/* ==========================================================
   Rohtak Public School — Student Management System
   Design tokens
   ========================================================== */
:root {
  --navy: #16324F;
  --navy-light: #1E4470;
  --navy-lighter: #2A5A8F;
  --marigold: #F2A93B;
  --marigold-dark: #D98F1F;
  --paper: #F7F4EE;
  --card: #FFFFFF;
  --ink: #1A1A2E;
  --ink-soft: #5B5F73;
  --border: #E3DFD3;
  --success: #3F8F5F;
  --success-bg: #E9F5EE;
  --danger: #C4483E;
  --danger-bg: #FBEAE8;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(22,50,79,0.06), 0 4px 16px rgba(22,50,79,0.06);
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  color: var(--navy);
}

.mono { font-family: var(--font-mono); letter-spacing: 0.02em; }

/* ---------- Login page ---------- */
.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  background: var(--navy);
}
.login-side {
  color: #F3EFE3;
  padding: 64px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 15%, rgba(242,169,59,0.18), transparent 45%),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
}
.login-side .brand-mark {
  width: 52px; height: 52px;
  border: 2px solid var(--marigold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--marigold);
}
.login-side h1 {
  color: #FBF8F0;
  font-size: 42px;
  line-height: 1.15;
  margin-top: 32px;
  max-width: 420px;
}
.login-side .tagline {
  color: #C7CEDB;
  font-size: 15px;
  margin-top: 14px;
  max-width: 380px;
  line-height: 1.6;
}
.id-card {
  margin-top: 48px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(242,169,59,0.35);
  border-radius: var(--radius);
  padding: 20px 22px;
  max-width: 320px;
  backdrop-filter: blur(2px);
}
.id-card .row { display: flex; justify-content: space-between; font-size: 12px; color: #C7CEDB; padding: 5px 0; border-bottom: 1px dashed rgba(255,255,255,0.12); }
.id-card .row:last-child { border-bottom: none; }
.id-card .row b { color: #FBF8F0; font-family: var(--font-mono); font-weight: 500; }
.login-side .footnote { color: #8C93A8; font-size: 12px; }

.login-main {
  display: flex; align-items: center; justify-content: center;
  padding: 48px;
  background: var(--paper);
}
.login-box { width: 100%; max-width: 380px; }
.login-box h2 { font-size: 26px; }
.login-box .sub { color: var(--ink-soft); font-size: 14px; margin: 8px 0 32px; }

.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--navy); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  background: var(--card);
  color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--navy-lighter);
  box-shadow: 0 0 0 3px rgba(30,68,112,0.12);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px;
  border-radius: 8px;
  border: none;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--navy); color: #FBF8F0; width: 100%; }
.btn-primary:hover { background: var(--navy-light); }
.btn-accent { background: var(--marigold); color: var(--navy); }
.btn-accent:hover { background: var(--marigold-dark); color: #fff; }
.btn-ghost { background: transparent; color: var(--navy); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--navy-lighter); }
.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-sm { padding: 7px 12px; font-size: 13px; }

.error-msg {
  background: var(--danger-bg); color: var(--danger);
  padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 16px;
  display: none;
}
.hint { font-size: 12px; color: var(--ink-soft); margin-top: 24px; line-height: 1.6; }
.hint code { background: #EFEBDD; padding: 1px 5px; border-radius: 4px; font-family: var(--font-mono); }

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

.sidebar {
  background: var(--navy);
  color: #E7E9F0;
  padding: 26px 18px;
  display: flex; flex-direction: column;
}
.sidebar .brand { display: flex; align-items: center; gap: 10px; padding: 0 8px 26px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 18px; }
.sidebar .brand .mark { width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--marigold); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); color: var(--marigold); font-size: 15px; }
.sidebar .brand b { font-family: var(--font-display); font-size: 16px; color: #FBF8F0; }
.sidebar .brand span { display: block; font-size: 10px; color: #97A0B5; letter-spacing: 0.06em; text-transform: uppercase; }

.nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: #C7CEDB;
  text-decoration: none; margin-bottom: 4px;
}
.nav-link .dot { width: 6px; height: 6px; border-radius: 50%; background: transparent; }
.nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-link.active { background: rgba(242,169,59,0.14); color: #FBF8F0; }
.nav-link.active .dot { background: var(--marigold); }

.sidebar .spacer { flex: 1; }
.sidebar .signout { color: #97A0B5; font-size: 13px; }

.main {
  padding: 32px 40px;
  max-width: 1180px;
}
.page-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 26px; flex-wrap: wrap; gap: 14px; }
.page-head h2 { font-size: 26px; }
.page-head .eyebrow { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--marigold-dark); font-weight: 700; margin-bottom: 4px; }
.page-head p { color: var(--ink-soft); font-size: 14px; margin-top: 4px; }

/* ---------- Stat cards ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 30px; }
.stat-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--marigold);
}
.stat-card .label { font-size: 12px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-card .value { font-family: var(--font-display); font-size: 32px; color: var(--navy); margin-top: 6px; }

/* ---------- Cards / tables ---------- */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--border); flex-wrap: wrap; gap: 10px; }
.card-head h3 { font-size: 16px; }
.card-body { padding: 20px 22px; }

.toolbar { display: flex; gap: 10px; align-items: center; }
.toolbar input, .toolbar select { padding: 9px 12px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px; font-family: var(--font-body); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--ink-soft); font-weight: 700; padding: 10px 22px; border-bottom: 1px solid var(--border);
  background: #FBFAF6;
}
tbody td { padding: 13px 22px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #FCFBF7; }
.roll { font-family: var(--font-mono); color: var(--navy); font-weight: 600; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-neutral { background: #EFEBDD; color: var(--ink-soft); }

.row-actions { display: flex; gap: 8px; }
.icon-btn {
  border: 1px solid var(--border); background: var(--card); border-radius: 6px;
  padding: 5px 9px; font-size: 12px; cursor: pointer; color: var(--navy-light);
}
.icon-btn:hover { border-color: var(--navy-lighter); }

.empty-state { text-align: center; padding: 48px 20px; color: var(--ink-soft); }
.empty-state .glyph { font-family: var(--font-display); font-size: 36px; color: var(--border); margin-bottom: 10px; }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(22,50,79,0.5);
  display: none; align-items: center; justify-content: center; padding: 20px; z-index: 50;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--card); border-radius: 14px; width: 100%; max-width: 480px;
  padding: 26px 26px 22px; box-shadow: 0 20px 60px rgba(22,50,79,0.3);
  max-height: 90vh; overflow-y: auto;
}
.modal h3 { font-size: 19px; margin-bottom: 4px; }
.modal .sub { color: var(--ink-soft); font-size: 13px; margin-bottom: 20px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }

.attendance-grid { display: flex; flex-direction: column; gap: 6px; }
.attendance-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; }
.attendance-row .who { display: flex; align-items: center; gap: 10px; }
.attendance-row .roll { font-size: 12px; }
.toggle-group { display: flex; gap: 6px; }
.toggle-btn {
  border: 1px solid var(--border); background: var(--card); padding: 6px 12px; border-radius: 6px;
  font-size: 12px; font-weight: 600; cursor: pointer; color: var(--ink-soft);
}
.toggle-btn.present.active { background: var(--success-bg); color: var(--success); border-color: var(--success); }
.toggle-btn.absent.active { background: var(--danger-bg); color: var(--danger); border-color: var(--danger); }

.loader { color: var(--ink-soft); font-size: 13px; padding: 20px 22px; }

@media (max-width: 900px) {
  .login-shell { grid-template-columns: 1fr; }
  .login-side { display: none; }
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .main { padding: 20px; }
}