/* ============ Avin Edu - Global Styles ============ */

/* ============ Theme variables (Phase 6B: dark mode) ============ */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f1f3;
    --bg-card: #ffffff;
    --bg-hover: #eef1f5;
    --text-primary: #1a1a2e;
    --text-secondary: #444455;
    --text-muted: #777788;
    --text-inverse: #ffffff;
    --border: #e0e0e0;
    --border-light: #eeeeee;
    --accent-primary: #C41E3A;
    --accent-secondary: #1B3A6B;
    --accent-light: #e3ecf7;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-md: rgba(0, 0, 0, 0.12);
    --success: #2e7d32;
    --success-bg: #e8f5e9;
    --warning: #e65100;
    --warning-bg: #fff3e0;
    --danger: #C41E3A;
    --danger-bg: #fde8ec;
    --info: #1565c0;
    --info-bg: #e3f2fd;
    --nav-bg: #ffffff;
    --nav-text: #1a1a2e;
    --input-bg: #ffffff;
    --input-border: #ddd;
    --input-focus: #1B3A6B;
    --table-stripe: #fafbfc;
    --table-hover: #f0f4f8;
    --modal-overlay: rgba(0,0,0,0.4);
    --toast-bg: #333;
    --toast-text: #fff;
    --code-bg: #f5f5f5;
    --timeline-line: #e0e0e0;
    --timeline-dot: #1B3A6B;
    --badge-bg: #f0f0f0;
    --badge-text: #555;
    --scrollbar-track: #f0f0f0;
    --scrollbar-thumb: #ccc;
    /* extra semantic vars (status badges / alerts / purple AI accents) */
    --accent-primary-hover: #9E182F;
    --accent-secondary-hover: #142C52;
    --status-neutral-bg: #E5E7EB;
    --status-neutral-text: #374151;
    --status-warn-bg: #FEF3C7;
    --status-warn-text: #92400E;
    --status-info-bg: #DBEAFE;
    --status-info-text: #1E40AF;
    --status-ok-bg: #D1FAE5;
    --status-ok-text: #065F46;
    --status-bad-bg: #FEE2E2;
    --status-bad-text: #991B1B;
    --status-cyan-bg: #CFFAFE;
    --status-cyan-text: #155E75;
    --status-muted-bg: #E5E7EB;
    --status-muted-text: #6B7280;
    --alert-success-bg: #D1FAE5;
    --alert-success-border: #A7F3D0;
    --alert-success-text: #065F46;
    --alert-danger-bg: #FEE2E2;
    --alert-danger-border: #FECACA;
    --alert-danger-text: #991B1B;
    --alert-warning-bg: #FEF3C7;
    --alert-warning-border: #FDE68A;
    --alert-warning-text: #92400E;
    --alert-info-bg: #DBEAFE;
    --alert-info-border: #BFDBFE;
    --alert-info-text: #1E40AF;
    --purple-bg: #f0e6ff;
    --purple-text: #6B21A8;
    --purple-border: #e0d0f0;
}

[data-theme="dark"] {
    --bg-primary: #0f1117;
    --bg-secondary: #161922;
    --bg-tertiary: #1e2231;
    --bg-card: #1a1e2e;
    --bg-hover: #252a3a;
    --text-primary: #e8eaf0;
    --text-secondary: #b0b5c5;
    --text-muted: #7a8095;
    --text-inverse: #0f1117;
    --border: #2a2f40;
    --border-light: #222738;
    --accent-primary: #e84060;
    --accent-secondary: #6ba3e8;
    --accent-light: #1e2a40;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-md: rgba(0, 0, 0, 0.5);
    --success: #66bb6a;
    --success-bg: #1a2e1a;
    --warning: #ffa726;
    --warning-bg: #2e2a1a;
    --danger: #e84060;
    --danger-bg: #2e1a1e;
    --info: #64b5f6;
    --info-bg: #1a2535;
    --nav-bg: #161922;
    --nav-text: #e8eaf0;
    --input-bg: #1e2231;
    --input-border: #2a2f40;
    --input-focus: #6ba3e8;
    --table-stripe: #161922;
    --table-hover: #1e2535;
    --modal-overlay: rgba(0,0,0,0.7);
    --toast-bg: #e8eaf0;
    --toast-text: #0f1117;
    --code-bg: #1e2231;
    --timeline-line: #2a2f40;
    --timeline-dot: #6ba3e8;
    --badge-bg: #2a2f40;
    --badge-text: #b0b5c5;
    --scrollbar-track: #1e2231;
    --scrollbar-thumb: #3a4055;
    /* extra semantic vars */
    --accent-primary-hover: #f05673;
    --accent-secondary-hover: #8cbcf2;
    --status-neutral-bg: #2a3040;
    --status-neutral-text: #b0b5c5;
    --status-warn-bg: #33291a;
    --status-warn-text: #fbbf24;
    --status-info-bg: #1a2a40;
    --status-info-text: #93c5fd;
    --status-ok-bg: #17301f;
    --status-ok-text: #6ee7b7;
    --status-bad-bg: #381b22;
    --status-bad-text: #fca5a5;
    --status-cyan-bg: #12303a;
    --status-cyan-text: #67e8f9;
    --status-muted-bg: #2a3040;
    --status-muted-text: #8a90a5;
    --alert-success-bg: #17301f;
    --alert-success-border: #1e4030;
    --alert-success-text: #6ee7b7;
    --alert-danger-bg: #381b22;
    --alert-danger-border: #4a2530;
    --alert-danger-text: #fca5a5;
    --alert-warning-bg: #33291a;
    --alert-warning-border: #453a20;
    --alert-warning-text: #fcd34d;
    --alert-info-bg: #1a2a40;
    --alert-info-border: #1f3350;
    --alert-info-text: #93c5fd;
    --purple-bg: #2a2040;
    --purple-text: #c4b5fd;
    --purple-border: #3a2d55;
}
:root {
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.55;
}

a { color: var(--accent-secondary); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--code-bg); padding: 1px 6px; border-radius: 5px; font-size: .9em; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; }
.muted { color: var(--text-muted); }
.small { font-size: 13px; }
.center { text-align: center; }

