/*
 * MY IMC Emergency Assignment Submission — app.css
 *
 * Design language extracted from the supplied aurora-dark-only.html reference:
 * dark charcoal background, soft dark panels, violet primary / mint success /
 * coral warning-error / sky info accents, rounded panels, subtle borders,
 * compact responsive sidebar, top bar, cards, forms, tables, badges, mobile nav,
 * Segoe UI/system typography. Demo analytics (line chart, gauges, bar meters,
 * activity feed, feature banner) were intentionally NOT carried over — this app
 * has no decorative dashboard content, per the approved plan.
 *
 * Dark-only application; no light theme.
 */

:root {
  --bg: #12161f;
  --bg-soft: #181d28;
  --panel: #1c2230;
  --panel-2: #232a3b;
  --border: rgba(148, 163, 184, 0.12);
  --border-hover: rgba(167, 139, 250, 0.35);
  --text: #e8eef7;
  --text-muted: #8b9bb4;
  --text-soft: #6b7a94;
  --violet: #a78bfa;
  --violet-dim: rgba(167, 139, 250, 0.14);
  --mint: #34d399;
  --mint-dim: rgba(52, 211, 153, 0.14);
  --coral: #fb7185;
  --coral-dim: rgba(251, 113, 133, 0.14);
  --sky: #38bdf8;
  --sky-dim: rgba(56, 189, 248, 0.14);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --radius: 14px;
  --radius-sm: 10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

a { color: inherit; }

/* ========== SHELL ========== */
.shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 4px 10px 28px;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(145deg, #a78bfa, #34d399);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #12161f;
  font-size: 0.95rem;
}
.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand-name span { color: var(--violet); }

.nav-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
  padding: 0 12px;
  margin: 16px 0 6px;
}
.nav-label:first-of-type { margin-top: 0; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.nav-item i { width: 18px; text-align: center; font-size: 0.95rem; }
.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item.active {
  background: var(--violet-dim);
  color: var(--violet);
  font-weight: 600;
}
.nav-item .badge {
  margin-left: auto;
  background: var(--coral);
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
  min-width: 18px;
  text-align: center;
}

.sidebar-foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--panel);
}
.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(145deg, #a78bfa, #38bdf8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #12161f;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}
.user-name { font-size: 0.85rem; font-weight: 600; }
.user-role { font-size: 0.7rem; color: var(--text-muted); }

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar h1 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  position: relative;
}
.icon-btn:hover { color: var(--text); border-color: var(--text-soft); }

.btn {
  padding: 9px 15px;
  border-radius: 9px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  text-decoration: none;
}
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }
.btn-primary { background: var(--violet); color: #12161f; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-ghost {
  background: var(--panel);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-soft); }

.content {
  padding: 24px 28px 40px;
  flex: 1;
}

/* ========== GRID ========== */
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.panel:hover { border-color: var(--border-hover); }

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.panel-head h3 { font-size: 0.92rem; font-weight: 600; }
.panel-head .tag {
  font-size: 0.68rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* ========== BADGES ========== */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
}
.status-badge.violet { background: var(--violet-dim); color: var(--violet); }
.status-badge.mint { background: var(--mint-dim); color: var(--mint); }
.status-badge.coral { background: var(--coral-dim); color: var(--coral); }
.status-badge.sky { background: var(--sky-dim); color: var(--sky); }
.status-badge.muted { background: var(--panel-2); color: var(--text-muted); border: 1px solid var(--border); }

/* ========== TABLES ========== */
.table-wrap { overflow-x: auto; }
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
table.data-table th {
  text-align: left;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-soft);
  font-weight: 700;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
table.data-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tr:hover td { background: var(--panel-2); }

/* ========== FORMS ========== */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--violet);
  box-shadow: 0 0 0 3px var(--violet-dim);
}
.form-group input::placeholder { color: var(--text-soft); }
.form-hint { font-size: 0.74rem; color: var(--text-muted); margin-top: 4px; }
.form-error { font-size: 0.78rem; color: var(--coral); margin-top: 4px; }

.radio-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.radio-row input { width: auto; }

/* Stage E3: Student selection checklist (Teacher > My Classes > Add Students) */
.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 280px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px;
}
.checkbox-row { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; padding: 4px 0; }
.checkbox-row input { width: auto; }

/* ========== ALERTS ========== */
.alert {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
  border: 1px solid var(--border);
}
.alert.error { background: var(--coral-dim); color: var(--coral); border-color: rgba(251,113,133,0.3); }
.alert.success { background: var(--mint-dim); color: var(--mint); border-color: rgba(52,211,153,0.3); }
.alert.info { background: var(--sky-dim); color: var(--sky); border-color: rgba(56,189,248,0.3); }

