/* =====================================================
   ΣΧΟΛΗ ΧΟΡΟΥ – Main Stylesheet
   ===================================================== */
:root {
  --sidebar-w: 240px;
  --sidebar-bg: #111827;
  --sidebar-hover: #1f2937;
  --sidebar-active: #4f6ef7;
  --accent: #4f6ef7;
  --accent-hover: #3b55d9;
  --accent-light: #eef1fe;
  --bg: #f3f4f6;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-2: #6b7280;
  --text-3: #9ca3af;
  --success: #22c55e;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --info: #3b82f6;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 4px 12px rgba(0,0,0,.08);
  --radius: 10px;
  --radius-sm: 6px;
  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

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

html { font-size: 15px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Sidebar ─────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0; top: 0;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-transition: -webkit-transform .25s ease;
          transition: transform .25s ease;
}

.sidebar-logo {
  padding: 24px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar-logo h1 {
  font-size: .95rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.sidebar-logo small {
  font-size: .72rem;
  color: rgba(255,255,255,.4);
  font-weight: 400;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.nav-section {
  padding: 14px 20px 4px;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: rgba(255,255,255,.3);
  text-transform: uppercase;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: rgba(255,255,255,.65);
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--sidebar-hover); color: #fff; text-decoration: none; }
.nav-item.active {
  background: rgba(79,110,247,.15);
  color: #fff;
  border-left-color: var(--accent);
}
.nav-item svg { flex-shrink: 0; opacity: .75; }
.nav-item.active svg { opacity: 1; }

/* ── Nav submenus ─────────────────────────────────── */
.nav-group-toggle {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: inherit;
  font-family: inherit;
  color: rgba(255,255,255,.6);
}
.nav-group-toggle:hover { color: #fff; }
.nav-sub {
  display: none;
  background: rgba(0,0,0,.15);
}
.nav-group.open .nav-sub { display: block; }
.nav-group.open .nav-chevron { transform: rotate(180deg); }
.nav-sub-item {
  padding-left: 36px !important;
  font-size: .83rem !important;
  border-left: none !important;
}
.nav-sub-item.active {
  background: rgba(79,110,247,.2);
  color: #fff;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.06);
  font-size: .75rem;
  color: rgba(255,255,255,.3);
}

/* ── Main content ────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Top bar ─────────────────────────────────────── */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}
.topbar-actions { display: flex; align-items: center; gap: 10px; }

/* ── Page content ────────────────────────────────── */
.page-content {
  padding: 28px;
  flex: 1;
}

/* ── KPI Cards ───────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.kpi-card .kpi-label {
  font-size: .75rem;
  color: var(--text-2);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.kpi-card .kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.kpi-card .kpi-sub {
  font-size: .78rem;
  color: var(--text-3);
}
.kpi-card.accent  { border-top: 3px solid var(--accent); }
.kpi-card.success { border-top: 3px solid var(--success); }
.kpi-card.danger  { border-top: 3px solid var(--danger); }
.kpi-card.warning { border-top: 3px solid var(--warning); }

/* ── Cards / Panels ──────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
}
.card-body { padding: 20px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }

/* ── Tables ──────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}
thead th {
  background: #f9fafb;
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  font-size: .75rem;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody tr { border-bottom: 1px solid #f3f4f6; transition: background .1s; }
tbody tr:hover { background: #fafafa; }
tbody tr:last-child { border-bottom: none; }
tbody td { padding: 12px 14px; vertical-align: middle; }
tbody td.mono { font-family: monospace; font-size: .82rem; }

/* ── Badges ──────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: .73rem;
  font-weight: 600;
}
.badge-success   { background: var(--success-bg); color: #15803d; border: 1px solid var(--success-border); }
.badge-danger    { background: var(--danger-bg);  color: #b91c1c; border: 1px solid var(--danger-border); }
.badge-warning   { background: var(--warning-bg); color: #92400e; border: 1px solid var(--warning-border); }
.badge-neutral   { background: #f3f4f6; color: var(--text-2); border: 1px solid var(--border); }
.badge-accent    { background: var(--accent-light); color: var(--accent); border: 1px solid #c7d0fd; }
.badge-info      { background: #e0f2fe; color: #0369a1; border: 1px solid #bae6fd; }
.badge-secondary { background: #f3f4f6; color: #4b5563; border: 1px solid #d1d5db; }

