/* ============================================================
 * app.css — Zetclass UI.
 * Deep-teal brand + warm gold accent. Modern, soft-shadowed,
 * mobile-first, accessible. System fonts for low bandwidth.
 * ============================================================ */
:root {
  --teal: #0f5e5e;
  --teal-dark: #0a4747;
  --teal-deep: #063a3a;
  --teal-light: #e6f2f1;
  --teal-mid: #14807f;
  --gold: #e0ab2b;
  --gold-dark: #c4940f;
  --gold-soft: #f6ead0;
  --sec2: #1c6b6b;
  --sec2-dark: #124545;
  --bg: #f4f6f5;
  --card: #ffffff;
  --ink: #1c2726;
  --muted: #5f6f6e;
  --line: #e6e6df;
  --line-soft: #eef0ec;
  --ok: #1f7a4d;
  --danger: #c0402f;
  --warn: #b8860b;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(16,40,40,.05), 0 2px 8px rgba(16,40,40,.06);
  --shadow-lg: 0 10px 30px rgba(10,50,50,.14);
  --shadow-hover: 0 8px 22px rgba(15,94,94,.16);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg); color: var(--ink); font-size: 15px; line-height: 1.5;
  -webkit-text-size-adjust: 100%; -webkit-font-smoothing: antialiased;
}
a { color: var(--teal); }
h1, h2, h3, h4 { color: var(--teal-dark); line-height: 1.25; margin: 0 0 .5rem; letter-spacing: -.01em; }
h1 { font-size: 1.5rem; font-weight: 700; } h2 { font-size: 1.18rem; } h3 { font-size: 1.03rem; }
::selection { background: var(--gold-soft); }

/* ---- App shell ---- */
.topbar {
  position: sticky; top: 0; z-index: 40; display: flex; align-items: center; gap: .6rem;
  background: linear-gradient(100deg, var(--teal-dark), var(--teal) 55%, var(--teal-mid));
  color: #fff; padding: .65rem .9rem; box-shadow: 0 2px 10px rgba(6,58,58,.25);
}
.topbar .menu-btn { background: transparent; border: 0; color: #fff; font-size: 1.5rem; cursor: pointer; padding: .1rem .4rem; line-height: 1; border-radius: 8px; }
.topbar .menu-btn:hover { background: rgba(255,255,255,.12); }
.topbar .school-name { font-weight: 600; font-size: 1.05rem; letter-spacing: -.01em; }
.topbar .school-name small { display:block; font-weight: 400; opacity:.82; font-size:.7rem; }
.topbar .spacer { flex: 1; }
.topbar .role-pill { background: rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.18); color:#fff; padding:.35rem .8rem; border-radius: 999px; font-size:.82rem; cursor:pointer; font-weight:600; transition:.15s; }
.topbar .role-pill:hover { background: rgba(255,255,255,.28); }

.layout { display: flex; min-height: calc(100vh - 50px); }

.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; width: 244px;
  background: linear-gradient(180deg, var(--teal-deep), var(--teal-dark));
  color: #d7e6e4; z-index: 60; transform: translateX(-100%); transition: transform .22s ease;
  display: flex; flex-direction: column; padding-top: .5rem; overflow-y:auto;
}
.sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
.sidebar .brand { padding: 1rem 1.1rem .85rem; color:#fff; font-weight:700; font-size:.92rem; letter-spacing:.02em; border-bottom:1px solid rgba(255,255,255,.08); }
.sidebar nav { padding: .5rem .5rem; display:flex; flex-direction:column; gap:2px; }
.sidebar a {
  display: flex; align-items:center; gap:.7rem; padding: .62rem .8rem; color: #cfe2e0; text-decoration: none;
  font-size: .92rem; border-radius: 10px; transition: background .15s, color .15s;
}
.sidebar a .ico { width: 1.3rem; text-align:center; opacity:.92; font-size:1rem; }
.sidebar a:hover { background: rgba(255,255,255,.07); color:#fff; }
.sidebar a.active { background: linear-gradient(90deg, rgba(224,171,43,.22), rgba(255,255,255,.06)); color:#fff; box-shadow: inset 3px 0 0 var(--gold); }
.sidebar a .soon { margin-left:auto; font-size:.62rem; background: var(--gold-soft); color:#7a5b09; padding:.05rem .35rem; border-radius:4px; }
.sidebar a.disabled { opacity:.4; cursor: not-allowed; }
.backdrop { position: fixed; inset: 0; background: rgba(6,40,40,.5); z-index: 50; display: none; backdrop-filter: blur(1px); }
.backdrop.show { display: block; }

