/* ==========================================================================
   Brightleaf School Portal — Design Tokens
   Palette: chalkboard green + library gold, warm paper surfaces
   Type: Fraunces (display) + Inter (body/UI)
   ========================================================================== */

:root {
  /* Color */
  --ink: #17241f;
  --ink-soft: #3a4a43;
  --forest: #1b4d3e;
  --forest-deep: #12332a;
  --forest-tint: #e6efe9;
  --gold: #d79a2c;
  --gold-deep: #a8721a;
  --gold-tint: #f8ead0;
  --paper: #f7f3ea;
  --paper-raised: #fffdf8;
  --line: #ded5c0;
  --line-soft: #ece5d4;
  --red: #a3402f;
  --white: #ffffff;

  /* Type */
  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Scale */
  --radius-s: 4px;
  --radius-m: 10px;
  --radius-l: 18px;
  --shadow-card: 0 1px 2px rgba(23, 36, 31, 0.06), 0 8px 24px -12px rgba(23, 36, 31, 0.18);
  --shadow-pop: 0 20px 60px -20px rgba(23, 36, 31, 0.35);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--forest-deep);
  margin: 0 0 0.5em;
  line-height: 1.15;
  font-weight: 600;
}

h1 { font-size: clamp(2.1rem, 4.2vw, 3.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.25rem); letter-spacing: -0.005em; }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; max-width: 62ch; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--forest);
  color: var(--white);
}
.btn-primary:hover { background: var(--forest-deep); }

.btn-gold {
  background: var(--gold);
  color: var(--forest-deep);
}
.btn-gold:hover { background: var(--gold-deep); color: var(--white); }

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--forest); color: var(--forest); }

.btn-small { padding: 8px 14px; font-size: 0.85rem; }
.btn-danger { background: transparent; border-color: var(--red); color: var(--red); }
.btn-danger:hover { background: var(--red); color: var(--white); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Site Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(247, 243, 234, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--forest-deep);
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-s);
  background: var(--forest);
  color: var(--gold-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.brand small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.68rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--forest-deep);
  border-color: var(--gold);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }
.site-header.menu-open .nav-toggle span { background: transparent; }
.site-header.menu-open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
.site-header.menu-open .nav-toggle span::after { top: 0; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow-line {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gold-deep);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 18px;
}
.eyebrow-line::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--gold-deep);
  display: inline-block;
}
.hero-lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 46ch;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 44px;
  flex-wrap: wrap;
}
.hero-stats div strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--forest-deep);
}
.hero-stats div span {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* Fanned document stack visual */
.doc-stack {
  position: relative;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.doc-card {
  position: absolute;
  width: 230px;
  height: 300px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  padding: 22px 20px;
}
.doc-card .doc-tab {
  width: 34px;
  height: 6px;
  border-radius: 4px;
  background: var(--gold);
  margin-bottom: 16px;
}
.doc-card .doc-line { height: 8px; background: var(--line-soft); border-radius: 3px; margin-bottom: 10px; }
.doc-card .doc-line.short { width: 60%; }
.doc-card:nth-child(1) { transform: rotate(-9deg) translate(-70px, 10px); z-index: 1; }
.doc-card:nth-child(2) { transform: rotate(4deg) translate(60px, -6px); z-index: 2; }
.doc-card:nth-child(3) {
  transform: rotate(-2deg);
  z-index: 3;
  background: var(--forest);
  border-color: var(--forest-deep);
}
.doc-card:nth-child(3) .doc-line { background: rgba(255,255,255,0.18); }
.doc-card:nth-child(3) .doc-tab { background: var(--gold-tint); }
.doc-card .doc-icon {
  margin-top: 20px;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--forest-tint);
  color: var(--forest);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.doc-card:nth-child(3) .doc-icon { background: rgba(255,255,255,0.14); color: var(--gold-tint); }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--forest-tint); }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}
.section-head p { margin: 0; color: var(--ink-soft); }

/* Feature list — subject-indexed, not identical SaaS cards */
.subject-index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}
.subject-row {
  display: flex;
  gap: 20px;
  padding: 26px 4px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding-right: 24px;
}
.subject-row:nth-child(3n) { border-right: none; }
.subject-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--gold-deep);
  min-width: 44px;
}
.subject-row h3 { margin-bottom: 6px; }
.subject-row p { font-size: 0.92rem; color: var(--ink-soft); margin: 0; }