/* ========== PUBLIC HOME ========== */
.public-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.public-card {
  max-width: 440px;
  width: 100%;
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  box-shadow: var(--shadow);
}
.public-card .brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin: 0 auto 18px;
  font-size: 1.4rem;
}
.public-card h1 { font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
.public-card h2 { font-size: 1rem; font-weight: 600; color: var(--violet); margin-bottom: 16px; }
.public-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 24px; line-height: 1.6; }
.public-card .btn { width: 100%; justify-content: center; padding: 12px; font-size: 0.95rem; }

/* Stage E6.5: Emergency Local Login divider + form, visually secondary to Microsoft. */
.login-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 18px;
  color: var(--text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.login-divider::before, .login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.public-card .local-login-section { text-align: left; }
.public-card .local-login-section h3 { font-size: 0.85rem; font-weight: 600; color: var(--text); margin-bottom: 10px; text-align: center; }
.public-card .local-login-section .btn-primary { background: var(--panel-soft, rgba(255,255,255,0.06)); color: var(--text); border: 1px solid var(--border); }
.public-card .local-login-section .btn-secondary-action { background: var(--panel-soft, rgba(255,255,255,0.06)); color: var(--text); border: 1px solid var(--border); }
.public-card .form-hint.centered { text-align: center; margin-top: 10px; }

.placeholder-panel {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}
.placeholder-panel i { font-size: 2rem; color: var(--text-soft); margin-bottom: 12px; display: block; }

/* ========== MOBILE ========== */
.mobile-bar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 30;
}
.mobile-bar button {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 40;
}
.overlay.show { display: block; }

@media (max-width: 1100px) {
  .col-3, .col-4 { grid-column: span 6; }
  .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
}
@media (max-width: 768px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 240px;
    transform: translateX(-100%);
    z-index: 50;
    transition: transform 0.25s ease;
  }
  .sidebar.open { transform: translateX(0); }
  .mobile-bar { display: flex; }
  .content { padding: 16px 14px 32px; }
  .topbar { display: none; }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
}

/* Vivid glass surfaces shared by public and authenticated views. */
:root {
  --bg: #090e25;
  --bg-soft: rgba(15, 22, 51, 0.74);
  --panel: rgba(30, 40, 83, 0.56);
  --panel-2: rgba(65, 77, 132, 0.42);
  --border: rgba(199, 218, 255, 0.2);
  --border-hover: rgba(123, 237, 231, 0.55);
  --text: #f5f8ff;
  --text-muted: #c3cee7;
  --text-soft: #aebfdf;
  --violet: #c5a2ff;
  --violet-dim: rgba(170, 113, 255, 0.22);
  --mint: #6af2ce;
  --mint-dim: rgba(76, 233, 190, 0.2);
  --coral: #ff92a7;
  --coral-dim: rgba(255, 104, 140, 0.18);
  --sky: #7cdbff;
  --sky-dim: rgba(67, 190, 255, 0.2);
  --shadow: 0 18px 50px rgba(2, 7, 31, 0.3);
}

body {
  background: radial-gradient(circle at 12% 8%, rgba(119, 74, 255, 0.48), transparent 34%),
              radial-gradient(circle at 87% 16%, rgba(0, 202, 219, 0.32), transparent 30%),
              radial-gradient(circle at 70% 85%, rgba(255, 69, 151, 0.22), transparent 35%),
              #090e25;
  background-attachment: fixed;
}
.sidebar, .topbar, .mobile-bar, .panel, .public-card, .user, .icon-btn, .btn-ghost {
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
}
.sidebar, .topbar, .mobile-bar { background: rgba(12, 19, 46, 0.73); }
.panel, .public-card { background: var(--panel); box-shadow: var(--shadow), inset 0 1px rgba(255,255,255,0.12); }
.panel:hover { box-shadow: 0 22px 56px rgba(2, 7, 31, 0.4), 0 0 28px rgba(112, 85, 255, 0.1); }
.btn-primary { background: linear-gradient(125deg, #aa84ff, #6de7e1); color: #10162d; box-shadow: 0 8px 24px rgba(92, 122, 239, 0.24); }
.btn-primary:hover { filter: brightness(1.13); transform: translateY(-1px); }
.nav-item.active { background: linear-gradient(100deg, rgba(163, 105, 255, 0.28), rgba(85, 211, 222, 0.13)); color: #f2eaff; }
.nav-item:hover, table.data-table tr:hover td { background: rgba(137, 154, 230, 0.15); }
.form-group input, .form-group select, .form-group textarea, .checkbox-list { background: rgba(12, 19, 49, 0.55); }
.form-group input:focus-visible, .form-group select:focus-visible, .form-group textarea:focus-visible, .btn:focus-visible, .nav-item:focus-visible { outline: 2px solid var(--mint); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { .btn, .nav-item, .sidebar { transition: none; } }