/* ── Buttons ─────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .15s;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: #f9fafb; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; }
.btn-sm { padding: 5px 10px; font-size: .78rem; }
.btn-icon { padding: 6px; border-radius: var(--radius-sm); background: none; border: none; cursor: pointer; color: var(--text-2); display: inline-flex; align-items: center; transition: all .15s; }
.btn-icon:hover { background: #f3f4f6; color: var(--text); }
.btn-icon.danger:hover { background: var(--danger-bg); color: var(--danger); }

/* ── Forms ───────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  margin-bottom: 5px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
}
.form-label .req { color: var(--danger); }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-family: var(--font);
  color: var(--text);
  background: var(--surface);
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,110,247,.12);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-hint { font-size: .75rem; color: var(--text-3); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

/* ── Modal ───────────────────────────────────────── */
.modal-backdrop {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  width: 100%;
  max-width: 600px;
  max-height: 92vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  animation: modalIn .18s ease;
}
.modal-lg { max-width: 820px; }
@keyframes modalIn { from { transform: translateY(16px); opacity: 0; } to { transform: none; opacity: 1; } }
.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-size: 1rem; font-weight: 700; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--text-2); padding: 4px; border-radius: 4px; transition: all .15s; }
.modal-close:hover { background: #f3f4f6; color: var(--text); }
.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ── Filters bar ─────────────────────────────────── */
.filters-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filters-bar .form-input,
.filters-bar .form-select { width: auto; }
.filters-bar .spacer { flex: 1; }

/* ── Alerts ──────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.alert-success { background: var(--success-bg); color: #15803d; border: 1px solid var(--success-border); }
.alert-danger   { background: var(--danger-bg);  color: #b91c1c; border: 1px solid var(--danger-border); }
.alert-warning  { background: var(--warning-bg); color: #92400e; border: 1px solid var(--warning-border); }
.alert-info     { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }

/* ── Toast ───────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast-msg {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  animation: toastIn .2s ease;
  max-width: 320px;
}
.toast-success { background: #111827; color: #fff; }
.toast-error   { background: var(--danger); color: #fff; }
@keyframes toastIn { from { transform: translateX(16px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ── Empty state ─────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-3);
}
.empty-state svg { opacity: .3; margin-bottom: 12px; }
.empty-state p { font-size: .9rem; }

/* ── Utility ─────────────────────────────────────── */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-2); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.fw-600 { font-weight: 600; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }
.mt-8  { margin-top: 8px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.flex-1 { flex: 1; }
.hidden { display: none !important; }

/* Ghost button (for cancel/secondary modal actions) */
.btn-ghost { background: none; border: 1px solid var(--border); color: var(--text-2); }
.btn-ghost:hover { background: #f3f4f6; color: var(--text); }

/* ── Nav badge (count pill on nav items) ─────────── */
.nav-badge {
  background: var(--danger);
  color: #fff;
  border-radius: 99px;
  padding: 1px 7px;
  font-size: .7rem;
  font-weight: 700;
  margin-left: auto;
  flex-shrink: 0;
}

/* ── System banners (impersonation / demo / trial) ── */
.sys-banner {
  padding: 8px 20px;
  font-size: .82rem;
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: 8px;
  margin: 0 0 12px;
  color: #fff;
}
.sys-banner a, .sys-banner button { flex-shrink: 0; }
.sys-banner-impersonate { background: #1d4ed8; }
.sys-banner-impersonate.warning { background: #b91c1c; }
.sys-banner-demo    { background: #7c3aed; }
.sys-banner-trial   { background: #2563eb; }
.sys-banner-trial.warning  { background: #d97706; }
.sys-banner-trial.danger   { background: #dc2626; }
.sys-banner-btn {
  background: rgba(255,255,255,.2);
  color: #fff;
  border-radius: 6px;
  padding: 4px 12px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: .8rem;
  margin-left: auto;
}
.sys-banner-btn:hover { background: rgba(255,255,255,.32); }

/* ── Language switcher ───────────────────────────── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: #f1f5f9;
  border-radius: 8px;
  padding: 2px;
}
.lang-btn {
  font-size: .72rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 6px;
  text-decoration: none;
  color: #64748b;
  transition: background .15s, color .15s;
}
.lang-btn.active {
  background: #fff;
  color: var(--accent, #4f6ef7);
  box-shadow: 0 1px 3px rgba(0,0,0,.1);
}
.lang-btn:hover:not(.active) {
  color: #1e293b;
  background: #e2e8f0;
  text-decoration: none;
}