.main { flex: 1; padding: 1.2rem; min-width: 0; }
@media (min-width: 900px) {
  .sidebar { transform: translateX(0); }
  .backdrop { display: none !important; }
  .main { margin-left: 244px; padding: 1.6rem 1.8rem; }
  .topbar .menu-btn { display: none; }
}

/* ---- Cards / layout ---- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.15rem 1.25rem; margin-bottom: 1.1rem; }
.page-head { display:flex; align-items:center; gap:.6rem; flex-wrap:wrap; margin-bottom:1rem; }
.page-head h1 { margin: 0; position:relative; padding-bottom:.35rem; }
.page-head h1::after { content:""; position:absolute; left:0; bottom:0; width:2.4rem; height:3px; border-radius:3px; background: var(--gold); }
.page-head .spacer { flex:1; }
.grid { display: grid; gap: 1rem; }
.grid.cols-2 { grid-template-columns: 1fr; }
.grid.cols-3 { grid-template-columns: 1fr; }
.grid.cols-4 { grid-template-columns: 1fr 1fr; }
.grid.cols-5 { grid-template-columns: 1fr 1fr; }
@media (min-width: 700px) { .grid.cols-2 { grid-template-columns: 1fr 1fr; } .grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; } .grid.cols-4 { grid-template-columns: repeat(4,1fr);} .grid.cols-5 { grid-template-columns: repeat(3,1fr); } }
@media (min-width: 1000px) { .grid.cols-5 { grid-template-columns: repeat(5,1fr); } }

.stat { background: var(--card); border:1px solid var(--line); border-radius: var(--radius); padding: 1.05rem 1.1rem; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s; }
.stat .n { font-size: 1.75rem; font-weight: 700; color: var(--teal); letter-spacing:-.02em; }
.stat .l { font-size: .8rem; color: var(--muted); margin-top:.15rem; }
.stat.accent { border-top: 3px solid var(--gold); }
.kpi-link { cursor:pointer; }
.kpi-link:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: #d7ddd2; }

/* ---- Buttons ---- */
.btn { background: var(--teal); color:#fff; border:0; border-radius: 10px; padding:.55rem 1rem; font-size:.9rem; cursor:pointer; font-weight:600; transition: background .15s, transform .1s, box-shadow .15s; box-shadow: 0 1px 2px rgba(10,50,50,.18); }
.btn:hover { background: var(--teal-dark); transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn:active { transform: translateY(0); }
.btn.ghost { background: #fff; color: var(--teal); border:1px solid #cdd8d6; box-shadow:none; }
.btn.ghost:hover { background: var(--teal-light); border-color: var(--teal); }
.btn.gold { background: linear-gradient(180deg, var(--gold), var(--gold-dark)); color:#3d2c00; }
.btn.gold:hover { background: var(--gold-dark); }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #9e3324; }
.btn.sm { padding:.32rem .6rem; font-size:.78rem; border-radius:8px; }
.btn:disabled { opacity:.5; cursor:not-allowed; transform:none; }
.icon-btn { background:transparent; border:0; font-size:1.4rem; line-height:1; cursor:pointer; color: var(--muted); border-radius:8px; padding:.1rem .3rem; }
.icon-btn:hover { background: var(--line-soft); color: var(--ink); }
.btn-row { display:flex; gap:.5rem; flex-wrap:wrap; }

