/* School Manager — design system | Plus Jakarta Sans font */
html { overflow-x: hidden; }
html, body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { overflow-x: hidden; max-width: 100vw; }
input, select, textarea, button { font-family: inherit; }

/* ── Page transitions ── */
body { animation: pageIn .2s ease; }
@keyframes pageIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeUp  { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideIn { from { transform: translateX(-100%); } to { transform: translateX(0); } }
@keyframes pulse   { 0%,100% { opacity:1; } 50% { opacity:.5; } }

/* ── Inputs ── */
.input {
  width: 100%;
  padding: 0.65rem 1rem;
  background: #f9fafb;
  border: 1.5px solid #e5e7eb;
  border-radius: 0.875rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #111827;
  transition: border-color .18s, box-shadow .18s, background .18s;
}
.input:focus { outline: none; background: white; border-color: #111827; box-shadow: 0 0 0 3px rgba(17,24,39,.09); }
.input:hover:not(:focus) { background: white; border-color: #c9d0dc; }
.input::placeholder { color: #9ca3af; font-weight: 400; }
select.input { cursor: pointer; }
.label { display:block; font-size: 0.8125rem; font-weight:700; color: #374151; margin-bottom: 0.375rem; letter-spacing: 0.01em; }

/* ── Buttons ── */
.btn { display:inline-flex; align-items:center; gap:.5rem; padding:.625rem 1rem; border-radius:.75rem; font-size:.875rem; font-weight:700; transition: all .15s; cursor:pointer; border:none; line-height:1; white-space:nowrap; }
.btn:active { transform: scale(.97); }
.btn-sm { padding:.4rem .75rem; font-size:.8125rem; }
.btn-primary { background: #111827; color: white; }
.btn-primary:hover { background: #1f2937; box-shadow: 0 4px 12px rgba(17,24,39,.25); }
.btn-secondary { background: white; color: #374151; border: 1px solid #e5e7eb; }
.btn-secondary:hover { background: #f9fafb; border-color: #d1d5db; }
.btn-danger { background: #f43f5e; color: white; }
.btn-danger:hover { background: #e11d48; box-shadow: 0 4px 12px rgba(244,63,94,.25); }
.btn-ghost { background: transparent; color: #6b7280; border:1px solid transparent; }
.btn-ghost:hover { background: #f3f4f6; color: #111827; }
.btn-outline { background: transparent; color: #1a1a1a; border: 1.5px solid #1a1a1a; }
.btn-outline:hover { background: #1a1a1a; color: white; }
.btn-success { background: #10b981; color: white; }
.btn-success:hover { background: #059669; }

/* ── Cards ── */
.card { background: white; border: 1px solid #e5e7eb; border-radius: 1rem; transition: box-shadow .2s; }
.card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.06); }
.card-pad { padding: 1.25rem; }
.card-sm { padding: .875rem 1rem; }
.card-hover { cursor: pointer; }
.card-hover:hover { border-color: #d1d5db; box-shadow: 0 6px 20px rgba(0,0,0,.08); transform: translateY(-1px); }

/* ── Tables ── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data { width:100%; border-collapse: collapse; font-size: .875rem; }
table.data thead th { text-align:left; padding: .75rem 1rem; background: #f9fafb; color: #6b7280; font-weight:700; font-size:.75rem; text-transform:uppercase; letter-spacing:.06em; border-bottom:1px solid #e5e7eb; white-space:nowrap; }
table.data tbody td { padding: .875rem 1rem; border-bottom: 1px solid #f3f4f6; color: #111827; vertical-align: middle; font-weight: 500; }
table.data tbody tr { transition: background .12s; }
table.data tbody tr:hover { background: #f9fafb; }
table.data tbody tr:last-child td { border-bottom: 0; }

/* ── Badges ── */
.badge { display:inline-flex; align-items:center; gap:.25rem; padding:.2rem .65rem; border-radius:9999px; font-size:.7rem; font-weight:700; letter-spacing: 0.02em; }
.badge-green  { background:#dcfce7; color:#166534; }
.badge-red    { background:#fee2e2; color:#991b1b; }
.badge-amber  { background:#fef3c7; color:#92400e; }
.badge-blue   { background:#dbeafe; color:#1e40af; }
.badge-purple { background:#f3e8ff; color:#6b21a8; }
.badge-gray   { background:#f3f4f6; color:#374151; }

/* ── Status badges for assignments/homework ── */
.status-submitted    { background:#dcfce7; color:#166534; }
.status-late         { background:#fef3c7; color:#92400e; }
.status-not_submitted { background:#fee2e2; color:#991b1b; }