/* ── Getting Started pulse animation ─────────────── */
@keyframes gsPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(1.4); }
}
.gs-pulse-dot {
  width: 8px;
  height: 8px;
  background: #f59e0b;
  border-radius: 50%;
  display: inline-block;
  animation: gsPulse 2s infinite;
  flex-shrink: 0;
}

/* ── FAB (Floating Quick Actions) ────────────────── */
.fab-wrap {
  position: fixed;
  bottom: 28px; right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column-reverse;
  align-items: flex-end;
  gap: 10px;
  pointer-events: none;
}
.fab-main {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--accent, #4f6ef7);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,.25);
  transition: transform .2s, background .2s;
  flex-shrink: 0;
  pointer-events: auto;
}
.fab-main:hover { background: var(--accent-hover, #3b5bd9); }
.fab-main.open  { transform: rotate(45deg); }
.fab-actions {
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .2s, transform .2s;
}
.fab-actions.open { opacity: 1; pointer-events: auto; transform: translateY(0); }
.fab-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  text-decoration: none;
}
.fab-item-btn {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,.18);
  transition: transform .15s, box-shadow .15s;
  flex-shrink: 0;
}
.fab-item:hover .fab-item-btn { transform: scale(1.1); box-shadow: 0 4px 12px rgba(0,0,0,.22); }
.fab-item-label {
  background: #1e293b;
  color: #fff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0,0,0,.2);
}
@media (max-width: 480px) { .fab-item-label { display: none; } }

/* ── Sidebar collapse (desktop) ──────────────────── */
body.sidebar-collapsed .sidebar {
  -webkit-transform: translateX(-100%);
          transform: translateX(-100%);
}
body.sidebar-collapsed .main {
  margin-left: 0;
}
/* Smooth transition on main when sidebar collapses – Safari-safe */
.main {
  -webkit-transition: margin-left .25s ease;
          transition: margin-left .25s ease;
}

/* Overlay behind sidebar on mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 99;
}
.sidebar-overlay.visible { display: block; }

/* ── Responsive ──────────────────────────────────── */

/* Prevent horizontal overflow globally */
html, body { overflow-x: hidden; max-width: 100%; }

/* Utility classes */
.hide-mobile  { /* hidden on ≤768px — see media query */ }
.show-mobile  { display: none !important; }

/* Tablet (768px – 1024px) */
@media (max-width: 1024px) {
  :root { --sidebar-w: 200px; }
  .page-content { padding: 20px; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

/* Mobile (≤ 768px) — sidebar slides off-canvas */
@media (max-width: 768px) {
  /* Show/hide utilities */
  .hide-mobile { display: none !important; }
  .show-mobile { display: initial !important; }

  /* Sidebar */
  .sidebar {
    transform: translateX(-100%);
    width: 260px;
    z-index: 200;
  }
  .sidebar.open { transform: translateX(0); }

  /* Main area takes full width */
  .main { margin-left: 0; }

  /* Topbar: show hamburger, tighten padding */
  .topbar { padding: 0 14px; }
  .topbar-hamburger { display: flex !important; }

  /* Page content */
  .page-content { padding: 12px; }

  /* Grids collapse to single column */
  .form-row,
  .form-row.cols-3,
  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }

  /* KPI grid: 2-up on phone */
  .kpi-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .kpi-card { padding: 14px 16px; }
  .kpi-card .kpi-value { font-size: 1.4rem; }

  /* Tables: card-style on mobile; non-card tables still need x-scroll */
  .table-wrap { overflow-x: auto; }
  table { min-width: 0 !important; width: 100%; }

  /* Card-style table rows */
  table.card-table { display: block !important; }
  table.card-table tbody { display: block; }
  table.card-table thead { display: none; }
  table.card-table tbody tr {
    display: block;
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 10px;
    background: #fff;
    overflow: hidden;
  }
  table.card-table tbody td {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 14px;
    border: none;
    border-bottom: 1px solid #f3f4f6;
    font-size: .85rem;
    text-align: left !important;
    white-space: normal !important;
  }
  table.card-table tbody td:last-child { border-bottom: none; }
  table.card-table tbody td::before {
    content: attr(data-label);
    font-weight: 700;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: #9ca3af;
    flex: 0 0 90px;
    padding-top: 2px;
  }
  table.card-table tbody td[data-label=""] {
    justify-content: flex-end;
    padding: 8px 10px;
    flex-wrap: wrap;
    gap: 6px;
  }
  table.card-table tbody td[data-label=""]::before { display: none; }
  table.card-table tbody td.td-actions {
    justify-content: flex-end;
    padding: 8px 10px;
    flex-wrap: wrap;
    gap: 6px;
  }
  table.card-table tbody td.td-actions::before { display: none; }