/* Clay design: warm surfaces, terracotta actions, horizontal navigation. */
:root {
  --bg: #f7f3ee; --bg-soft: #efeae3; --panel: #fffcf8; --panel-2: #f3eee7;
  --border: #e5ddd2; --border-hover: #d4c9ba; --text: #2c2419;
  --text-muted: #7a6f63; --text-soft: #9c9185; --violet: #c45c26;
  --violet-dim: rgba(196,92,38,.1); --mint: #5c7a64;
  --mint-dim: rgba(92,122,100,.12); --coral: #b54e31;
  --coral-dim: rgba(181,78,49,.1); --sky: #496c8a;
  --sky-dim: rgba(73,108,138,.12); --shadow: 0 4px 24px rgba(44,36,25,.06);
  --radius: 16px; --radius-sm: 10px;
}
[data-theme="dark"] {
  --bg: #1a1612; --bg-soft: #221e19; --panel: #2a241e; --panel-2: #322c25;
  --border: #3d352c; --border-hover: #665443; --text: #f5f0e8;
  --text-muted: #b0a594; --text-soft: #9f9180; --violet: #e07a3d;
  --violet-dim: rgba(224,122,61,.15); --mint: #8eb398;
  --mint-dim: rgba(122,154,130,.15); --coral: #f49a7f;
  --coral-dim: rgba(244,154,127,.14); --sky: #9ac4dc;
  --sky-dim: rgba(154,196,220,.13); --shadow: 0 4px 24px rgba(0,0,0,.3);
}
body { background: var(--bg); color: var(--text); transition: background .25s ease, color .25s ease; }
.shell { display: block; }
.sidebar { position: sticky; top: 0; z-index: 50; width: 100%; height: auto; min-height: 68px; padding: 10px 28px; display: flex; flex-direction: row; align-items: center; gap: 24px; background: var(--panel); border-right: 0; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
.brand { padding: 0; flex-shrink: 0; }
.brand-mark, .public-card .brand-mark { background: linear-gradient(145deg, var(--violet), #d4784a); color: white; }
.brand-name span { color: var(--violet); }
.shell-nav { display: flex; align-items: center; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav-item { width: auto; padding: 8px 12px; color: var(--text-muted); font-size: .88rem; }
.nav-item.active, .nav-item:hover { color: var(--violet); background: var(--violet-dim); }
.nav-label { display: none; }
.sidebar-foot { margin: 0 0 0 auto; padding: 0; border: 0; display: flex; align-items: center; gap: 10px; }
.sidebar-foot form { margin: 0; }
.user { padding: 3px 7px; background: transparent; box-shadow: none; }
.user-avatar { background: var(--violet-dim); color: var(--violet); }
.theme-btn { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: 10px; background: var(--panel-2); color: var(--text); cursor: pointer; }
.theme-btn:hover { color: var(--violet); border-color: var(--violet); }
.main { max-width: 1240px; width: 100%; margin: auto; }
.topbar { position: static; padding: 34px 28px 8px; border: 0; background: transparent; box-shadow: none; }
.topbar h1 { font-size: 1.8rem; }
.content { padding: 20px 28px 70px; }
.panel, .public-card { background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow); padding: 24px; }
.sidebar, .topbar, .panel, .public-card, .user, .icon-btn, .btn-ghost { backdrop-filter: none; -webkit-backdrop-filter: none; }
.panel:hover { border-color: var(--border-hover); box-shadow: 0 8px 32px rgba(44,36,25,.08); }
.panel-head h3 { font-size: 1.04rem; }
.panel-head .tag, .status-badge.muted { background: var(--panel-2); color: var(--text-muted); }
.btn { border-radius: 12px; padding: 10px 17px; }
.btn-primary { background: var(--violet); color: #fff; box-shadow: 0 4px 14px rgba(196,92,38,.22); }
.btn-primary:hover { background: #a34a1c; filter: none; }
[data-theme="dark"] .btn-primary:hover { background: #f09050; }
.btn-ghost, .icon-btn { background: var(--panel-2); color: var(--text-muted); border: 1px solid var(--border); box-shadow: none; }
.btn-ghost:hover, .icon-btn:hover { background: var(--border); color: var(--text); }
.form-group label { color: var(--text-muted); font-size: .82rem; }
.form-group input, .form-group select, .form-group textarea, .checkbox-list { background: var(--bg-soft); color: var(--text); border: 1.5px solid var(--border); padding: 12px 14px; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { background: var(--panel); border-color: var(--violet); box-shadow: 0 0 0 3px var(--violet-dim); }
.form-group input:focus-visible, .form-group select:focus-visible, .form-group textarea:focus-visible, .btn:focus-visible, .nav-item:focus-visible, .theme-btn:focus-visible { outline: 2px solid var(--violet); outline-offset: 2px; }
table.data-table tr:hover td { background: var(--panel-2); }
.public-hero { padding: 42px 20px; }
.public-card { position: relative; max-width: 480px; padding: 42px 38px; }
.public-theme { position: absolute; right: 20px; top: 20px; }
.public-card h2 { color: var(--violet); }
.public-card .local-login-section .btn-primary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.public-card .local-login-section .btn-primary:hover { background: var(--border); }
@media (max-width: 900px) {
  .sidebar { flex-wrap: wrap; gap: 8px 16px; padding: 12px 16px; }
  .shell-nav { order: 3; flex-basis: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .nav-item { white-space: nowrap; }
  .sidebar-foot { margin-left: auto; }
  .user-role { display: none; }
}
@media (max-width: 600px) {
  .sidebar { position: sticky; width: 100%; height: auto; transform: none; }
  .sidebar .user { display: none; }
  .topbar { display: flex; padding: 26px 16px 6px; }
  .content { padding: 16px 14px 40px; }
  .public-card { padding: 42px 22px 30px; }
}