/* ── Avatars ── */
.avatar { display:grid; place-items:center; font-weight:800; color:white; background:#1a1a1a; border-radius:50%; }
.avatar-sq { border-radius:.625rem; }

/* ── Role badges ── */
.role-admin { background:#fef3c7; color:#92400e; }
.role-teacher { background:#dbeafe; color:#1e40af; }
.role-coordinator { background:#f3e8ff; color:#6b21a8; }

/* ── Sidebar (dark premium) ── */
.sidebar-dark {
  background: #0f1623;
  border-right: 1px solid rgba(255,255,255,.06);
}
.sidebar-logo-border { border-bottom: 1px solid rgba(255,255,255,.07); }
.sidebar-footer-border { border-top: 1px solid rgba(255,255,255,.07); }
.sidebar-section-head {
  font-size: .625rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: rgba(255,255,255,.28);
  padding: 0 .75rem;
  margin-top: 1.25rem;
  margin-bottom: .375rem;
}
.sidebar-section-head:first-child { margin-top: .25rem; }
.sidebar-nav-item {
  color: rgba(255,255,255,.65);
}
.sidebar-nav-item:hover {
  background: rgba(255,255,255,.07);
  color: #fff;
}
.sidebar-nav-item:hover i { color: rgba(255,255,255,.8) !important; }
.sidebar-nav-active {
  background: #ffffff;
  color: #111827;
  box-shadow: 0 2px 8px rgba(0,0,0,.35);
}

/* ── Nav active state (legacy) ── */
.nav-item-active { background: #111827 !important; color: #fff !important; }
.nav-item-active .nav-icon { color: #fff !important; }
.nav-link { transition: all .15s; }

/* ── Section header (legacy) ── */
.section-head { font-size:.6875rem; font-weight:800; text-transform:uppercase; letter-spacing:.1em; color:#9ca3af; padding: 0 .75rem; margin-top:1.25rem; margin-bottom:.25rem; }
.section-head:first-child { margin-top:.25rem; }

/* ── Attendance quick-buttons ── */
.att-opt { width:2.25rem; height:2.25rem; display:grid; place-items:center; border-radius:.625rem; font-size:.8125rem; font-weight:800; border:1.5px solid #e5e7eb; color:#9ca3af; cursor:pointer; transition:all .12s; user-select:none; }
.att-opt:hover { transform: scale(1.08); }
.att-opt.is-p { background:#111827; color:white; border-color:#111827; }
.att-opt.is-a { background:#f43f5e; color:white; border-color:#f43f5e; }
.att-opt.is-l { background:#3b82f6; color:white; border-color:#3b82f6; }
.att-opt.is-la { background:#f59e0b; color:white; border-color:#f59e0b; }

/* ── Chart wrapper ── */
.chart-wrap { position:relative; height:220px; }
.chart-wrap-sm { position:relative; height:160px; }
.chart-wrap-lg { position:relative; height:280px; }

/* ── Stat cards ── */
.stat-number { font-size:1.875rem; font-weight:800; color:#111827; line-height:1; }
.stat-label { font-size:.6875rem; font-weight:800; color:#6b7280; text-transform:uppercase; letter-spacing:.07em; }
.stat-sub { font-size:.8125rem; color:#9ca3af; margin-top:.25rem; font-weight: 500; }
.stat-icon { width:2.5rem; height:2.5rem; border-radius:.75rem; display:grid; place-items:center; }

/* ── Alert strip ── */
.alert-item { display:flex; gap:.75rem; align-items:flex-start; padding:.75rem; border-radius:.75rem; border:1px solid; animation: fadeUp .2s ease; }
.alert-danger { background:#fff1f2; border-color:#fecdd3; color:#9f1239; }
.alert-warn { background:#fffbeb; border-color:#fde68a; color:#92400e; }
.alert-info { background:#eff6ff; border-color:#bfdbfe; color:#1e40af; }
.alert-success { background:#f0fdf4; border-color:#bbf7d0; color:#166534; }

.modal-overlay { background: rgba(0,0,0,.4); backdrop-filter: blur(4px); }

/* ── Tab bar ── */
.tab-bar { display:flex; gap:.25rem; background:#f3f4f6; border-radius:1rem; padding:.25rem; overflow-x:auto; }
.tab-btn { display:inline-flex; align-items:center; gap:.4rem; padding:.5rem .875rem; border-radius:.75rem; font-size:.8125rem; font-weight:700; white-space:nowrap; color:#6b7280; cursor:pointer; transition:all .15s; border:none; background:transparent; }
.tab-btn.active { background:#111827; color:#fff; box-shadow:0 2px 8px rgba(17,24,39,.25); }
.tab-btn.active svg, .tab-btn.active i { color:#fff !important; }