  /* Filters bar wraps */
  .filters-bar { gap: 6px; flex-wrap: wrap; }
  .filters-bar .btn { font-size: .78rem; padding: 6px 10px; }
  .filters-bar select,
  .filters-bar input[type="text"],
  .filters-bar input[type="search"] { min-width: 0; flex: 1; font-size: .85rem; }

  /* Page header: stack title + actions */
  .page-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 10px;
  }

  /* Modals: full-width on mobile, proper padding */
  .modal {
    width: calc(100vw - 24px) !important;
    max-width: calc(100vw - 24px) !important;
    margin: 0;
    max-height: 92vh;
    border-radius: 12px;
  }
  .modal-backdrop { padding: 12px; align-items: flex-end; }
  .modal-body { padding: 16px; }
  .modal-header { padding: 14px 16px; }
  .modal-footer {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }
  .modal-footer .btn { flex: 1; justify-content: center; min-width: 80px; }

  /* Touch targets: buttons should be at least 44px tall */
  .btn { min-height: 40px; }
  .btn-sm { min-height: 34px; padding: 6px 10px; }
  .btn-icon { min-height: 36px; min-width: 36px; justify-content: center; padding: 8px; }

  /* Cards */
  .card-header { flex-wrap: wrap; padding: 12px 14px; }
  .card-body { padding: 14px; }

  /* Student/item lists */
  .student-card { gap: 10px; padding: 12px 14px; }
  .student-actions { flex-wrap: wrap; }

  /* Typography */
  h2.page-title, .topbar-title { font-size: .95rem; }
  table { font-size: .82rem; }
  thead th { padding: 8px 10px; font-size: .69rem; }
  tbody td { padding: 10px 10px; }
}

/* Very small phones (≤ 400px) */
@media (max-width: 400px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .kpi-card .kpi-value { font-size: 1.25rem; }
  .topbar { height: 52px; }
  .badge { font-size: .68rem; padding: 2px 6px; }
  .page-content { padding: 10px; }
  .modal { width: calc(100vw - 16px) !important; max-width: calc(100vw - 16px) !important; }
  .modal-backdrop { padding: 8px; }
}

/* ── Chart canvas ────────────────────────────────── */
.chart-container { position: relative; width: 100%; }

/* ── Student card (list) ─────────────────────────── */
.student-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  transition: background .1s;
}
.student-card:last-child { border-bottom: none; }
.student-card:hover { background: #fafafa; }
.student-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .95rem;
  flex-shrink: 0;
}
.student-info { flex: 1; min-width: 0; }
.student-name { font-weight: 600; font-size: .9rem; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.student-meta { font-size: .78rem; color: var(--text-3); margin-top: 2px; }
.student-actions { display: flex; gap: 6px; }

/* ── Payment row amount colors ───────────────────── */
.amount-positive { color: var(--success); font-weight: 600; }
.amount-negative { color: var(--danger);  font-weight: 600; }

/* ── Birthday banner ─────────────────────────────── */
.birthday-banner {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: .85rem;
  color: #78350f;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

/* ── Debt indicator ──────────────────────────────── */
.debt-bar-wrap { display: flex; align-items: center; gap: 8px; }
.debt-bar-bg { flex: 1; height: 6px; border-radius: 99px; background: #e5e7eb; overflow: hidden; }
.debt-bar-fill { height: 100%; border-radius: 99px; background: var(--danger); transition: width .4s; }

/* ── Print ───────────────────────────────────────── */
@media print {
  .sidebar, .topbar, .btn, .filters-bar { display: none !important; }
  .main { margin-left: 0; }
  .page-content { padding: 0; }
  table { font-size: 11px; }
}