/* ============ Nav ============ */
.topnav {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px var(--shadow), 0 1px 2px var(--shadow);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 24px;
  height: 60px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-flex;
  font-weight: 800;
  font-size: 20px;
  line-height: 1;
  letter-spacing: -2px;
}
.brand-mark .mark-a { color: var(--accent-primary); }
.brand-mark .mark-v { color: var(--accent-secondary); }
.brand-text { font-weight: 700; color: var(--accent-secondary); font-size: 17px; letter-spacing: .5px; display: flex; flex-direction: column; line-height: 1.1; }
.brand-text small { font-weight: 500; color: var(--text-muted); font-size: 10px; letter-spacing: .3px; }
.brand-mark-lg { font-size: 44px; letter-spacing: -4px; }

.nav-links { display: flex; gap: 4px; flex: 1; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
.nav-links a { white-space: nowrap; flex-shrink: 0; }
.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text-primary);
  font-weight: 500;
}
.nav-links a:hover { background: var(--bg-secondary); text-decoration: none; }
.nav-links a.active { background: var(--danger-bg); color: var(--accent-primary); }
.nav-links a.nav-admin { color: var(--accent-secondary); }
.nav-links a.nav-admin.active { background: var(--accent-light); color: var(--accent-secondary); }
.nav-links a.nav-disabled { color: var(--text-muted); cursor: default; }
.nav-links a.nav-disabled:hover { background: transparent; }

.nav-user { display: flex; align-items: center; gap: 12px; }
.user-chip {
  font-size: 13.5px;
  color: var(--text-muted);
  white-space: nowrap;
}
.user-chip em { font-style: normal; color: var(--accent-secondary); font-size: 11px; text-transform: uppercase; letter-spacing: .5px; }
.inline-form { display: inline; }

/* ============ Layout ============ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.page-header h1 { margin: 4px 0 6px; font-size: 26px; letter-spacing: -.3px; }
.h1-sub { font-size: 16px; color: var(--text-muted); font-weight: 500; margin-left: 8px; }
.page-sub { margin: 0; font-size: 14px; }
.header-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.two-col { display: grid; grid-template-columns: 3fr 2fr; gap: 16px; align-items: start; }
.student-layout { display: grid; grid-template-columns: 1fr 320px; gap: 16px; align-items: start; }
.side-col { display: flex; flex-direction: column; gap: 16px; }

/* ============ Cards ============ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px var(--shadow), 0 1px 2px var(--shadow);
  padding: 18px 20px;
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.card-header h3 { margin: 0; font-size: 16px; }
.form-card { max-width: 640px; }

/* ============ Stats ============ */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px var(--shadow), 0 1px 2px var(--shadow);
  padding: 20px 24px;
}
.stat-num { font-size: 34px; font-weight: 700; color: var(--accent-secondary); letter-spacing: -1px; }
.stat-label { color: var(--text-muted); font-size: 14px; margin-top: 2px; }
.stat-card-accent .stat-num { color: var(--accent-primary); }

/* ============ Tables ============ */
.table { width: 100%; border-collapse: collapse; }
.table th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-muted);
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
.table td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tbody tr:hover { background: var(--table-hover); }
#students-table tbody tr[data-status] { cursor: pointer; }
.table tbody tr:last-child td { border-bottom: none; }

/* ============ Badges ============ */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2px;
  text-transform: capitalize;
  white-space: nowrap;
}
.badge-new { background: var(--status-neutral-bg); color: var(--status-neutral-text); }
.badge-in_progress { background: var(--status-warn-bg); color: var(--status-warn-text); }
.badge-submitted { background: var(--status-info-bg); color: var(--status-info-text); }
.badge-accepted { background: var(--status-ok-bg); color: var(--status-ok-text); }
.badge-rejected { background: var(--status-bad-bg); color: var(--status-bad-text); }
.badge-enrolled { background: var(--status-cyan-bg); color: var(--status-cyan-text); }
.badge-withdrawn { background: var(--status-muted-bg); color: var(--status-muted-text); }
.badge-draft { background: var(--status-neutral-bg); color: var(--status-neutral-text); }
.badge-documents_gathering { background: var(--status-warn-bg); color: var(--status-warn-text); }
.badge-under_review { background: var(--status-info-bg); color: var(--status-info-text); }
.badge-active { background: var(--status-ok-bg); color: var(--status-ok-text); }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 14.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .05s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent-primary); color: #fff; }
.btn-primary:hover { background: var(--accent-primary-hover); }
.btn-outline { background: var(--bg-card); border-color: var(--border); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--accent-secondary); color: var(--accent-secondary); }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-secondary); }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 7px; }
.btn-block { width: 100%; margin-top: 10px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ============ Forms ============ */
label {
  display: block;
  font-weight: 600;
  font-size: 13.5px;
  margin-bottom: 14px;
  color: var(--text-primary);
}
label small { font-weight: 400; }
input[type=text], input[type=password], input[type=date], input[type=time], input[type=number], input[type=email], input[type=url], select, textarea {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14.5px;
  font-family: inherit;
  background: var(--bg-card);
  color: var(--text-primary);
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 0 0 0 3px rgba(27, 58, 107, .12);
}
textarea.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13.5px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }

.filter-bar {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  padding-bottom: 16px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.filter-bar label {
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.filter-bar select { margin-top: 0; width: auto; min-width: 150px; }