/* Advanced glass theme shared by public and authenticated pages. */
:root{--bg:#f3f5fb;--bg-soft:rgba(255,255,255,.68);--panel:rgba(255,255,255,.68);--panel-2:rgba(238,242,255,.72);--border:rgba(255,255,255,.72);--border-hover:rgba(59,130,246,.38);--text:#172033;--text-muted:#526079;--text-soft:#64748b;--violet:#2563eb;--violet-dim:rgba(59,130,246,.12);--mint:#047857;--mint-dim:rgba(16,185,129,.12);--coral:#be123c;--coral-dim:rgba(244,63,94,.12);--sky:#0369a1;--sky-dim:rgba(14,165,233,.12);--shadow:0 8px 32px rgba(31,38,135,.09);--radius:18px;--radius-sm:11px}
[data-theme="dark"]{--bg:#0b0f19;--bg-soft:rgba(17,24,39,.72);--panel:rgba(17,24,39,.66);--panel-2:rgba(30,41,59,.66);--border:rgba(255,255,255,.1);--border-hover:rgba(96,165,250,.5);--text:#f1f5f9;--text-muted:#b9c5d6;--text-soft:#9eacc0;--violet:#60a5fa;--violet-dim:rgba(59,130,246,.18);--mint:#34d399;--mint-dim:rgba(16,185,129,.16);--coral:#fb7185;--coral-dim:rgba(244,63,94,.17);--sky:#7dd3fc;--sky-dim:rgba(14,165,233,.16);--shadow:0 8px 32px rgba(0,0,0,.36)}
body{font-family:Inter,"Segoe UI",system-ui,sans-serif;background-color:var(--bg);background-image:radial-gradient(at 0% 0%,rgba(59,130,246,.17),transparent 50%),radial-gradient(at 100% 0%,rgba(139,92,246,.17),transparent 50%),radial-gradient(at 100% 100%,rgba(236,72,153,.1),transparent 50%),radial-gradient(at 0% 100%,rgba(16,185,129,.13),transparent 50%);background-attachment:fixed}
[data-theme="dark"] body{background-image:radial-gradient(at 0% 0%,rgba(29,78,216,.26),transparent 50%),radial-gradient(at 100% 0%,rgba(124,58,237,.26),transparent 50%),radial-gradient(at 100% 100%,rgba(219,39,119,.14),transparent 50%),radial-gradient(at 0% 100%,rgba(5,150,105,.16),transparent 50%)}
.sidebar{background:var(--bg-soft);border-color:var(--border);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);min-width:0;flex-wrap:wrap;row-gap:8px}
.brand-mark,.public-card .brand-mark{background:linear-gradient(135deg,#2563eb,#8b5cf6);color:#fff;box-shadow:0 8px 18px rgba(59,130,246,.24)}
.brand-name span{color:var(--violet)}.shell-nav{min-width:0}.nav-item{white-space:nowrap}.nav-item.active{background:var(--violet-dim);color:var(--violet)}.nav-item:hover{background:var(--panel-2);color:var(--violet)}
.sidebar-foot{min-width:0}.user{min-width:0}.user-name{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.main{max-width:1320px}.topbar{background:transparent}
.panel,.public-card,.user,.icon-btn,.btn-ghost,.theme-btn{backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.panel,.public-card{background:var(--panel);box-shadow:var(--shadow)}.panel:hover{box-shadow:var(--shadow)}
.form-group input,.form-group select,.form-group textarea,.checkbox-list{background:var(--panel-2);border:1px solid var(--border)}
.btn-primary{background:linear-gradient(120deg,#2563eb,#7c3aed);color:#fff;box-shadow:0 8px 20px rgba(59,130,246,.22)}.btn-primary:hover,[data-theme="dark"] .btn-primary:hover{background:linear-gradient(120deg,#1d4ed8,#6d28d9);color:#fff}
.btn-ghost,.icon-btn,.theme-btn{background:var(--panel-2);color:var(--text)}.public-card .local-login-section .btn-primary{background:var(--panel-2);color:var(--text);box-shadow:none}.public-card .local-login-section .btn-primary:hover{background:var(--violet-dim)}
.table-wrap{max-width:100%}table.data-table{min-width:580px}.panel,.grid>*,.topbar,.content{min-width:0}.panel-head{gap:12px;flex-wrap:wrap}:where(a,button,input,select,textarea):focus-visible{outline:2px solid var(--violet);outline-offset:2px}
@media(max-width:1050px){.sidebar{padding:12px 16px}.shell-nav{order:3;flex-basis:100%;overflow-x:auto;flex-wrap:nowrap;scrollbar-width:thin}.sidebar-foot{margin-left:auto}}
@media(max-width:600px){.sidebar{gap:8px}.sidebar-foot{gap:5px}.sidebar-foot .btn{padding:8px 10px;font-size:.78rem}.sidebar .user{display:none}.topbar{display:flex;align-items:flex-start;flex-wrap:wrap;gap:10px}.topbar h1{font-size:1.45rem}.public-card{padding:42px 22px 30px}}
@media(prefers-reduced-transparency:reduce){.sidebar,.panel,.public-card{backdrop-filter:none;-webkit-backdrop-filter:none}.sidebar,.panel,.public-card{background:var(--bg)}}