/* ---------- Resource cards (library catalog feel) ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 16px;
  margin-bottom: 32px;
}
.filter-bar input[type="search"] {
  flex: 1 1 220px;
  min-width: 180px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 10px 14px;
  font-size: 0.95rem;
  background: var(--paper);
}
.filter-bar select {
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 10px 12px;
  background: var(--paper);
  font-size: 0.9rem;
  color: var(--ink);
}
.filter-bar input:focus, .filter-bar select:focus { border-color: var(--forest); }

.shelf {
  margin-bottom: 40px;
}
.shelf-label {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--forest);
}
.shelf-label h3 { margin: 0; color: var(--forest-deep); }
.shelf-label span { font-size: 0.85rem; color: var(--ink-soft); }

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}
.resource-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-s);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}
.resource-card:hover { box-shadow: var(--shadow-card); }
.resource-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--forest);
}
.pill {
  background: var(--forest-tint);
  color: var(--forest-deep);
  padding: 3px 10px;
  border-radius: 30px;
}
.pill-grade { background: var(--gold-tint); color: var(--gold-deep); }
.resource-card h4 { margin: 0; font-family: var(--font-display); font-size: 1.15rem; color: var(--ink); }
.resource-desc { font-size: 0.88rem; color: var(--ink-soft); margin: 0; flex: 1; }
.resource-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
  margin-top: 4px;
}
.resource-actions { display: flex; gap: 8px; margin-top: 6px; }
.resource-actions .btn { flex: 1; justify-content: center; }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--ink-soft);
  border: 1px dashed var(--line);
  border-radius: var(--radius-m);
  background: var(--paper-raised);
}
.empty-state h3 { color: var(--ink); }

/* ---------- Reader Modal ---------- */
.reader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 26, 22, 0.75);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
}
.reader-overlay.open { display: flex; animation: fadeIn 0.2s ease; }
.reader-frame {
  background: var(--paper-raised);
  width: min(1000px, 100%);
  height: min(88vh, 900px);
  border-radius: var(--radius-l);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-pop);
  animation: popIn 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reader-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--forest);
  color: var(--white);
  gap: 12px;
}
.reader-bar h4 { color: var(--white); margin: 0; font-size: 1rem; }
.reader-bar-meta { font-size: 0.78rem; color: rgba(255,255,255,0.75); }
.reader-bar-actions { display: flex; gap: 8px; align-items: center; }
.icon-btn {
  background: rgba(255,255,255,0.12);
  border: none;
  color: var(--white);
  width: 34px; height: 34px;
  border-radius: var(--radius-s);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
}
.icon-btn:hover { background: rgba(255,255,255,0.24); }
.reader-body { flex: 1; background: #4a5750; }
.reader-body iframe { width: 100%; height: 100%; border: none; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--forest-deep);
  color: rgba(255,255,255,0.82);
  padding: 56px 0 28px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.site-footer h4 { color: var(--gold-tint); font-size: 0.9rem; letter-spacing: 0.02em; margin-bottom: 16px; }
.site-footer .brand { color: var(--white); }
.site-footer p { color: rgba(255,255,255,0.68); font-size: 0.92rem; }
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255,255,255,0.72); font-size: 0.9rem; }
.footer-links a:hover { color: var(--gold-tint); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Admin: layout ---------- */
.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 250px;
  background: var(--forest-deep);
  color: rgba(255,255,255,0.85);
  flex-shrink: 0;
  padding: 26px 18px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  transition: width 0.28s cubic-bezier(0.4, 0, 0.2, 1),
              padding 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}
.admin-sidebar .brand { color: var(--white); margin-bottom: 36px; padding: 0 6px; white-space: nowrap; }
.admin-sidebar .brand-mark { background: var(--gold); color: var(--forest-deep); transition: transform 0.28s ease; }
.admin-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.admin-nav button {
  display: flex;
  align-items: center;
  gap: 12px;
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  text-align: left;
  padding: 12px 14px;
  border-radius: var(--radius-s);
  font-size: 0.92rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.admin-nav button:hover { background: rgba(255,255,255,0.06); color: var(--white); transform: translateX(2px); }
.admin-nav button.active { background: var(--gold); color: var(--forest-deep); font-weight: 600; }
.admin-nav button .label {
  opacity: 1;
  transition: opacity 0.18s ease;
}
.admin-sidebar-foot {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 16px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  white-space: nowrap;
  transition: opacity 0.18s ease;
}