/* ============ Markdown rendering ============ */
.md-rendered { min-height: 100px; word-wrap: break-word; }
.md-rendered h1 { font-size: 24px; border-bottom: 2px solid var(--border); padding-bottom: 8px; margin-top: 8px; }
.md-rendered h2 { font-size: 19px; margin-top: 24px; color: var(--accent-secondary); }
.md-rendered h3 { font-size: 16px; margin-top: 18px; }
.md-rendered ul, .md-rendered ol { padding-left: 24px; }
.md-rendered li { margin: 4px 0; }
.md-rendered p { margin: 10px 0; }
.md-rendered table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14px; }
.md-rendered th, .md-rendered td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.md-rendered th { background: var(--bg-secondary); font-weight: 600; }
.md-rendered blockquote { border-left: 4px solid var(--accent-primary); margin: 12px 0; padding: 4px 16px; background: var(--danger-bg); border-radius: 0 8px 8px 0; }
.md-rendered code { background: var(--code-bg); padding: 2px 6px; border-radius: 5px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
.md-rendered pre {
  background: var(--code-bg);
  color: var(--text-primary);
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
}
.md-rendered pre code { background: transparent; color: inherit; padding: 0; }
.md-rendered input[type=checkbox] { margin-right: 6px; }
.md-rendered hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ============ Timeline ============ */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline-item { position: relative; padding: 0 0 22px 30px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: -6px;
  width: 2px;
  background: var(--border);
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item:last-child::before { display: none; }
.timeline-dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 3px solid var(--accent-primary);
}
.timeline-body { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; }
.timeline-meta { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 6px; flex-wrap: wrap; }
.timeline-who { color: var(--accent-secondary); }
.timeline-content { white-space: pre-wrap; }

/* ============ Activity list ============ */
/* Height-cap + vertical scroll on the Recent Activity LIST only (NOT the whole
   .card), so the .card-header title stays fixed while the items scroll.
   ~4-5 items visible; the empty-state renders <p class="empty-note"> with no
   .activity-list, so nothing changes when the list is absent. */
.activity-list {
  list-style: none; margin: 0; padding: 0;
  max-height: 460px;
  overflow-y: auto;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
/* Subtle, theme-matched scrollbar for the activity list */
.activity-list::-webkit-scrollbar { width: 8px; }
.activity-list::-webkit-scrollbar-track { background: var(--scrollbar-track); }
.activity-list::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 4px; }
.activity-list::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
.activity-list li { padding: 12px 0; border-bottom: 1px solid var(--border); }
.activity-list li:last-child { border-bottom: none; }
.activity-top { display: flex; justify-content: space-between; gap: 10px; }
.activity-body { color: var(--text-primary); font-size: 14px; margin: 2px 0; }
.activity-link { font-size: 13px; color: var(--accent-secondary); }

/* ============ Alerts / flash ============ */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 14.5px;
  border: 1px solid transparent;
}
.alert-success { background: var(--alert-success-bg); border-color: var(--alert-success-border); color: var(--alert-success-text); }
.alert-danger { background: var(--alert-danger-bg); border-color: var(--alert-danger-border); color: var(--alert-danger-text); }
.alert-warning { background: var(--alert-warning-bg); border-color: var(--alert-warning-border); color: var(--alert-warning-text); }
.alert-info { background: var(--alert-info-bg); border-color: var(--alert-info-border); color: var(--alert-info-text); }
.flash-area { position: relative; z-index: 5; }
.flash-area:empty { margin: 0; }
.created-banner code.big-pw { font-size: 17px; background: #065F46; color: #fff; padding: 3px 10px; border-radius: 6px; }

/* ============ Toast ============ */
.toast-area {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 360px;
}
.toast {
  background: var(--toast-bg);
  color: var(--toast-text);
  padding: 12px 18px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
  font-size: 14px;
  font-weight: 500;
  animation: toast-in .25s ease;
  border-left: 4px solid var(--accent-secondary);
}
.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--accent-primary); }
.toast-info { border-left-color: var(--info); }
.toast.out { animation: toast-out .3s ease forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(8px); } }

/* ============ Login ============ */
.login-body {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--accent-light) 55%, var(--danger-bg) 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
}
.login-card {
  background: var(--bg-card);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(27, 58, 107, .14);
  padding: 40px 44px;
  width: 100%;
  max-width: 400px;
}
.login-brand { text-align: center; margin-bottom: 24px; }
.login-brand h1 { margin: 10px 0 0; color: var(--accent-secondary); letter-spacing: 2px; font-size: 24px; }
.tagline { margin: 0; color: var(--text-muted); font-size: 13px; font-style: italic; }
.login-card h2 { margin: 0 0 18px; font-size: 17px; color: var(--text-primary); text-align: center; }
.login-footer { text-align: center; color: var(--text-muted); font-size: 12px; margin: 22px 0 0; }

/* ============ Change password ============ */
.change-pw-wrap { display: flex; justify-content: center; padding: 40px 0; }
.change-pw-card { width: 100%; max-width: 460px; }
.change-pw-card h2 { margin-top: 0; }

/* ============ Admin ============ */
.admin-subnav { display: flex; gap: 8px; }
.admin-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 16px; align-items: start; }
.period-bar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.period-link {
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 13.5px;
}
.period-link:hover { border-color: var(--accent-secondary); color: var(--accent-secondary); text-decoration: none; }
.period-link.active { background: var(--accent-secondary); border-color: var(--accent-secondary); color: var(--text-inverse); }