/* ── Dark mode ───────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:             #0f172a;
    --surface:        #1e293b;
    --border:         #334155;
    --text:           #f1f5f9;
    --text-2:         #94a3b8;
    --text-3:         #64748b;
    --sidebar-bg:     #0d1526;
    --sidebar-hover:  #1e293b;
    --success-bg:     #052e16;
    --success-border: #166534;
    --danger-bg:      #1f0f0f;
    --danger-border:  #7f1d1d;
    --warning-bg:     #1c1106;
    --warning-border: #78350f;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
    --shadow:    0 4px 12px rgba(0,0,0,.4);
  }
  :root:not([data-theme="light"]) thead th { background: #1a2540; }
  :root:not([data-theme="light"]) tbody tr:hover { background: #1e2d44; }
  :root:not([data-theme="light"]) .lang-switcher { background: #1e293b; }
  :root:not([data-theme="light"]) .lang-btn.active { background: #0f172a; }
  :root:not([data-theme="light"]) .btn-secondary { background: #1e293b; color: #f1f5f9; border-color: #334155; }
  :root:not([data-theme="light"]) .btn-secondary:hover { background: #273549; }
  :root:not([data-theme="light"]) .btn-ghost { background: transparent; border-color: #334155; color: #94a3b8; }
  :root:not([data-theme="light"]) .btn-ghost:hover { background: #1e293b; color: #f1f5f9; }
  :root:not([data-theme="light"]) .btn-icon:hover { background: #1e293b; }
  :root:not([data-theme="light"]) table.card-table tbody tr { background: #1e293b; }
  :root:not([data-theme="light"]) .modal-close:hover { background: #1e293b; }
  :root:not([data-theme="light"]) .fab-item-btn { background: #1e293b; }
  :root:not([data-theme="light"]) .toast-success { background: #f1f5f9; color: #0f172a; }
}
[data-theme="dark"] {
  --bg:             #0f172a;
  --surface:        #1e293b;
  --border:         #334155;
  --text:           #f1f5f9;
  --text-2:         #94a3b8;
  --text-3:         #64748b;
  --sidebar-bg:     #0d1526;
  --sidebar-hover:  #1e293b;
  --success-bg:     #052e16;
  --success-border: #166534;
  --danger-bg:      #1f0f0f;
  --danger-border:  #7f1d1d;
  --warning-bg:     #1c1106;
  --warning-border: #78350f;
}

/* ── Login page ──────────────────────────────────── */
.login-page-body {
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
}
.login-wrap { width: 100%; max-width: 400px; padding: 24px; }
.login-card {
  background: var(--surface);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--border);
}
.login-header {
  background: #111827;
  padding: 28px 32px;
  text-align: center;
}
.login-header h1 { color: #fff; font-size: 1.2rem; font-weight: 700; margin: 0 0 4px; }
.login-header p  { color: rgba(255,255,255,.5); font-size: .82rem; margin: 0; }
.login-body  { padding: 28px 32px 32px; }
.login-title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin: 0 0 6px; }
.login-sub   { font-size: .83rem; color: var(--text-3); margin: 0 0 22px; }
.login-footer {
  text-align: center;
  margin-top: 16px;
  font-size: .78rem;
  color: var(--text-3);
}
.login-footer a { color: var(--text-3); text-decoration: none; }
.login-footer a:hover { color: var(--accent); }
.pwd-wrap { position: relative; }
.pwd-wrap .form-input { padding-right: 42px; }
.pwd-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-3);
  padding: 0;
  line-height: 1;
  display: flex;
  align-items: center;
}
.pwd-toggle:hover { color: var(--text); }

/* ── Screen-reader only ──────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ── Utility helpers ─────────────────────────────── */
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-sm  { font-size: .85rem; }
.fs-xs  { font-size: .78rem; }
.fs-xxs { font-size: .75rem; }
.text-muted   { color: var(--text-3); }
.text-muted-2 { color: var(--text-2); }
.text-accent  { color: var(--accent); }
.nowrap { white-space: nowrap; }
.cursor-pointer { cursor: pointer; }

/* ── Detail section label (accordion rows etc.) ──── */
.detail-label {
  font-size: .68rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 4px;
}
.detail-value { color: var(--text); }

/* ── Pagination ──────────────────────────────────── */
.pagination-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: .82rem;
  color: var(--text-3);
}
.pagination-btns { display: flex; gap: 4px; }
.pagination-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: .8rem;
  text-decoration: none;
  transition: background .15s, border-color .15s;
}
.pagination-btn:hover  { background: var(--accent-light); border-color: var(--accent); }
.pagination-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; }
.pagination-btn.ellipsis { border: none; background: none; cursor: default; color: var(--text-3); }
.pagination-btn.ellipsis:hover { background: none; border: none; }

