*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: #ffffff;
  color: #1a2433;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
ul, ol, dl { list-style: none; }

:root {
  --bg: #ffffff;
  --bg-alt: #f4f6f9;
  --border: #dfe3e9;
  --border-strong: #c3ccd6;
  --text: #1a2433;
  --text-dim: #52606e;
  --text-mute: #8894a3;
  --primary: #0b3d91;
  --primary-dark: #072a66;
  --primary-light: #e8eef8;
  --accent: #c8102e;
  --serif: 'PT Serif', Georgia, serif;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }

.container { width: 100%; max-width: 1100px; margin-inline: auto; padding-inline: clamp(16px, 3vw, 32px); }
.container.narrow { max-width: 540px; }

.utility-bar {
  background: var(--primary-dark);
  color: #c9d4ea;
  font-size: 12px;
}
.utility-inner { display: flex; height: 34px; align-items: center; gap: 12px; }
.utility-bar .spacer { flex: 1; }

.site-header { background: #fff; border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 16px; color: var(--primary); }
.emblem { width: 50px; height: 56px; flex-shrink: 0; }
.emblem svg { width: 100%; height: 100%; }
.brand-title { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--text); }
.brand-sub { font-size: 12px; color: var(--text-mute); margin-top: 2px; }
.back-link { font-size: 13px; color: var(--text-dim); padding: 8px 14px; border: 1px solid var(--border); transition: all .15s; }
.back-link:hover { border-color: var(--primary); color: var(--primary); }

main { flex: 1; padding: 48px 0; }
.view { display: block; }
.view[hidden] { display: none; }

.card-eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 10px;
}

.login-card {
  background: #fff;
  border: 1px solid var(--border);
  border-top: 3px solid var(--primary);
  padding: 40px 36px;
}
.login-card.closed { border-top-color: var(--accent); }
.login-card h1 { font-size: 28px; margin-bottom: 14px; }
.card-eyebrow.accent { color: var(--accent); }

.closed-block {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px 24px;
  background: #fdecee;
  border: 1px solid #f0c4bd;
  border-left: 3px solid var(--accent);
  margin-bottom: 28px;
}
.closed-icon {
  width: 56px; height: 56px;
  background: #fff;
  border: 1px solid #f0c4bd;
  display: grid; place-items: center;
  color: var(--accent);
}
.closed-icon svg { width: 28px; height: 28px; }
.closed-title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: #6e2a23;
  margin-bottom: 6px;
}
.closed-text {
  font-size: 13px;
  color: #6e2a23;
  line-height: 1.65;
}
.lead { color: var(--text-dim); font-size: 14px; line-height: 1.7; margin-bottom: 24px; }

.form { display: flex; flex-direction: column; gap: 16px; }
.form label { display: flex; flex-direction: column; gap: 6px; }
.form label > span { font-size: 12px; font-weight: 600; color: var(--text-dim); }
.form input, .form select, .form textarea {
  border: 1px solid var(--border-strong);
  background: #fff;
  padding: 12px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.form input:focus { border-color: var(--primary); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: #1054b8; }
.btn-primary:disabled { opacity: 0.6; cursor: wait; }
.btn-ghost { color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.form-msg {
  padding: 12px 14px;
  font-size: 13px;
  border-left: 3px solid var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
}
.form-msg.error { border-left-color: var(--accent); background: #fdecee; color: #6e2a23; }
.form-msg.success { border-left-color: #2c7a4f; background: #e8f5ed; color: #1a4d32; }

.form-link {
  margin-top: 8px;
  padding: 12px 14px;
  background: #fff8e6;
  border: 1px dashed #d4a017;
  font-size: 12px;
  color: #6b4f0f;
  word-break: break-all;
}
.form-link b { display: block; margin-bottom: 6px; font-weight: 700; color: #1a2433; }
.form-link a { color: var(--primary); text-decoration: underline; word-break: break-all; }

.login-note {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-mute);
  line-height: 1.6;
}

.profile-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  padding-bottom: 28px;
  border-bottom: 2px solid var(--primary);
  margin-bottom: 36px;
}
.profile-avatar {
  width: 72px; height: 72px;
  background: var(--primary-light);
  border: 1px solid var(--border-strong);
  display: grid; place-items: center;
  font-family: var(--serif);
  font-size: 24px; font-weight: 700;
  color: var(--primary);
}
.profile-eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--primary); font-weight: 600; margin-bottom: 6px; }
.profile-info h1 { font-size: 26px; margin-bottom: 8px; }
.profile-meta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--text-dim); }
.rank-badge {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: #fff; background: var(--primary);
  padding: 4px 10px;
}

.profile-actions { margin-bottom: 40px; }
.action-card {
  width: 100%;
  display: flex; align-items: center; gap: 20px;
  padding: 24px 28px;
  background: #fff;
  border: 1px solid var(--border);
  text-align: left;
  cursor: pointer;
  transition: all .2s;
}
.action-card:hover { border-color: var(--primary); transform: translateY(-1px); }
.action-icon {
  width: 52px; height: 52px;
  background: var(--primary-light);
  border: 1px solid var(--border);
  color: var(--primary);
  display: grid; place-items: center;
  flex-shrink: 0;
}
.action-icon svg { width: 24px; height: 24px; }
.action-text { flex: 1; }
.action-title { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.action-desc { font-size: 13px; color: var(--text-dim); }
.action-arrow { color: var(--primary); font-size: 22px; font-weight: 600; }