.analytics-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }
.analytics-header { display: flex; gap: 14px; align-items: center; margin-bottom: 14px; }
.analytics-avatar {
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--accent-secondary);
  color: var(--text-inverse);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700;
  flex-shrink: 0;
}
.analytics-name { font-weight: 700; font-size: 16px; }
.analytics-stats { display: flex; gap: 24px; margin: 10px 0 4px; }
.analytics-stats div { display: flex; flex-direction: column; }
.analytics-stats strong { font-size: 24px; color: var(--accent-primary); letter-spacing: -.5px; }
.analytics-stats span { color: var(--text-muted); font-size: 12.5px; }
.recent-details { margin-top: 10px; border-top: 1px solid var(--border); padding-top: 8px; }
.recent-details summary { cursor: pointer; font-weight: 600; font-size: 13.5px; color: var(--accent-secondary); }
.recent-list { list-style: none; margin: 10px 0 0; padding: 0; }
.recent-list li { padding: 8px 0; border-bottom: 1px dashed var(--border); font-size: 13.5px; }
.recent-list li:last-child { border-bottom: none; }

/* ============ Misc ============ */
.empty-note { text-align: center; padding: 24px 12px !important; }
.link { font-weight: 500; }
.link:hover { text-decoration: underline; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .two-col, .student-layout, .admin-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .nav-inner { gap: 14px; flex-wrap: wrap; height: auto; padding: 10px 16px; }
  .container { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .stats-grid { grid-template-columns: 1fr; }
  .user-chip { display: none; }
  .page-header { align-items: flex-start; flex-direction: column; }
}

/* ===== Chat Widget ===== */
.chat-widget {
    display: grid;
    grid-template-columns: 240px 1fr;
    grid-template-rows: auto 1fr;
    height: 600px;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-card);
    margin-top: 1.5rem;
}
.chat-header {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}
.chat-header h4 { margin: 0; font-size: 0.95rem; }
.chat-header-actions { display: flex; gap: 0.5rem; align-items: center; }
.chat-scope-select { padding: 0.3rem 0.5rem; border-radius: 6px; border: 1px solid var(--input-border); font-size: 0.8rem; }

.chat-sidebar {
    border-right: 1px solid var(--border);
    overflow-y: auto;
    min-height: 0;
    background: var(--bg-secondary);
}
.chat-list { padding: 0.5rem; }
.chat-item {
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 0.25rem;
    transition: background 0.15s;
}
.chat-item:hover { background: var(--bg-hover); }
.chat-item.active { background: var(--accent-light); border-left: 3px solid var(--accent-secondary); }
.chat-item-title { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-item-meta { font-size: 0.7rem; color: var(--text-muted); display: flex; justify-content: space-between; margin-top: 0.2rem; }

.chat-main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.chat-messages {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.chat-empty { color: var(--text-muted); text-align: center; margin: auto; font-size: 0.9rem; }

.chat-msg { display: flex; gap: 0.6rem; max-width: 85%; }
.chat-msg-user { align-self: flex-end; flex-direction: row-reverse; }
.chat-msg-assistant { align-self: flex-start; }
.chat-msg-avatar { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1rem; background: var(--badge-bg); flex-shrink: 0; }
.chat-msg-user .chat-msg-avatar { background: var(--accent-light); }
.chat-msg-body { background: var(--bg-tertiary); padding: 0.6rem 0.9rem; border-radius: 12px; font-size: 0.88rem; line-height: 1.5; overflow-wrap: break-word; }
.chat-msg-body .chat-msg-content > :first-child { margin-top: 0; }
.chat-msg-body .chat-msg-content > :last-child { margin-bottom: 0; }
.chat-msg-user .chat-msg-body { background: var(--accent-secondary); color: var(--text-inverse); }
.chat-msg-user .chat-msg-body h1, .chat-msg-user .chat-msg-body h2, .chat-msg-user .chat-msg-body h3 { color: var(--text-inverse); }
.chat-msg-time { font-size: 0.65rem; color: var(--text-muted); margin-top: 0.3rem; }
.chat-msg-user .chat-msg-time { color: var(--text-inverse); opacity: .65; }

.chat-input-area {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}
.chat-input-row {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}
.chat-attach-btn {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border: 1px solid var(--input-border);
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    line-height: 1;
    padding: 0;
}
.chat-attach-btn:hover { border-color: var(--accent-secondary); color: var(--accent-secondary); background: var(--bg-hover); }

/* Pending draft attachments (chips above the input) */
.chat-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.chat-attachments:empty { display: none; }
.chat-attach-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.3rem 0.5rem;
    font-size: 0.78rem;
    max-width: 260px;
}
.chat-attach-chip .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-primary); }
.chat-attach-chip .size { color: var(--text-muted); flex-shrink: 0; }
.chat-attach-chip .f-icon { font-size: 0.95rem; line-height: 1; }
.chat-attach-chip.uploading { opacity: 0.6; }
.chat-attach-chip .remove {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1;
    padding: 0 2px;
    flex-shrink: 0;
}
.chat-attach-chip .remove:hover { color: var(--accent-primary); }

/* Files rendered inside a chat message */
.chat-msg-files {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 0.45rem;
}
.chat-msg-files:empty { display: none; margin: 0; }
.chat-file-chip {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.4rem 0.6rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.15s;
    max-width: 300px;
}
.chat-file-chip:hover { border-color: var(--accent-secondary); text-decoration: none; }
.chat-file-chip .f-icon { font-size: 1.25rem; flex-shrink: 0; line-height: 1; }
.chat-file-chip .f-name { font-weight: 600; font-size: 0.8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-file-chip .f-size { font-size: 0.7rem; color: var(--text-muted); flex-shrink: 0; }
.chat-file-chip .f-thumb { width: 30px; height: 30px; object-fit: cover; border-radius: 5px; flex-shrink: 0; }