/* ── Submit-once guard ────────────────────────────── */
button[data-submitting] { opacity: .65; pointer-events: none; }

/* ── Card-header summary row ─────────────────────── */
.card-header-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: .82rem;
}

/* ── Inline link (phone, etc.) ───────────────────── */
.link-muted { color: var(--text-3); text-decoration: none; }
.link-muted:hover { color: var(--accent); }
.link-accent { color: var(--accent); text-decoration: none; }
.link-accent:hover { text-decoration: underline; }

/* ── Modal section heading label ─────────────────── */
.modal-section-label {
  font-size: .7rem;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 10px;
}
.modal-section-label.mt-16 { margin-top: 16px; }

/* ── Student row styles (moved from inline <style>) ─ */
.student-main-row:hover { background: var(--bg); }
.student-detail-row td  { border-bottom: 2px solid var(--border) !important; }
.guardian-sep { margin-top: 6px; padding-top: 5px; border-top: 1px solid var(--border); }

/* ── Filters form (flex row) ─────────────────────── */
.filters-form { display: flex; gap: 10px; flex-wrap: wrap; flex: 1; }

/* ── Auto-width select ───────────────────────────── */
.form-select-auto { width: auto; }

/* ── Lesson fee total box ────────────────────────── */
#lessonFeeTotal {
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--bg);
  border-radius: 8px;
  font-size: .85rem;
  color: var(--text);
}

/* ── Index / Dashboard ────────────────────────────────────────── */
.birthday-banner-pending {
  background: linear-gradient(135deg,#fef3c7,#fde68a);
  border-color: #f59e0b;
  color: #92400e;
}
.birthday-banner-pending a { color: #92400e; font-weight: 700; margin-left: 8px; }
.birthday-banner-today {
  background: linear-gradient(135deg,#e0f2fe,#bae6fd);
  border-color: #7dd3fc;
  color: #075985;
}
.getting-started-card { border-left: 4px solid #4f6ef7; margin-bottom: 24px; }
.gs-header { display: flex; justify-content: space-between; align-items: center; }
.gs-body   { padding: 16px 20px; }
.gs-progress-labels { display: flex; justify-content: space-between; font-size: .8rem; color: var(--text-3); margin-bottom: 6px; }
.gs-bar-bg  { height: 6px; background: #e5e7eb; border-radius: 3px; }
.gs-bar-fill { height: 6px; background: #4f6ef7; border-radius: 3px; transition: .3s; }
.gs-next { margin: 10px 0 0; font-size: .875rem; color: var(--text-2); }
.gs-next a { color: #4f6ef7; font-weight: 600; }
.kpi-diff-row  { display: flex; align-items: center; gap: 6px; }
.kpi-diff-val  { font-size: .75rem; font-weight: 700; }
.kpi-diff-pos  { color: #16a34a; }
.kpi-diff-neg  { color: #dc2626; }
.kpi-border-violet { border-top: 3px solid #8b5cf6; }
.kpi-value-pos  { color: #16a34a; }
.kpi-value-warn { color: #d97706; }
.kpi-value-neg  { color: #dc2626; }
.kpi-border-dynamic { border-top: 3px solid; }
.dash-section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.dash-chart-wrap { height: 220px; }
.dash-student-name { font-weight: 600; font-size: .85rem; word-break: break-word; }
.dash-payment-date { font-size: .75rem; color: var(--text-3); margin-top: 2px; }
.dash-payment-row  { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.dash-student-link { font-weight: 600; }
.dash-unpaid-count { font-size: .8rem; color: var(--text-3); }
.col-120 { width: 120px; }
.td-fw-600 { font-weight: 600; }
.td-text-2 { color: var(--text-2); }
.btn-xs { font-size: .75rem; padding: 4px 10px; }

