {
  max-width: 680px;
}

.back-link {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 16px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

.lesson-actions {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  margin-bottom: 16px;
}

.print-button {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-weight: 800;
}

.print-shortcuts {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.lesson-action-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

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

.lesson-action-buttons .btn {
  flex: 1 1 260px;
}

.compact-actions .btn {
  flex: 0 1 auto;
}

.library-control-card,
.lesson-preview-panel,
.lesson-editor-panel {
  margin-bottom: 22px;
}

.lesson-preview-actions {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-end;
  margin-bottom: 18px;
}

.lesson-preview-actions h2 {
  margin: 0;
}

.library-print-page {
  margin: 0 auto;
}

.lesson-editor textarea[readonly],
.lesson-editor input[readonly] {
  background: #f8fafc;
  color: #475467;
}

.lesson-body {
  background:
    linear-gradient(90deg, rgba(11, 61, 145, 0.84), rgba(6, 40, 95, 0.66)),
    #eef3fb;
}

.lesson-book-page {
  position: relative;
  max-width: 1080px;
  padding: 34px;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(11, 61, 145, 0.08), transparent 44px),
    #fffdf8;
  box-shadow:
    0 28px 70px rgba(0, 0, 0, 0.22),
    inset 12px 0 0 rgba(11, 61, 145, 0.08);
}

.lesson-book-page::before {
  content: "";
  position: absolute;
  inset: 18px auto 18px 58px;
  width: 1px;
  background: rgba(11, 61, 145, 0.18);
}

.app-card {
  padding: 28px;
}

.attendance-card h1,
.class-header h1,
.admin-hero h1 {
  margin: 0 0 10px;
  font-weight: 900;
}

.card-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin-bottom: 18px;
  border-radius: 8px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 1.55rem;
}

.card-logo {
  display: block;
  width: min(340px, 78vw);
  height: auto;
  margin: 0 auto 18px;
}

.form-label {
  color: var(--ink);
  font-weight: 800;
}

.form-control,
.input-group-text {
  border-color: var(--line);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(11, 61, 145, 0.16);
}

.group-choice {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.choice-card {
  display: grid;
  place-items: center;
  min-height: 118px;
  padding: 18px;
  border: 2px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  cursor: pointer;
  transition: border 160ms ease, background 160ms ease, transform 160ms ease;
}

.choice-card i {
  color: var(--primary);
  font-size: 2rem;
}

.choice-card span {
  margin-top: 6px;
  font-weight: 800;
}

.btn-check:checked + .choice-card {
  border-color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-2px);
}

.btn-primary {
  border-color: var(--primary);
  background: var(--primary);
}

.btn-primary:hover {
  border-color: var(--primary-dark);
  background: var(--primary-dark);
}

.submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 58px;
  font-weight: 900;
}

.scanner-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

#qrReader {
  width: 100%;
}

.student-preview {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--primary-soft);
}

.student-preview i {
  color: var(--primary);
  font-size: 1.35rem;
}

.student-preview strong,
.student-preview span {
  display: block;
}

.student-preview span {
  color: var(--muted);
}

.name-search-results {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.student-result-button {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  text-align: left;
  transition: border 160ms ease, background 160ms ease;
}

.student-result-button:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.student-result-button strong,
.student-result-button span {
  display: block;
}

.student-result-button span {
  color: var(--muted);
  font-size: 0.9rem;
}

.student-result-button i {
  color: var(--primary);
}

.class-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  margin-bottom: 22px;
  padding: 30px;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(11, 61, 145, 0.96), rgba(27, 106, 214, 0.82)),
    rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(14px);
}

.lesson-logo {
  width: min(360px, 72vw);
  height: auto;
  margin-bottom: 18px;
  padding: 10px 14px;
  border-radius: 8px;
  background: #fff;
}

.class-header p {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
}

.class-badge {
  display: grid;
  place-items: center;
  min-width: 138px;
  min-height: 118px;
  border-radius: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 900;
}

.class-badge i {
  font-size: 2.25rem;
}

.lesson-layout,
.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr);
  gap: 20px;
}

.lesson-book-page .app-card {
  background: rgba(255, 255, 255, 0.9);
}

.lesson-card,
.lesson-side {
  min-height: 260px;
}

.lesson-card {
  position: relative;
  overflow: hidden;
}

.lesson-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(var(--primary), #38bdf8);
}

.resource-list {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.resource-list li {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-weight: 700;
}

.resource-list i {
  color: var(--primary);
}

.lesson-section {
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.lesson-section:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.lesson-section h2 {
  color: var(--primary);
}

.lesson-section p {
  font-size: 1.02rem;
  line-height: 1.72;
}

.dynamic-box {
  padding: 18px;
  border: 1px solid rgba(11, 61, 145, 0.18);
  border-radius: 8px;
  background: var(--primary-soft);
}

.visual-box {
  padding: 18px;
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: 8px;
  background: #f0fbff;
}

.question-list {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.lesson-disclaimer {
  margin-top: 22px;
  padding: 16px 18px;
  border: 1px solid rgba(11, 61, 145, 0.18);
  border-radius: 8px;
  color: #344054;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 30px rgba(11, 61, 145, 0.1);
  font-size: 0.92rem;
  line-height: 1.55;
}