/* User (right-aligned) file chips adapt to the inverted bubble */
.chat-msg-user .chat-file-chip {
    background: color-mix(in srgb, var(--text-inverse) 12%, transparent);
    border-color: color-mix(in srgb, var(--text-inverse) 25%, transparent);
    color: var(--text-inverse);
}
.chat-msg-user .chat-file-chip:hover { border-color: var(--text-inverse); }
.chat-msg-user .chat-file-chip .f-name { color: var(--text-inverse); }
.chat-msg-user .chat-file-chip .f-size { color: var(--text-inverse); opacity: 0.65; }

/* Drag-over highlight for the messages pane */
.chat-messages.dragging { outline: 2px dashed var(--accent-secondary); outline-offset: -6px; background: var(--accent-light); }

.chat-input-area textarea {
    flex: 1;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    resize: none;
    font-family: inherit;
}
.chat-input-area textarea:focus { outline: none; border-color: var(--accent-secondary); }

.chat-typing {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.typing-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent-primary);
    animation: pulse 1s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }

/* Live streaming assistant bubble: status line + progressive content */
.chat-msg-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}
.chat-msg-status:empty { display: none; }
.chat-msg-live .chat-msg-content:empty { display: none; }
.chat-msg-live .chat-msg-content .stream-cursor::after {
    content: '▍';
    color: var(--accent-primary);
    animation: pulse 1s infinite;
}

/* Responsive chat */
@media (max-width: 768px) {
    .chat-widget {
        grid-template-columns: 1fr;
        height: 480px;
    }
    .chat-sidebar { display: none; }
    .chat-header { grid-column: 1; }
}

/* ===== Knowledge Base (Phase 3) ===== */
.kb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.kb-header h1 { font-size: 1.6rem; color: var(--accent-secondary); margin: 0; }

.kb-search-bar {
    display: flex;
    gap: 0.75rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}
.kb-search-bar input[type="text"] {
    flex: 2;
    min-width: 250px;
    padding: 0.7rem 1rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 0.95rem;
}
.kb-search-bar select {
    padding: 0.7rem 0.9rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 0.9rem;
}
.kb-search-bar .btn { padding: 0.7rem 1.5rem; }

.kb-results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}
.kb-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    transition: box-shadow 0.2s;
    background: var(--bg-card);
}
.kb-card:hover { box-shadow: 0 4px 12px var(--shadow-md); }
.kb-card h3 { margin: 0 0 0.3rem; font-size: 1.05rem; }
.kb-card h3 a { color: var(--accent-secondary); text-decoration: none; }
.kb-card h3 a:hover { color: var(--accent-primary); }
.kb-card .kb-loc { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 0.6rem; }
.kb-card .kb-stats {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.6rem;
}
.kb-card .kb-stat {
    background: var(--code-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.kb-card .kb-programs {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.4;
}
.kb-card .kb-cost {
    margin-top: 0.5rem;
    font-size: 0.82rem;
    color: var(--accent-primary);
    font-weight: 600;
}
.kb-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 1rem;
    font-size: 1rem;
}
.kb-count { color: var(--text-muted); font-size: 0.85rem; margin-top: 1rem; }

/* KB Detail */
.kb-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}
.kb-detail-header h1 { margin: 0; font-size: 1.6rem; color: var(--accent-secondary); }
.kb-detail-header .kb-loc { font-size: 0.9rem; color: var(--text-muted); margin-top: 0.3rem; }
.kb-detail-actions { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.kb-detail-header .kb-rank {
    background: var(--accent-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.kb-back {
    display: inline-block;
    color: var(--accent-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    margin: 0.75rem 0 1.25rem;
}
.kb-back:hover { color: var(--accent-primary); }

.kb-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.25rem;
}
.kb-section {
    background: var(--bg-secondary);
    border-radius: 10px;
    padding: 1.25rem;
    border: 1px solid var(--border);
}
.kb-section h3 {
    margin: 0 0 0.75rem;
    font-size: 0.95rem;
    color: var(--accent-secondary);
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
}
.kb-section h3.kb-sub { margin-top: 1.2rem; }
.kb-section p, .kb-section li {
    font-size: 0.88rem;
    line-height: 1.6;
    color: var(--text-secondary);
}
.kb-section ul { padding-left: 1.2rem; margin: 0.5rem 0; }
.kb-programs-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.5rem;
}
.kb-programs-tags span {
    background: var(--accent-light);
    color: var(--accent-secondary);
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 500;
}
.kb-notes { margin-top: 0.5rem; }

.kb-similar { margin-top: 1.75rem; }
.kb-similar h3 { color: var(--accent-secondary); font-size: 1.05rem; border-bottom: 2px solid var(--border); padding-bottom: 0.5rem; }
.kb-similar-links { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.75rem; }
.kb-similar-links a {
    background: var(--accent-light);
    color: var(--accent-secondary);
    padding: 0.35rem 0.75rem;
    border-radius: 14px;
    font-size: 0.82rem;
    text-decoration: none;
    transition: background 0.15s;
}
.kb-similar-links a:hover { background: var(--bg-hover); }

/* KB Form */
.kb-form label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin: 14px 0 5px;
}
.kb-form input, .kb-form select, .kb-form textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 0.9rem;
    box-sizing: border-box;
    font-family: inherit;
}
.kb-form textarea { resize: vertical; }
.kb-form input:focus, .kb-form select:focus, .kb-form textarea:focus {
    outline: none;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(27,58,107,0.12);
}

/* ===== Enhanced KB Search ===== */
.kb-page-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}
.kb-page-layout.no-sidebar {
    grid-template-columns: 1fr;
}