/* ---- Tables ---- */
.table-wrap { overflow-x:auto; -webkit-overflow-scrolling: touch; border:1px solid var(--line); border-radius: var(--radius-sm); }
table.data { width:100%; border-collapse: collapse; font-size:.88rem; }
table.data th, table.data td { text-align:left; padding:.6rem .7rem; border-bottom:1px solid var(--line-soft); white-space: nowrap; }
table.data th { background: var(--teal-light); color: var(--teal-dark); font-weight:700; font-size:.78rem; text-transform:uppercase; letter-spacing:.03em; position: sticky; top: 0; }
table.data tbody tr:nth-child(even) td { background: #fbfcfb; }
table.data tbody tr:hover td { background: var(--teal-light); }
table.data td.actions { white-space: nowrap; }
/* Keep the last (actions) column reachable when a data table scrolls sideways —
   the Edit/Delete buttons stay pinned to the right instead of being cut off. */
.table-wrap table.data td:last-child,
.table-wrap table.data th:last-child { position: sticky; right: 0; }
.table-wrap table.data td:last-child { background:#fff; box-shadow:-8px 0 8px -8px rgba(0,0,0,.18); z-index:1; }
.table-wrap table.data tbody tr:nth-child(even) td:last-child { background:#fbfcfb; }
.table-wrap table.data tbody tr:hover td:last-child { background: var(--teal-light); }
.table-wrap table.data th:last-child { background: var(--teal-light); z-index:3; }
.tag { display:inline-block; font-size:.7rem; padding:.14rem .5rem; border-radius:999px; background: var(--teal-light); color: var(--teal-dark); font-weight:600; }
.tag.req { background: var(--gold-soft); color:#6f5300; }
.tag.muted { background:#ececea; color:#666; }

/* ---- Forms ---- */
.form .field { margin-bottom:.85rem; }
.form label { display:block; font-size:.78rem; color: var(--muted); margin-bottom:.3rem; font-weight:600; }
.form input, .form select, .form textarea,
.toolbar input[type=text], .toolbar input[type=date], .toolbar input[type=month], .toolbar select {
  width:100%; padding:.55rem .7rem; border:1px solid var(--line); border-radius:9px; font-size:.95rem; background:#fff; color: var(--ink); transition: border-color .15s, box-shadow .15s;
}
.form input:focus, .form select:focus, .form textarea:focus,
.toolbar input:focus, .toolbar select:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(15,94,94,.14); }
.form .check-label { display:flex; align-items:center; gap:.45rem; font-size:.9rem; color: var(--ink); font-weight:500; }
.form .check-label input, .check-label input { width:auto; }
.form .help, .help { font-size:.76rem; color: var(--muted); margin-top:.25rem; }
.form-grid { display:grid; gap:0 1.1rem; grid-template-columns:1fr; }
@media (min-width:600px){ .form-grid { grid-template-columns:1fr 1fr; } }

.toolbar { display:flex; gap:.5rem; flex-wrap:wrap; align-items:center; margin-bottom:.9rem; }
.toolbar input[type=text], .toolbar input[type=date], .toolbar input[type=month], .toolbar select { width:auto; }
.search { min-width: 200px; }

/* ---- Tabs ---- */
.tabs { display:flex; gap:.15rem; flex-wrap:wrap; border-bottom:1px solid var(--line); margin-bottom:1.1rem; overflow-x:auto; }
.tabs button { background:transparent; border:0; padding:.6rem .9rem; cursor:pointer; font-size:.9rem; color: var(--muted); border-bottom:2.5px solid transparent; margin-bottom:-1px; white-space:nowrap; font-weight:600; border-radius:8px 8px 0 0; transition: color .15s, background .15s; }
.tabs button:hover { color: var(--teal-dark); background: var(--line-soft); }
.tabs button.active { color: var(--teal-dark); border-bottom-color: var(--gold); }

/* ---- Modal ---- */
.modal-overlay { position:fixed; inset:0; background:rgba(6,40,40,.5); z-index:100; display:flex; align-items:flex-start; justify-content:center; padding:1rem; overflow-y:auto; backdrop-filter: blur(2px); }
.modal { background:#fff; border-radius:16px; width:100%; max-width:480px; margin-top:5vh; box-shadow: var(--shadow-lg); animation: pop .16s ease; overflow:hidden; }
.modal-wide { max-width: 780px; }
@keyframes pop { from { transform: translateY(10px) scale(.99); opacity:0; } to { transform:none; opacity:1; } }
.modal-head { display:flex; align-items:center; justify-content:space-between; padding:.9rem 1.2rem; border-bottom:1px solid var(--line-soft); background: var(--teal-light); }
.modal-head h3 { margin:0; }
.modal-body { padding:1.2rem; max-height:70vh; overflow-y:auto; }
.modal-foot { display:flex; justify-content:flex-end; gap:.5rem; padding:.85rem 1.2rem; border-top:1px solid var(--line-soft); background:#fbfcfb; }

