/* ===== Base ===== */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --danger: #dc2626;
  --success: #16a34a;
  --star: #f59e0b;
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Layout ===== */
.header {
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  text-align: center;
  padding: 28px 16px;
}
.header h1 { font-size: 1.6rem; }
.header p { opacity: .9; margin-top: 6px; font-size: .95rem; }

.container {
  width: 100%;
  max-width: 760px;
  margin: -24px auto 32px;
  padding: 0 14px;
  flex: 1;
}
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 6px 24px rgba(15, 23, 42, .08);
  padding: 26px;
  margin-bottom: 18px;
}
.card h2 { font-size: 1.25rem; margin-bottom: 4px; }
.card .sub { color: var(--muted); font-size: .92rem; margin-bottom: 18px; }

/* ===== Form ===== */
.form-group { margin-bottom: 18px; }
label.lbl, .lbl { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }
.req { color: var(--danger); }
input[type=text], input[type=email], input[type=tel], input[type=password], textarea, select {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, .15);
}
.field-error { color: var(--danger); font-size: .85rem; margin-top: 4px; display: none; }
.has-error input, .has-error textarea { border-color: var(--danger); }
.has-error .field-error { display: block; }
.counter { text-align: right; font-size: .78rem; color: var(--muted); }

/* Star rating (pure CSS, reversed DOM order) */
.stars { display: inline-flex; flex-direction: row-reverse; gap: 4px; }
.stars input { position: absolute; opacity: 0; pointer-events: none; }
.stars label { font-size: 2.1rem; color: #cbd5e1; cursor: pointer; line-height: 1; transition: color .12s; }
.stars label:hover, .stars label:hover ~ label,
.stars input:checked ~ label { color: var(--star); }
.stars input:focus-visible + label { outline: 2px solid var(--primary); border-radius: 4px; }

/* Confidence option pills */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pills input { position: absolute; opacity: 0; pointer-events: none; }
.pills label {
  padding: 9px 14px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  font-size: .92rem;
  background: #fff;
  transition: all .15s;
}
.pills input:checked + label { background: var(--primary); border-color: var(--primary); color: #fff; }
.pills input:focus-visible + label { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 13px 22px;
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: background .15s, transform .05s;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn:active { transform: scale(.98); }
.btn-block { display: block; width: 100%; }
.btn-light { background: #e2e8f0; color: var(--text); }
.btn-light:hover { background: #cbd5e1; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 7px 12px; font-size: .85rem; }
.btn[disabled], .btn.disabled { background: #cbd5e1; color: #64748b; cursor: not-allowed; pointer-events: none; }

/* ===== Alerts ===== */
.alert { padding: 12px 14px; border-radius: 10px; margin-bottom: 16px; font-size: .94rem; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert ul { margin-left: 18px; }

/* ===== Download list ===== */
.unit-list { display: grid; gap: 12px; }
.unit {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px; border: 1.5px solid var(--border); border-radius: 12px;
}
.unit .name { font-weight: 600; }
.unit .file { color: var(--muted); font-size: .82rem; word-break: break-all; }
.again-box { text-align: center; color: var(--muted); font-size: .92rem; }

/* ===== Footer ===== */
.footer { text-align: center; padding: 18px 12px 26px; color: var(--muted); font-size: .85rem; }
.footer a { color: var(--muted); font-weight: 600; }

/* ===== Admin ===== */
.admin-wrap { max-width: 1250px; margin: 0 auto; padding: 18px 14px 40px; width: 100%; flex: 1; }
.topbar {
  background: #0f172a; color: #fff; padding: 14px 18px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
}
.topbar h1 { font-size: 1.15rem; }
.topbar a { color: #fff; margin-left: 14px; font-size: .92rem; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 18px; }
.stat { background: #fff; border-radius: 12px; padding: 16px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.stat .num { font-size: 1.7rem; font-weight: 700; color: var(--primary); }
.stat .lab { color: var(--muted); font-size: .82rem; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar input[type=text] { flex: 1; min-width: 180px; }
.table-wrap { overflow-x: auto; background: #fff; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
table { width: 100%; border-collapse: collapse; min-width: 900px; font-size: .9rem; }
th, td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: #f8fafc; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); white-space: nowrap; }
tr:hover td { background: #fafbff; }
details summary { cursor: pointer; color: var(--primary); font-weight: 600; }
details p { margin-top: 6px; white-space: pre-wrap; max-width: 320px; }
.pager { display: flex; gap: 6px; justify-content: center; margin-top: 16px; flex-wrap: wrap; }
.pager a, .pager span { padding: 7px 12px; border-radius: 8px; background: #fff; border: 1px solid var(--border); font-size: .9rem; }
.pager span.cur { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 720px) {
  .header h1 { font-size: 1.3rem; }
  .card { padding: 18px 16px; }
  .stars label { font-size: 2.4rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .unit { flex-direction: column; align-items: stretch; text-align: left; }
  .unit .btn { width: 100%; }
  .btn-row-mobile .btn { width: 100%; margin-bottom: 8px; }
}
@media (min-width: 721px) {
  .container { margin-top: -30px; }
  .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
}