/* Filter Sidebar */
.kb-filter-sidebar {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    height: fit-content;
    position: sticky;
    top: 80px;
}
.kb-filter-sidebar h4 {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.kb-filter-group {
    margin-bottom: 1.25rem;
}
.kb-filter-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}
.kb-filter-group select {
    width: 100%;
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 0.85rem;
    background: var(--bg-card);
}
.kb-filter-group .checkbox-list {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.kb-filter-group .checkbox-list label {
    font-weight: 400;
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    margin-bottom: 0;
}
.kb-filter-group .checkbox-list input[type="checkbox"],
.kb-filter-group .checkbox-list input[type="radio"] {
    accent-color: var(--accent-primary);
}
.kb-cost-range {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.kb-cost-range input {
    width: 100%;
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 0.82rem;
    min-width: 0;
}
.kb-cost-range span {
    font-size: 0.75rem;
    color: var(--text-muted);
    flex-shrink: 0;
}
#clear-filters {
    width: 100%;
    margin-top: 0.5rem;
}

/* Main Search Area */
.kb-main-area {}
.kb-search-top {
    margin-bottom: 1rem;
    position: relative;
}
.kb-search-top input[type="text"] {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.5rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    background: var(--input-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E") 0.8rem center no-repeat;
    box-sizing: border-box;
}
.kb-search-top input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(27,58,107,0.08);
}
.kb-results-count {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0.75rem 0;
}
.kb-results-count strong { color: var(--text-primary); }

/* Enhanced Cards */
.kb-card {
    position: relative;
}
.kb-card .kb-type-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--badge-bg);
    color: var(--text-secondary);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.kb-card .kb-card-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-light);
}
.kb-card .kb-card-actions .btn {
    flex: 1;
    text-align: center;
    font-size: 0.8rem;
    padding: 0.4rem 0.6rem;
}
.ask-ai-btn {
    flex: 1;
    text-align: center;
    background: var(--purple-bg);
    color: var(--purple-text);
    border: 1px solid var(--purple-border);
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.8rem;
    padding: 0.4rem 0.6rem;
    transition: background 0.15s;
}
.ask-ai-btn:hover {
    background: var(--purple-border);
}

/* Chat Panel on KB page */
.kb-chat-panel {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border);
}
.kb-chat-panel > h3 {
    font-size: 1.1rem;
    color: var(--accent-secondary);
    margin-bottom: 0.5rem;
}

/* Mobile */
@media (max-width: 768px) {
    .kb-page-layout {
        grid-template-columns: 1fr;
    }
    .kb-filter-sidebar {
        display: none;
        position: static;
    }
    .kb-filter-sidebar.open {
        display: block;
        margin-bottom: 1rem;
    }
    #filter-toggle {
        display: block;
        margin: 0.75rem 0;
    }
}
@media (min-width: 769px) {
    #filter-toggle { display: none; }
}

/* Chat Sources (Phase 5) */
.chat-msg-sources {
    margin-top: 0.5rem;
    padding-top: 0.4rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    align-items: center;
}
.chat-msg-user .chat-msg-sources {
    border-top-color: color-mix(in srgb, var(--text-inverse) 25%, transparent);
}
.sources-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
}
.chat-msg-user .sources-label { color: var(--text-inverse); opacity: .65; }
.source-tag {
    background: var(--accent-light);
    color: var(--accent-secondary);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 500;
}
.chat-msg-user .source-tag {
    background: color-mix(in srgb, var(--text-inverse) 15%, transparent);
    color: var(--text-inverse);
}

/* ============ Nav badge ============ */
.badge-red {
    background: var(--accent-primary);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.1rem 0.4rem;
    border-radius: 10px;
    margin-left: 0.3rem;
    display: inline-block;
    line-height: 1;
    vertical-align: middle;
}

/* ============ Login back link ============ */
.back-to-site {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: inline-block;
    margin: 0;
    width: max-content;
    color: var(--accent-secondary);
    font-size: 0.9rem;
}

/* ============ Inquiries ============ */
.inquiry-tabs {
    display: flex;
    gap: 0.5rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}
.inquiry-tab {
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.82rem;
    cursor: pointer;
    border: 1px solid var(--input-border);
    background: var(--bg-card);
    transition: all 0.15s;
    text-decoration: none;
    color: var(--text-primary);
}
.inquiry-tab:hover { background: var(--bg-hover); text-decoration: none; }
.inquiry-tab.active { background: var(--accent-secondary); color: var(--text-inverse); border-color: var(--accent-secondary); }
.inquiry-row-new { background: var(--danger-bg); }
table.data-table tr.inquiry-row-new:hover { background: var(--danger-bg) !important; cursor: pointer; }
.inquiry-status {
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}
.inquiry-status.new { background: var(--accent-primary); color: #fff; }
.inquiry-status.contacted { background: var(--purple-bg); color: var(--purple-text); }
.inquiry-status.meeting_set { background: var(--status-ok-bg); color: var(--success); }
.inquiry-status.in_progress { background: var(--status-warn-bg); color: var(--warning); }
.inquiry-status.closed { background: var(--status-neutral-bg); color: var(--text-muted); }

.inquiry-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}
.inquiry-info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}
.inquiry-info-row .k { color: var(--text-muted); }
.inquiry-info-row .v { font-weight: 600; text-align: right; word-break: break-word; }
.inquiry-message {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    margin: 1rem 0;
    white-space: pre-wrap;
    font-size: 0.92rem;
}
.inquiry-notes textarea {
    width: 100%;
    min-height: 140px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85rem;
    padding: 0.7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    resize: vertical;
}
@media (max-width: 700px) {
    .inquiry-detail-grid { grid-template-columns: 1fr; }
    .inquiry-info-row .v { text-align: left; }
}

/* ============ Theme toggle & language switcher (Phase 6B) ============ */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    transition: background 0.15s;
    line-height: 1;
}
.theme-toggle:hover { background: var(--bg-hover); }
[data-theme="dark"] .theme-icon-light { display: none; }
html:not([data-theme="dark"]) .theme-icon-dark { display: none; }