/* ── Attendance page ──────────────────────────────────────────── */
.page-title-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.page-title     { font-size: 1.4rem; font-weight: 700; color: var(--text); }
.att-filters-card { padding: 20px; margin-bottom: 20px; }
.att-filters-form { display: flex; flex-wrap: wrap; gap: 14px; align-items: flex-end; }
.att-form-group-flex { flex: 1; min-width: 200px; }
.att-form-group-fixed { min-width: 160px; }
.lesson-info-bar {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 18px;
  margin-bottom: 20px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}
.lesson-info-bar .lesson-name  { font-weight: 700; color: var(--text); }
.lesson-info-bar .lesson-meta  { color: var(--text-3); }
.lesson-info-bar .badge-ml-auto { margin-left: auto; }
.att-layout { display: grid; grid-template-columns: 1fr 320px; gap: 20px; align-items: start; }
.att-card-inner { padding: 0; overflow: hidden; }
.att-card-header { padding: 14px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.att-card-title  { font-weight: 700; font-size: .95rem; }
.att-card-actions { display: flex; gap: 8px; }
.att-card-body   { padding: 0; }
.att-student-row {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 20px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background .1s;
}
.att-student-row:last-child { border-bottom: none; }
.att-student-row:hover { background: var(--bg); }
.att-checkbox { width: 18px; height: 18px; accent-color: var(--accent); flex-shrink: 0; }
.att-student-name { flex: 1; font-weight: 500; color: var(--text); }
.att-status-yes   { font-size: .72rem; color: #16a34a; }
.att-status-no    { font-size: .72rem; color: #dc2626; }
.att-status-new   { font-size: .72rem; color: #94a3b8; }
.att-card-footer  { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }
.att-history-card { padding: 0; overflow: hidden; }
.att-history-title { padding: 14px 20px; border-bottom: 1px solid var(--border); font-weight: 700; font-size: .88rem; }
.att-history-empty { padding: 20px; color: var(--text-3); font-size: .85rem; text-align: center; }
.att-history-scroll { overflow-x: auto; }
.att-history-table { width: 100%; border-collapse: collapse; font-size: .83rem; }
.att-history-thead { background: var(--bg); }
.att-th { padding: 8px 14px; text-align: left; font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--text-3); border-bottom: 1px solid var(--border); }
.att-th-center { text-align: center; }
.att-tr { border-bottom: 1px solid var(--border); }
.att-td { padding: 8px 14px; }
.att-td-center { text-align: center; }
.att-date-link { color: var(--accent); text-decoration: none; font-weight: 500; }
.att-present-pos  { font-weight: 700; color: #16a34a; }
.att-present-zero { font-weight: 700; color: #dc2626; }
.att-present-mid  { font-weight: 700; color: #d97706; }
.att-stats-card   { padding: 16px 20px; margin-top: 12px; }
.att-stats-label  { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); margin-bottom: 8px; }
.att-stats-pct    { font-size: 1.6rem; font-weight: 900; color: var(--accent); }
.att-stats-sub    { font-size: .8rem; color: var(--text-3); }
.att-stats-bar-bg { background: var(--border); border-radius: 4px; height: 6px; margin-top: 10px; overflow: hidden; }
.att-stats-bar-fill { background: var(--accent); height: 100%; border-radius: 4px; }
.att-empty-card   { padding: 40px; text-align: center; color: var(--text-3); }
.att-empty-icon   { font-size: 2.5rem; margin-bottom: 12px; }
.att-empty-title  { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.att-empty-sub    { font-size: .88rem; }

/* ── Expenses page ────────────────────────────────────────────── */
.expenses-budget-card { margin-top: 20px; }
.budget-card-header-sub { font-size: .82rem; color: var(--text-3); }
.budget-card-body-flush { padding: 0; }
.budget-totals { padding: 16px 20px; }
.budget-cat-row { margin-bottom: 14px; }
.budget-cat-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.budget-cat-name  { font-size: .83rem; font-weight: 600; color: var(--text); }
.budget-cat-meta  { font-size: .78rem; color: var(--text-3); }
.budget-over  { color: #dc2626; font-weight: 700; }
.budget-under { color: #16a34a; }
.budget-na    { color: var(--text-3); }
.budget-bar-bg   { background: #e5e7eb; border-radius: 4px; height: 8px; overflow: hidden; }
.budget-bar-fill { height: 100%; border-radius: 4px; transition: .3s; }
.budget-details  { border-top: 1px solid var(--border); padding: 0; }
.budget-details > summary {
  padding: 12px 20px; cursor: pointer;
  font-size: .83rem; font-weight: 600; color: var(--accent);
  list-style: none; display: flex; align-items: center; gap: 6px;
}
.budget-form { padding: 16px 20px; }
.budget-form-month-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.budget-form-month-label { font-size: .82rem; font-weight: 600; color: var(--text-2); }
.budget-table { width: 100%; border-collapse: collapse; font-size: .83rem; }
.budget-th { padding: 6px 8px; text-align: left; color: var(--text-3); font-size: .75rem; font-weight: 600; }
.budget-th-right { text-align: right; }
.budget-td { padding: 5px 8px; }
.budget-td-right { text-align: right; }
.budget-input-right { width: 120px; text-align: right; }
.budget-form-actions { margin-top: 12px; }
.expenses-td-sm    { font-size: .85rem; }
.expenses-td-note  { font-size: .82rem; color: var(--text-3); }