/* Keep the navigation in the header at every viewport width. */
@media(max-width:768px){.shell{display:block}.sidebar{position:sticky;top:0;left:auto;width:100%;height:auto;min-height:0;transform:none;z-index:50}.sidebar.open{transform:none}.topbar{display:flex}.mobile-bar,.overlay{display:none!important}.shell-nav{order:3;flex-basis:100%;overflow-x:auto;flex-wrap:nowrap}.nav-item{width:auto}.content{padding:18px 16px 40px}}

/* Public academic originality artwork. Keep the form legible in both themes. */
.originality-hero{background-color:#eef4ff;background-image:radial-gradient(circle at 12% 14%,rgba(59,130,246,.24),transparent 38%),radial-gradient(circle at 88% 18%,rgba(139,92,246,.21),transparent 36%),radial-gradient(circle at 78% 86%,rgba(16,185,129,.13),transparent 32%),linear-gradient(135deg,#f8fbff,#edf2ff 55%,#f8f5ff);min-height:100vh}
.originality-hero .public-card{background:rgba(255,255,255,.84);border-color:rgba(255,255,255,.8);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 24px 70px rgba(26,43,95,.22)}
[data-theme="dark"] .originality-hero{background-color:#0b1020;background-image:radial-gradient(circle at 12% 14%,rgba(37,99,235,.32),transparent 38%),radial-gradient(circle at 88% 18%,rgba(124,58,237,.27),transparent 36%),radial-gradient(circle at 78% 86%,rgba(5,150,105,.16),transparent 32%),linear-gradient(135deg,#0b1020,#111a30 55%,#17132b)}
[data-theme="dark"] .originality-hero .public-card{background:rgba(15,23,42,.86);border-color:rgba(255,255,255,.16)}
@media(max-width:600px){.originality-hero .public-card{backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}}
.brand-mark.has-logo,.public-card .brand-mark.has-logo{background:rgba(255,255,255,.94);box-shadow:0 5px 18px rgba(20,45,91,.13)}
.brand-logo{display:block;width:80%;height:80%;object-fit:contain}
.public-card .brand-mark{display:flex;align-items:center;justify-content:center}