/* Collapsed (desktop) state — icon rail only, animated width */
.admin-sidebar.collapsed { width: 76px; padding-left: 14px; padding-right: 14px; }
.admin-sidebar.collapsed .brand span:not(.brand-mark),
.admin-sidebar.collapsed .admin-nav button .label,
.admin-sidebar.collapsed .admin-sidebar-foot {
  opacity: 0;
  width: 0;
  overflow: hidden;
  pointer-events: none;
}
.admin-sidebar.collapsed .admin-nav button { justify-content: center; padding: 12px 0; }
.admin-sidebar.collapsed .brand-mark { transform: scale(1.05); }

.admin-main { flex: 1; min-width: 0; background: var(--paper); }
.admin-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 36px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-raised);
  position: sticky;
  top: 0;
  z-index: 10;
}
.admin-topbar-left { display: flex; align-items: center; gap: 16px; }
.admin-content { padding: 36px; max-width: 1100px; }
.admin-view { display: none; }
.admin-view.active {
  display: block;
  animation: fadeInUp 0.32s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Sidebar toggle button — animates hamburger into an arrow/X */
.sidebar-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-s);
  border: 1px solid var(--line);
  background: var(--paper-raised);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.sidebar-toggle-btn:hover { border-color: var(--forest); background: var(--forest-tint); }
.sidebar-toggle-btn span {
  position: relative;
  width: 18px;
  height: 2px;
  background: var(--ink);
  display: block;
  transition: transform 0.25s ease, background 0.25s ease;
}
.sidebar-toggle-btn span::before,
.sidebar-toggle-btn span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, top 0.25s ease, opacity 0.2s ease;
}
.sidebar-toggle-btn span::before { top: -6px; }
.sidebar-toggle-btn span::after { top: 6px; }
.sidebar-toggle-btn.is-x span { background: transparent; }
.sidebar-toggle-btn.is-x span::before { top: 0; transform: rotate(45deg); }
.sidebar-toggle-btn.is-x span::after { top: 0; transform: rotate(-45deg); }

/* Mobile off-canvas backdrop */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(18, 26, 22, 0.5);
  opacity: 0;
  pointer-events: none;
  z-index: 55;
  transition: opacity 0.25s ease;
}
.sidebar-backdrop.show { opacity: 1; pointer-events: auto; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: fadeInUp 0.4s both;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.stat-card:nth-child(1) { animation-delay: 0.02s; }
.stat-card:nth-child(2) { animation-delay: 0.08s; }
.stat-card:nth-child(3) { animation-delay: 0.14s; }
.stat-card:nth-child(4) { animation-delay: 0.2s; }
.stat-card span { font-size: 0.8rem; color: var(--ink-soft); }
.stat-card strong { display: block; font-family: var(--font-display); font-size: 2rem; color: var(--forest-deep); margin-top: 6px; }

.panel {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);

  padding: 28px;
  margin-bottom: 28px;
}
.panel h3 { margin-bottom: 4px; }
.panel-hint { color: var(--ink-soft); font-size: 0.88rem; margin-bottom: 22px; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 0.85rem; font-weight: 600; color: var(--ink); }
.form-field input,
.form-field select,
.form-field textarea {
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 11px 13px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--paper);
  color: var(--ink);
}
.form-field textarea { resize: vertical; min-height: 80px; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--forest); }
.field-error { color: var(--red); font-size: 0.78rem; min-height: 1em; }

.dropzone {
  border: 2px dashed var(--line);
  border-radius: var(--radius-m);
  padding: 34px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  background: var(--paper);
}
.dropzone:hover, .dropzone.drag-over { border-color: var(--forest); background: var(--forest-tint); }
.dropzone strong { display: block; margin-bottom: 4px; color: var(--ink); }
.dropzone span { font-size: 0.82rem; color: var(--ink-soft); }
.dropzone .dz-icon { font-size: 1.8rem; margin-bottom: 10px; color: var(--forest); }
.file-chosen {
  display: none;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 12px 16px;
  margin-top: 12px;
  background: var(--forest-tint);
  font-size: 0.9rem;
}
.file-chosen.show { display: flex; }