/* ── Enrollments page ─────────────────────────────────────────── */
.enroll-no-lessons { padding: 20px; }
.enroll-no-lessons p { color: var(--text-3); }
.enroll-tabs-wrap { display: flex; flex-wrap: wrap; gap: 0; border-bottom: 2px solid var(--border); padding: 0 4px; overflow-x: auto; }
.enroll-tab-btn {
  padding: 10px 16px; border: none; background: none; cursor: pointer;
  font-size: .85rem; font-weight: 600;
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  white-space: nowrap; transition: .15s; position: relative;
  color: var(--text-3);
}
.enroll-tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.enroll-tab-badge {
  display: inline-flex; align-items: center; justify-content: center;
  background: #e5e7eb; color: var(--text-3);
  font-size: .65rem; font-weight: 700; border-radius: 99px;
  padding: 1px 6px; margin-left: 6px; min-width: 18px;
}
.enroll-tab-badge.active { background: var(--accent); color: #fff; }
.enroll-panel { padding: 14px 16px; display: none; flex-wrap: wrap; gap: 8px; }
.enroll-panel.active { display: flex; }
.enroll-lesson-btn {
  display: flex; flex-direction: column; align-items: flex-start;
  padding: 10px 14px; min-width: 130px; max-width: 200px;
  text-align: left; text-decoration: none;
}
.enroll-lesson-name { font-weight: 700; font-size: .85rem; }
.enroll-lesson-time { font-size: .72rem; opacity: .75; margin-top: 2px; }
.enroll-lesson-count { font-size: .72rem; margin-top: 2px; opacity: .6; }
/* Empty lessons state */
.enroll-no-lessons { padding: 20px; }
/* Roster card */
.enroll-lesson-meta    { font-size: .8rem; color: var(--text-3); margin-top: 2px; }
.enroll-header-actions { display: flex; align-items: center; gap: 10px; }
.enroll-search-input   { width: 200px; padding: 6px 10px; font-size: .85rem; }
/* Toolbar above student grid */
.enroll-toolbar      { padding: 12px 20px; background: var(--bg); border-bottom: 1px solid var(--border); display: flex; gap: 12px; align-items: center; }
.enroll-toolbar-hint { font-size: .82rem; color: var(--text-3); margin-left: auto; }
/* Student grid */
.enroll-selected-header { padding: 14px 20px; border-bottom: 1px solid var(--border); }
.enroll-selected-meta  { font-size: .8rem; color: var(--text-3); margin-top: 2px; }
.enroll-actions-row    { display: flex; align-items: center; gap: 10px; }
.enroll-students-grid  { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: 1px; background: var(--border); }
.enroll-student-row {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; background: var(--surface);
  cursor: pointer; transition: background .12s;
}
.enroll-student-row:hover   { background: var(--bg); }
.enroll-student-row.enrolled { background: #f0fdf4; }
@media (prefers-color-scheme: dark) { .enroll-student-row.enrolled { background: #052e16; } }
[data-theme="dark"] .enroll-student-row.enrolled { background: #052e16; }
.enroll-student-checkbox { width: 18px; height: 18px; accent-color: var(--accent); flex-shrink: 0; }
.enroll-student-info { flex: 1; min-width: 0; }
.enroll-student-name  { font-weight: 600; font-size: .9rem; color: var(--text); }
.enroll-student-group { font-size: .76rem; color: var(--text-3); }
.enroll-status-yes    { font-size: .75rem; font-weight: 600; color: #22c55e; }
.enroll-status-no     { font-size: .75rem; font-weight: 600; color: var(--border); }
/* Form footer */
.enroll-form-footer   { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }
.enroll-modal-footer  { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

@media (max-width: 768px) {
  .att-layout { grid-template-columns: 1fr; }
  .enroll-students-grid { grid-template-columns: 1fr; }
}