/* ---- Toast ---- */
#toast-host { position: fixed; bottom: 1.2rem; left: 50%; transform: translateX(-50%); z-index:200; display:flex; flex-direction:column; gap:.5rem; align-items:center; }
.toast { background: var(--teal-dark); color:#fff; padding:.65rem 1.1rem; border-radius:10px; font-size:.88rem; box-shadow: var(--shadow-lg); opacity:0; transform: translateY(12px); transition: all .25s; max-width:90vw; font-weight:500; }
.toast.show { opacity:1; transform:none; }
.toast.err { background: var(--danger); }
.toast.warn { background: var(--warn); }

/* ---- Misc ---- */
.muted { color: var(--muted); }
.empty { text-align:center; padding:2.2rem 1rem; color: var(--muted); }
.placeholder-page { text-align:center; padding:3rem 1rem; color: var(--muted); }
.placeholder-page .big { font-size:2.4rem; }
.pill-soon { display:inline-block; background: var(--gold-soft); color:#6f5300; padding:.15rem .5rem; border-radius:6px; font-size:.75rem; }
.section-title { display:flex; align-items:center; gap:.5rem; margin:1.2rem 0 .6rem; }
.section-title h2 { margin:0; }
.note { background: linear-gradient(90deg, var(--teal-light), #fbfcfb); border-left:3px solid var(--teal); padding:.7rem .9rem; border-radius:8px; font-size:.86rem; margin-bottom:1rem; color:#254544; }
.badge-logo { width:44px; height:44px; border-radius:12px; background: linear-gradient(180deg, var(--gold), var(--gold-dark)); color: var(--teal-dark); display:flex; align-items:center; justify-content:center; font-weight:800; }
.right { text-align:right; } .center { text-align:center; }
.divider { height:1px; background: var(--line); margin:1rem 0; }
.flex { display:flex; gap:.5rem; align-items:center; }
.wrap-actions { display:flex; gap:.35rem; flex-wrap:wrap; }

/* ---- Login (hero) ---- */
.login-wrap {
  position:fixed; inset:0; margin:0; max-width:none; width:100%; min-height:100vh;
  display:flex; align-items:center; justify-content:center; padding:1.5rem; overflow-y:auto;
  background:
    radial-gradient(1100px 600px at 12% -10%, rgba(224,171,43,.20), transparent 60%),
    radial-gradient(900px 700px at 110% 120%, rgba(20,128,127,.55), transparent 55%),
    linear-gradient(150deg, var(--teal-deep), var(--teal-dark) 55%, var(--teal));
}
.login-wrap .card {
  max-width: 460px; width:100%; padding: 2rem 1.9rem 1.7rem; border:0; border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0,0,0,.32); position:relative; overflow:hidden;
}
.login-wrap .card::before { content:""; position:absolute; top:0; left:0; right:0; height:5px; background: linear-gradient(90deg, var(--gold), var(--sec2), var(--teal-mid)); }
.login-wrap .card h1 { font-size:1.55rem; margin-bottom:.15rem; }
.login-wrap .card > .muted { margin-bottom:1.2rem; font-size:.9rem; }
.login-badge { width:60px; height:60px; border-radius:16px; margin:0 auto 1rem; background: linear-gradient(180deg, var(--teal), var(--teal-dark)); color:#fff; display:flex; align-items:center; justify-content:center; font-size:1.8rem; box-shadow: 0 8px 18px rgba(10,50,50,.3); }
.role-grid { display:grid; grid-template-columns:1fr 1fr; gap:.65rem; margin-top:.4rem; }
.role-grid button {
  position:relative; text-align:left; padding:.85rem .9rem .85rem 1rem; border:1px solid var(--line); background:#fff;
  border-radius:13px; cursor:pointer; font-size:.9rem; font-weight:600; color:var(--ink);
  box-shadow: var(--shadow); transition: transform .16s, box-shadow .16s, border-color .16s, background .16s;
}
.role-grid button:hover { border-color: var(--teal); background: var(--teal-light); transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.role-grid button::after { content:"\203a"; position:absolute; right:.7rem; top:50%; transform:translateY(-50%); color: var(--gold-dark); font-size:1.3rem; font-weight:700; opacity:.7; }
.login-form .btn { width:100%; margin-top:.3rem; }
.login-error { background:#fde8e8; border:1px solid #f3b4b4; border-radius:8px; padding:.5rem .7rem; }

/* loader */
.loader { text-align:center; padding:2.4rem; color:var(--muted); }
#root > .loader { min-height:60vh; display:flex; align-items:center; justify-content:center; }