/* ── Pagination ── */
.pg-btn { display:inline-flex; align-items:center; justify-content:center; width:2rem; height:2rem; border-radius:.5rem; font-size:.875rem; font-weight:700; border:1px solid #e5e7eb; color:#374151; cursor:pointer; transition:all .12s; }
.pg-btn:hover, .pg-btn.pg-active { background:#111827; color:white; border-color:#111827; }

/* ── Progress bar ── */
.progress { height:6px; background:#f3f4f6; border-radius:9999px; overflow:hidden; }
.progress-fill { height:100%; border-radius:9999px; transition: width .6s ease; }

/* ── Mobile bottom navigation ── */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: white;
  border-top: 1px solid #e5e7eb;
  padding: 0.5rem 0;
  padding-bottom: env(safe-area-inset-bottom, 0.5rem);
}
.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.375rem 0.5rem;
  border-radius: 0.5rem;
  color: #9ca3af;
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all .15s;
  text-decoration: none;
  flex: 1;
}
.bottom-nav-item.active { color: #111827; }
.bottom-nav-item i { width: 1.25rem; height: 1.25rem; }

/* ── Class overview cards ── */
.class-card { cursor: pointer; transition: all .2s; border: 1px solid #e5e7eb; border-radius: 1rem; padding: 1.25rem; background: white; }
.class-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,.1); transform: translateY(-2px); border-color: #d1d5db; }

/* ── Skeleton loading ── */
.skeleton { background: linear-gradient(90deg, #f3f4f6 25%, #e5e7eb 50%, #f3f4f6 75%); background-size: 200% 100%; animation: skeleton 1.5s infinite; border-radius: 0.5rem; }
@keyframes skeleton { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Drawer / slide panel ── */
.drawer { position: fixed; inset-y: 0; right: 0; width: min(100%, 480px); background: white; box-shadow: -8px 0 32px rgba(0,0,0,.12); z-index: 60; transform: translateX(100%); transition: transform .25s cubic-bezier(.4,0,.2,1); overflow-y: auto; }
.drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 59; opacity: 0; pointer-events: none; transition: opacity .25s; }
.drawer-overlay.open { opacity: 1; pointer-events: all; }

/* ── PTM status ── */
.ptm-attended { background:#dcfce7; color:#166534; }
.ptm-absent { background:#fee2e2; color:#991b1b; }

/* ── Button self-sizing (prevent stretch in flex-col containers) ── */
.btn { align-self: start; }
.btn.w-full, button[style*="width:100%"] { align-self: stretch; }

/* ── Grade config rows ── */
.grade-row input { font-size: .875rem; padding: .375rem .625rem; border-radius: .5rem; border: 1px solid #e5e7eb; font-weight: 600; }
.grade-row input:focus { outline: none; border-color: #111827; }

@media (max-width: 1023px) {
  .bottom-nav { display: flex; }
  main { padding-bottom: 5rem !important; }
}

/* ── Mobile-safe layout helpers ── */
@media (max-width: 639px) {
  /* Prevent fixed-width inputs from overflowing containers */
  .grade-row input { width: 100%; min-width: 0; }

  /* Page-level filter grids: 1 col on xs */
  .filter-bar { grid-template-columns: 1fr !important; }

  /* Card action headers */
  .card-head { flex-wrap: wrap; gap: .5rem; }

  /* Stat number shrinks on very small screens */
  .stat-number { font-size: 1.5rem; }

  /* Attendance quick-option buttons: ensure they don't stretch */
  .att-opts { gap: .25rem; }
  .att-opt { width: 2rem; height: 2rem; font-size: .75rem; }

  /* Tab bars: scroll horizontally on mobile */
  .tab-bar { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Forms with inline elements: allow wrapping */
  form.flex { flex-wrap: wrap; }

  /* Ensure buttons inside flex forms don't stretch full width */
  form .btn { align-self: flex-start; }
}

@media print {
  @page { margin: 10mm; }
  aside, header, nav, .no-print, .bottom-nav, .print-controls { display:none !important; }
  body { background: white !important; }
  main { padding: 0 !important; }
  .card { box-shadow: none !important; border: 1px solid #e5e7eb !important; page-break-inside: avoid; }
  table { page-break-inside: auto; }
  tr { page-break-inside: avoid; page-break-after: auto; }
  thead { display: table-header-group; }
  a { text-decoration: none !important; color: inherit !important; }
  .btn, button { display: none !important; }
}