.lesson-editor textarea {
  resize: vertical;
}

.admin-body {
  background: #f3f6fb;
}

.admin-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  color: #fff;
  background: var(--primary);
}

.admin-nav strong,
.admin-nav span {
  display: block;
}

.nav-logo {
  display: block;
  width: 220px;
  height: auto;
  margin-bottom: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  background: #fff;
}

.admin-nav span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.88rem;
}

.admin-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.admin-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto;
}

.admin-hero {
  margin-bottom: 20px;
  padding: 28px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #1b6ad6);
  box-shadow: var(--shadow);
}

.admin-hero p {
  margin: 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 20px;
}

.stat-card {
  display: grid;
  gap: 8px;
  padding: 22px;
}

.stat-card i {
  color: var(--primary);
  font-size: 1.6rem;
}

.stat-card span {
  color: var(--muted);
  font-weight: 700;
}

.stat-card strong {
  font-size: 2.1rem;
  line-height: 1;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.tool-stack {
  display: grid;
  gap: 12px;
}

.search-inline {
  max-width: 280px;
}

.qr-result {
  display: grid;
  place-items: center;
  gap: 8px;
  min-height: 280px;
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  text-align: center;
  background: #fff;
}

.qr-result.empty-state {
  color: var(--muted);
}

.qr-result.empty-state i {
  color: var(--primary);
  font-size: 3rem;
}

.qr-result strong,
.qr-result span {
  display: block;
}

.qr-holder {
  padding: 14px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(11, 61, 145, 0.1);
}

.qr-holder img,
.qr-holder canvas {
  display: block;
}

.admin-table {
  min-width: 680px;
}

.admin-table thead th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.inactive-student {
  opacity: 0.62;
}

.table-actions {
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
}

@media (max-width: 900px) {
  .hero-shell,
  .page-shell {
    align-items: flex-start;
  }

  .lesson-layout,
  .dashboard-grid,
  .stats-grid,
  .home-header,
  .home-content-grid {
    grid-template-columns: 1fr;
  }

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

  .home-session {
    justify-content: flex-start;
  }

  .resource-actions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-shell,
  .page-shell {
    padding: 22px 0;
  }

  .action-grid,
  .group-choice,
  .home-action-grid {
    grid-template-columns: 1fr;
  }

  .class-header,
  .admin-nav,
  .lesson-preview-actions,
  .lesson-actions,
  .panel-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .search-inline {
    max-width: none;
    width: 100%;
  }

  .lesson-book-page {
    width: calc(100% - 24px);
    padding: 20px;
  }

  .lesson-book-page::before {
    display: none;
  }

  .app-card,
  .class-header,
  .admin-hero {
    padding: 22px;
  }

  .display-title {
    font-size: 2.45rem;
  }
}

@media print {
  @page {
    margin: 0.55in;
  }

  body,
  .app-body {
    color: #111827;
    background: #fff !important;
  }

  .no-print,
  .admin-nav,
  .admin-hero,
  .library-control-card,
  .lesson-editor-panel,
  .lesson-preview-actions,
  .back-link,
  .print-button {
    display: none !important;
  }

  .page-shell,
  .admin-shell {
    display: block;
    min-height: 0;
    padding: 0;
  }

  .container {
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .lesson-book-page {
    max-width: none;
    padding: 0;
    border-radius: 0;
    background: #fff !important;
    box-shadow: none;
    inset: auto;
  }

  .lesson-book-page::before {
    display: none;
  }

  .class-header {
    display: block;
    margin: 0 0 18px;
    padding: 0 0 16px;
    border-bottom: 3px solid var(--primary);
    color: #111827;
    background: #fff !important;
    box-shadow: none;
  }

  .class-header p {
    color: #475467;
  }

  .lesson-logo {
    width: 220px;
    padding: 0;
    margin-bottom: 14px;
  }

  .lesson-layout {
    display: block;
  }

  .app-card,
  .lesson-card,
  .lesson-side {
    min-height: 0;
    margin: 0 0 14px;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .lesson-card::before {
    display: none;
  }

  .lesson-section,
  .dynamic-box,
  .visual-box {
    break-inside: avoid;
    page-break-inside: avoid;
    margin-bottom: 12px;
    padding: 0 0 10px;
    border: 0;
    border-bottom: 1px solid #d0d5dd;
    background: #fff;
  }

  .section-kicker {
    color: var(--primary);
    font-size: 0.72rem;
  }

  .lesson-section h2,
  .app-card h2 {
    color: #111827;
    font-size: 1.05rem;
  }

  .lesson-section p,
  .resource-list li,
  .question-list {
    color: #111827;
    font-size: 0.95rem;
    line-height: 1.5;
  }

  .resource-list,
  .question-list {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .lesson-disclaimer {
    break-inside: avoid;
    page-break-inside: avoid;
    margin-top: 18px;
    padding: 10px 0 0;
    border: 0;
    border-top: 1px solid #98a2b3;
    box-shadow: none;
    color: #344054;
    font-size: 0.78rem;
  }
}