.lang-switch {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    margin-right: 0.5rem;
    align-items: center;
}
.lang-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.72rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    background: var(--bg-secondary);
    color: var(--text-muted);
    transition: all 0.15s;
}
.lang-btn.active {
    background: var(--accent-secondary);
    color: white;
}
.lang-btn:not(.active):hover {
    background: var(--bg-hover);
}
.nav-user { align-items: center; gap: 0.5rem; }

/* Scrollbars */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============ Teachers & language classes (teachers layer) ============ */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--modal-overlay);
  z-index: 1000;
  display: none;
  padding: 3vh 16px;
  overflow-y: auto;
}
.modal-overlay.open { display: flex; align-items: flex-start; justify-content: center; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  max-width: 980px;
  width: 100%;
  box-shadow: 0 24px 64px rgba(0,0,0,.25);
  overflow: hidden;
}
.modal-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
}
.modal-close {
  background: transparent; border: 1px solid var(--border); border-radius: 7px;
  color: var(--text-muted); padding: 4px 10px; cursor: pointer; font-size: 14px; line-height: 1.4;
}
.modal-close:hover { color: var(--text-primary); background: var(--bg-secondary); }
.modal .teacher-body { padding: 18px 20px 22px; }

.teacher-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.teacher-card {
  display: flex; flex-direction: column; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; cursor: pointer;
  transition: box-shadow .15s, border-color .15s;
}
.teacher-card:hover { box-shadow: 0 6px 20px var(--shadow-md); border-color: var(--accent-secondary); }
.teacher-card.inactive { opacity: .55; }
.teacher-card-top { display: flex; gap: 14px; align-items: flex-start; width: 100%; }
.teacher-card-actions { display: flex; gap: 6px; flex-wrap: wrap; border-top: 1px dashed var(--border); padding-top: 10px; width: 100%; }
.teacher-quick-stats { display: flex; gap: 18px; }
.teacher-quick-stats strong { display: block; font-size: 20px; color: var(--accent-primary); }
.teacher-quick-stats span { display: block; font-size: 12px; color: var(--text-muted); }

.teacher-info-row { display: flex; gap: 14px; align-items: center; margin-bottom: 18px; }
.teacher-section { border-top: 1px solid var(--border); padding-top: 14px; margin-top: 14px; }
.teacher-section h3 { margin: 0 0 10px; font-size: 15px; color: var(--accent-secondary); }

.week-grid { display: flex; flex-direction: column; gap: 6px; }
.week-col {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 12px; min-height: 0;
}
.week-col.today { border-color: var(--accent-primary); background: var(--danger-bg); }
.week-day {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  color: var(--text-muted); min-width: 60px; flex-shrink: 0;
  padding-top: 3px; letter-spacing: .4px;
}
.week-col .week-slots { flex: 1; min-width: 0; }
.week-slot {
  background: var(--bg-card); border: 1px solid var(--border);
  border-left: 3px solid var(--accent-secondary);
  border-radius: 6px; padding: 6px 10px; margin-bottom: 4px; font-size: 13px;
}
.week-slot:last-child { margin-bottom: 0; }
.week-slot a { font-weight: 600; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.week-slot .t { color: var(--text-muted); font-size: 12px; }
.week-slot.lang-english { border-left-color: var(--accent-secondary); }
.week-slot.lang-french { border-left-color: var(--purple-text); }
.week-slot.lang-korean { border-left-color: var(--accent-primary); }
.week-slot.lang-japanese { border-left-color: var(--status-cyan-text); }

.lang-tag {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  font-size: 11.5px; font-weight: 600; white-space: nowrap;
  background: var(--accent-light); color: var(--accent-secondary);
  margin-right: 4px; text-transform: capitalize;
}
.lang-tag.french { background: var(--purple-bg); color: var(--purple-text); }
.lang-tag.korean { background: var(--danger-bg); color: var(--accent-primary); }
.lang-tag.japanese { background: var(--status-cyan-bg); color: var(--status-cyan-text); }
.lang-tag.other { background: var(--badge-bg); color: var(--badge-text); }

.tclass-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.tclass-card { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; background: var(--bg-secondary); }
.tclass-card[data-class-url] { cursor: pointer; transition: box-shadow .15s, border-color .15s; }
.week-slot[data-class-url] { cursor: pointer; }
.week-slot:hover { box-shadow: 0 2px 8px var(--shadow-md); border-color: var(--accent-secondary); }

/* Time-based timeline layout for wide views (modal + /teachers/[id]) */
.week-slots.timeline {
  position: relative;
  min-height: 58px;
  margin-top: 4px;
  flex: 1; min-width: 0;
}
.week-slots.timeline .week-slot {
  position: absolute;
  top: 0;
  width: fit-content;
  max-width: 220px;
  margin-bottom: 0;
}
.tclass-card[data-class-url]:hover { box-shadow: 0 4px 14px var(--shadow-md); border-color: var(--accent-secondary); }
.tclass-card-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.tclass-next { font-size: 12px; color: var(--text-muted); margin-top: 6px; }
.tclass-past { list-style: none; margin: 0; padding: 0; }
.tclass-past li { display: flex; gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px dashed var(--border); flex-wrap: wrap; }
.tclass-past li:last-child { border-bottom: none; }

.sched-builder { display: flex; flex-direction: column; gap: 8px; margin-top: 6px; }
.sched-row { display: grid; grid-template-columns: 130px 1fr 1fr 36px; gap: 10px; align-items: center; padding: 6px 0; }
.sched-list { list-style: none; margin: 0; padding: 0; }
.sched-list li { display: flex; justify-content: space-between; gap: 10px; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.sched-list li:last-child { border-bottom: none; }
.sched-day { font-weight: 600; color: var(--accent-secondary); }