.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table th {
  text-align: left;
  font-size: 0.75rem;
  text-transform: none;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  font-weight: 600;
}
.data-table td { padding: 14px 12px; border-bottom: 1px solid var(--line-soft); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.row-actions { display: flex; gap: 8px; }
.title-cell strong { display: block; color: var(--ink); }
.title-cell span { font-size: 0.78rem; color: var(--ink-soft); }

/* Login gate */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--forest-deep);
  padding: 24px;
}
.login-card {
  background: var(--paper-raised);
  border-radius: var(--radius-l);
  padding: 44px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-pop);
}
.login-card .brand { justify-content: center; margin-bottom: 8px; }
.login-card p.sub { text-align: center; color: var(--ink-soft); margin-bottom: 28px; }
.login-hint {
  margin-top: 18px;
  font-size: 0.78rem;
  color: var(--ink-soft);
  background: var(--forest-tint);
  border-radius: var(--radius-s);
  padding: 10px 12px;
}

/* Toast */
.toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 200;
}
.toast {
  background: var(--forest-deep);
  color: var(--white);
  padding: 14px 18px;
  border-radius: var(--radius-s);
  font-size: 0.88rem;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toast-in 0.2s ease;
  max-width: 320px;
}
.toast.error { background: var(--red); }
@keyframes toast-in {
  from { transform: translateY(10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ---------- Keyframe library ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.94); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Card entrance + hover motion, applied wherever cards render */
.resource-card, .subject-row, .doc-card {
  animation: fadeInUp 0.4s both;
}
.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.resource-grid .resource-card:nth-child(1) { animation-delay: 0.02s; }
.resource-grid .resource-card:nth-child(2) { animation-delay: 0.07s; }
.resource-grid .resource-card:nth-child(3) { animation-delay: 0.12s; }
.resource-grid .resource-card:nth-child(4) { animation-delay: 0.17s; }
.resource-grid .resource-card:nth-child(5) { animation-delay: 0.22s; }
.resource-grid .resource-card:nth-child(6) { animation-delay: 0.27s; }

.btn { transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px) scale(0.98); }

.data-table tr { transition: background 0.15s ease; }
.data-table tr:hover { background: var(--forest-tint); }

/* Confirm dialog */
.confirm-overlay {
  position: fixed; inset: 0; background: rgba(18,26,22,0.6);
  display: none; align-items: center; justify-content: center; z-index: 150; padding: 20px;
  animation: fadeIn 0.18s ease;
}
.confirm-overlay.open { display: flex; }
.confirm-box {
  background: var(--paper-raised); border-radius: var(--radius-m); padding: 28px;
  max-width: 360px; width: 100%; box-shadow: var(--shadow-pop);
  animation: popIn 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.confirm-box h4 { margin-bottom: 8px; }
.confirm-box p { color: var(--ink-soft); font-size: 0.9rem; }
.confirm-actions { display: flex; gap: 10px; margin-top: 20px; justify-content: flex-end; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .doc-stack { height: 260px; margin-top: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .main-nav, .nav-actions .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .site-header.menu-open .main-nav {
    display: flex;
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    background: var(--paper);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    border-bottom: 1px solid var(--line);
    gap: 16px;
    animation: slideDown 0.22s ease;
  }
  .site-header.menu-open .main-nav a { animation: fadeInUp 0.3s both; }
  .site-header.menu-open .main-nav a:nth-child(1) { animation-delay: 0.02s; }
  .site-header.menu-open .main-nav a:nth-child(2) { animation-delay: 0.06s; }
  .site-header.menu-open .main-nav a:nth-child(3) { animation-delay: 0.1s; }
  .site-header.menu-open .main-nav a:nth-child(4) { animation-delay: 0.14s; }
  .footer-grid { grid-template-columns: 1fr; }
  .subject-row { border-right: none !important; }

  /* Off-canvas sidebar on mobile: slides in over content with a backdrop */
  .admin-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    transform: translateX(-100%);
    z-index: 60;
    width: 250px;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-sidebar.collapsed { width: 250px; padding-left: 18px; padding-right: 18px; } /* collapse is desktop-only */
  .admin-sidebar.collapsed .brand span:not(.brand-mark),
  .admin-sidebar.collapsed .admin-nav button .label,
  .admin-sidebar.collapsed .admin-sidebar-foot {
    opacity: 1; width: auto; pointer-events: auto;
  }
  .admin-content { padding: 22px; }
  .admin-topbar { padding: 16px 20px; }
}