.profile-block { background: #fff; border: 1px solid var(--border); padding: 28px 32px; }
.block-title { font-family: var(--serif); font-size: 16px; font-weight: 700; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.info-grid { display: grid; grid-template-columns: 200px 1fr; gap: 12px 24px; font-size: 13px; }
.info-grid dt { color: var(--text-mute); }
.info-grid dd { color: var(--text); font-weight: 500; }

.db-head { margin-bottom: 28px; }
.db-head h1 { font-size: 28px; margin-bottom: 12px; }
.back-btn { font-size: 12px; color: var(--text-dim); padding: 8px 0; margin-bottom: 14px; }
.back-btn:hover { color: var(--primary); }

.search-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  background: #fff;
  border: 2px solid var(--border-strong);
  margin-bottom: 24px;
  transition: border-color .15s;
}
.search-bar:focus-within { border-color: var(--primary); }
.search-bar svg { color: var(--text-mute); flex-shrink: 0; }
.search-bar input { flex: 1; border: 0; outline: none; font-size: 15px; background: transparent; }
.search-count { font-size: 12px; color: var(--text-mute); white-space: nowrap; }

.db-results { display: grid; gap: 8px; }
.empty-state, .loading {
  padding: 40px 24px;
  text-align: center;
  color: var(--text-mute);
  font-size: 14px;
  background: var(--bg-alt);
  border: 1px dashed var(--border-strong);
}
.student-row {
  display: grid;
  grid-template-columns: 1fr 100px 140px 32px;
  gap: 20px;
  align-items: center;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all .15s;
}
.student-row:hover { border-color: var(--primary); background: var(--primary-light); }
.student-name { font-family: var(--serif); font-size: 16px; font-weight: 700; }
.student-sub { font-size: 12px; color: var(--text-mute); margin-top: 2px; }
.student-class {
  font-size: 13px; font-weight: 600; color: var(--primary);
  padding: 4px 8px; border: 1px solid var(--primary); display: inline-block;
}
.student-dob { font-size: 13px; color: var(--text-dim); }
.student-arrow { color: var(--primary); font-size: 18px; }

.modal {
  position: fixed; inset: 0; z-index: 100;
  display: none; align-items: flex-start; justify-content: center;
  padding: clamp(20px, 5vh, 60px) 20px;
  overflow-y: auto;
}
.modal.open { display: flex; }
.modal-backdrop { position: fixed; inset: 0; background: rgba(10, 18, 32, 0.7); }
.modal-dialog {
  position: relative; background: #fff; border-top: 4px solid var(--primary);
  max-width: 640px; width: 100%; margin: auto 0;
  box-shadow: 0 20px 60px rgba(7, 42, 102, 0.3);
}
.modal-header {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 20px;
  padding: 24px 28px; border-bottom: 1px solid var(--border); background: var(--bg-alt);
}
.modal-eyebrow { font-size: 11px; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }
.modal-header h2 { font-size: 22px; }
.modal-close {
  width: 36px; height: 36px;
  border: 1px solid var(--border-strong); background: #fff;
  display: grid; place-items: center;
  color: var(--text-dim);
}
.modal-close:hover { border-color: var(--accent); color: var(--accent); }
.modal-body { padding: 28px; font-size: 14px; color: var(--text-dim); line-height: 1.65; }
.student-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
}
.student-photo {
  aspect-ratio: 1/1.2;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: grid; place-items: center;
  font-size: 11px; color: var(--text-mute);
  text-align: center;
}
.student-photo img { width: 100%; height: 100%; object-fit: cover; }
.student-details dl { display: grid; grid-template-columns: 1fr; gap: 14px; }
.student-details .pair { display: flex; flex-direction: column; gap: 4px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.student-details .pair:last-child { border-bottom: 0; padding-bottom: 0; }
.student-details dt { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-mute); font-weight: 600; }
.student-details dd { font-size: 14px; color: var(--text); font-weight: 500; }

.schedule-block { margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--border); }
.block-subtitle { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--primary); font-weight: 700; margin-bottom: 14px; }

.schedule-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
}
.schedule-day {
  background: #fff;
  border: 1px solid var(--border);
  border-top: 2px solid var(--primary);
}
.schedule-day-head {
  padding: 10px 14px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.schedule-lessons { padding: 4px 0; }
.schedule-lessons li {
  display: grid;
  grid-template-columns: 22px 70px 1fr auto;
  gap: 8px;
  align-items: baseline;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.schedule-lessons li:last-child { border-bottom: 0; }
.schedule-lessons li:hover { background: var(--bg-alt); }
.lesson-num { color: var(--text-mute); font-weight: 600; font-size: 11px; }
.lesson-time { color: var(--text-dim); font-variant-numeric: tabular-nums; font-size: 11px; }
.lesson-subject { color: var(--text); font-weight: 500; line-height: 1.4; }
.lesson-room {
  color: var(--text-mute);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.schedule-empty {
  padding: 16px 14px;
  text-align: center;
  font-size: 12px;
  color: var(--text-mute);
  font-style: italic;
}

.site-footer {
  background: var(--primary-dark);
  color: #8f9fbd;
  padding: 24px 0;
  font-size: 12px;
  margin-top: auto;
}
.footer-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

@media (max-width: 720px) {
  .profile-head { grid-template-columns: 1fr; gap: 14px; }
  .profile-avatar { justify-self: start; }
  .info-grid { grid-template-columns: 1fr; gap: 4px; padding-bottom: 4px; }
  .info-grid dt { color: var(--text-mute); margin-top: 8px; }
  .student-row { grid-template-columns: 1fr 80px; }
  .student-row .student-dob { display: none; }
  .student-card { grid-template-columns: 1fr; }
  .student-photo { max-width: 200px; margin: 0 auto; }
}