.roster-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 6px;
  max-height: 260px; overflow-y: auto;
  border: 1px solid var(--border); border-radius: 8px; padding: 10px;
  background: var(--bg-secondary); margin-top: 6px;
}
.roster-check { display: flex; gap: 8px; align-items: center; font-size: 13.5px; font-weight: 400; cursor: pointer; margin: 0; }
.lang-checks { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-top: 6px; }
.lang-checks .roster-check { font-weight: 400; }

.chip {
  display: inline-flex; gap: 6px; align-items: center;
  background: var(--accent-light); color: var(--accent-secondary);
  padding: 4px 10px; border-radius: 999px; font-size: 13px; margin: 4px; font-weight: 600;
}
.chip button { background: none; border: none; cursor: pointer; font-size: 12px; color: var(--accent-secondary); padding: 0 2px; line-height: 1; }
.guest-row { display: flex; gap: 8px; margin-top: 10px; }
.guest-row input { margin-top: 0; }

.att-seg { display: flex; gap: 6px; flex-wrap: wrap; }
.att-btn {
  padding: 4px 10px; font-weight: 500; font-size: 12.5px; border-radius: 6px;
  background: var(--bg-secondary); border: 1px solid var(--border);
  cursor: pointer; color: var(--text-secondary);
}
.att-btn:hover { border-color: var(--accent-secondary); }
.att-btn.att-active { background: var(--accent-secondary); color: var(--text-inverse); border-color: var(--accent-secondary); }
.att-btn.att-active-absent { background: var(--danger); color: var(--text-inverse); border-color: var(--danger); }
.att-btn.att-active-late { background: var(--warning); color: var(--text-inverse); border-color: var(--warning); }

.form-preview { margin-top: 10px; border-radius: 8px; border: 1px solid var(--border); padding: 12px; min-height: 60px; background: var(--bg-secondary); }
.field-label { display: block; font-weight: 600; font-size: 13.5px; margin-bottom: 6px; color: var(--text-primary); }
.form-card-wide { max-width: 860px; }
.stats-grid-4 { grid-template-columns: repeat(4, 1fr); }

.info-rows { display: flex; flex-direction: column; gap: 8px; }
.info-row { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; }
.info-row > span { color: var(--text-muted); }

@media (max-width: 768px) {
  .sched-row { grid-template-columns: 110px 1fr 1fr 30px; gap: 8px; }
  .stats-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   Mobile overflow hardening — single scrollable nav row,
   scrollable tables, tighter cards on small screens
   ============================================================ */

/* Table scroll wrapper (used around wide tables in templates) */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.table-scroll.wide > table { min-width: 640px; }
.table-scroll.mid > table { min-width: 540px; }

@media (max-width: 768px) {
  /* --- Top nav: brand + controls on row 1, nav-links as a single
        horizontally-scrollable row on row 2 (no wrap/stack) --- */
  .nav-inner {
    flex-wrap: wrap;
    height: auto;
    gap: 6px 14px;
    padding: 10px 12px;
  }
  .nav-links {
    order: 3;
    flex: 1 1 100%;
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 2px 2px 6px;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 7px 13px;
    font-size: 14px;
  }
  .nav-user { margin-left: auto; gap: 8px; }

  /* --- Tables: safety net — any card whose direct child is a table
        becomes horizontally scrollable (covers unwrapped tables) --- */
  .card:has(> table) {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* --- Tighten stat cards --- */
  .stat-card { padding: 14px 16px; }
  .stat-num { font-size: 27px; }
  .stats-grid, .stats-grid-4 { gap: 12px; }

  /* --- Header / misc tightening --- */
  .page-header h1 { font-size: 22px; }
  .admin-subnav { flex-wrap: wrap; }
  .teacher-quick-stats { flex-wrap: wrap; gap: 14px; }
  .teacher-info-row { flex-wrap: wrap; }
  .info-row { flex-wrap: wrap; }

  /* --- Schedule builder: keep 4 cols but let day select shrink --- */
  .sched-row { grid-template-columns: 96px 1fr 1fr 30px; gap: 6px; }


}

@media (max-width: 480px) {
  .sched-row { grid-template-columns: 84px 1fr 1fr 28px; gap: 6px; }
  .container { padding: 12px; }
  .card { padding: 14px; }
  .login-card { padding: 28px 22px; }
  .week-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Grid children must not expand to fit wide tables inside .table-scroll
   (grid/flex items default to min-width:auto, which would blow out the page) */
.two-col > *, .student-layout > *, .admin-grid > *, .kb-page-layout > * { min-width: 0; }

/* Schedule builder spacing */
#add-sched-row { margin-top: 14px; }

/* Clickable class rows in teachers classes table */
#classes-table tbody tr[data-class-url]:hover {
  background: var(--bg-secondary, #f5f5f7);
}

/* Center the X button in schedule rows */
.sched-row .btn-ghost { align-self: center; margin-top: 0; height: fit-content; }

/* ===== Dashboard chat-first layout (Phase 9b) =====
   On /dashboard only: chat sits at the top, spans the full viewport width
   (breaks out of the 1280px container) and fills the first viewport height. */
.dashboard-chat .chat-widget {
    width: calc(100vw - 48px);
    max-width: calc(100vw - 48px);
    margin-left: calc(50% - 50vw + 24px);
    margin-top: 0.75rem;
    height: calc(100vh - 160px);
    min-height: 540px;
}
@media (max-width: 980px) {
    .dashboard-chat .chat-widget {
        width: calc(100vw - 32px);
        max-width: calc(100vw - 32px);
        margin-left: calc(50% - 50vw + 16px);
        height: calc(100vh - 195px);
        min-height: 500px;
    }
}
@media (max-width: 768px) {
    .dashboard-chat .chat-widget {
        height: calc(100vh - 210px);
        min-height: 440px;
    }
}