/* UltraStom brand palette (см. брендбук, стр. 3-4)
   Основные:    бирюза → средний синий → тёмный
   Сигнальные:  малиновый, мятный, оранжевый
*/
:root {
  --brand-cyan:  #00B4D8;
  --brand-mid:   #176B87;
  --brand-dark:  #0E3A5C;
  --brand-ink:   #0F2D44;

  --neutral-soft: #EAF2F6;
  --neutral-mid:  #A4B7BE;
  --neutral-warm: #EFE0D5;

  --signal-error:  #C72252;
  --signal-ok:     #5BC9A8;
  --signal-warn:   #D77B3D;

  --bg: #F4F7F9;
  --card: #FFFFFF;
  --text: #0F2D44;
  --muted: #6c7a85;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Manrope", "Tahoma", "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
  display: flex; flex-direction: column; min-height: 100vh;
}
main { flex: 1; }
a { color: var(--brand-mid); }
a:hover { color: var(--brand-cyan); }

h1, h2, h3, h4, h5 { font-weight: 600; color: var(--brand-ink); letter-spacing: -.01em; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.25rem; margin-bottom: 1rem; }

/* ----- header / footer ----- */
.site-header {
  background: var(--brand-ink);
  color: #fff;
  padding: 14px 0;
  border-bottom: 3px solid var(--brand-cyan);
}
.site-header .header-row { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; }
.brand img { height: 32px; }
.brand-text { font-weight: 600; font-size: 1.05rem; }
.brand-text small { display: block; font-weight: 400; color: var(--brand-cyan); font-size: .75rem; letter-spacing: .04em; text-transform: uppercase; }
.site-header nav a { color: #fff; margin-left: 22px; text-decoration: none; font-weight: 500; }
.site-header nav a:hover { color: var(--brand-cyan); }

.site-footer {
  background: var(--card);
  border-top: 1px solid #e3ecf1;
  padding: 18px 0;
  color: var(--muted);
  font-size: .9rem;
}

/* ----- hero ----- */
.hero {
  padding: 28px 0 8px;
}
.hero h1 {
  background: linear-gradient(90deg, var(--brand-ink), var(--brand-mid) 60%, var(--brand-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 2rem;
  margin-bottom: 8px;
}
.hero .lead { color: var(--muted); max-width: 760px; }

/* ----- cards ----- */
.card-block {
  background: var(--card);
  padding: 24px 26px;
  border-radius: 14px;
  box-shadow: 0 6px 24px rgba(15,45,68,.06);
  margin-bottom: 22px;
  border-top: 3px solid var(--brand-cyan);
}

.guidelines {
  background: var(--neutral-soft);
  border-left: 4px solid var(--brand-cyan);
  padding: 14px 18px;
  border-radius: 8px;
  color: var(--brand-ink);
}
.guidelines h5 { color: var(--brand-ink); margin: 0 0 8px; font-size: 1rem; }
.guidelines ul { margin: 0; padding-left: 18px; }

/* ----- buttons ----- */
.btn { font-weight: 500; border-radius: 8px; padding: 8px 18px; }
.btn-primary {
  background: var(--brand-mid);
  border-color: var(--brand-mid);
}
.btn-primary:hover {
  background: var(--brand-cyan);
  border-color: var(--brand-cyan);
}
.btn-outline-secondary {
  border-color: var(--neutral-mid);
  color: var(--brand-ink);
}
.btn-outline-secondary:hover {
  background: var(--neutral-soft);
  border-color: var(--brand-mid);
  color: var(--brand-mid);
}

/* ----- forms ----- */
.form-control, .form-select {
  border: 1.5px solid #d6e0e6;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 15px;
}
.form-control:focus, .form-select:focus {
  border-color: var(--brand-cyan);
  box-shadow: 0 0 0 3px rgba(0,180,216,.15);
}
.form-label { font-weight: 500; color: var(--brand-ink); margin-bottom: 4px; }

.alert-danger {
  background: #fff0f4;
  color: var(--signal-error);
  border-color: rgba(199,34,82,.25);
}
.alert-success {
  background: #ecfaf4;
  color: #1e7355;
  border-color: rgba(91,201,168,.4);
}

/* ----- result ----- */
.result-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 28px; }
@media (max-width: 900px) { .result-grid { grid-template-columns: 1fr; } }

.image-wrap { position: relative; display: inline-block; max-width: 100%; }
.image-wrap img { max-width: 100%; max-height: 480px; border-radius: 10px; border: 1px solid #d6e0e6; }
.bbox {
  position: absolute;
  border: 2px solid var(--brand-cyan);
  background: rgba(0,180,216,.12);
  border-radius: 6px;
  pointer-events: auto;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s;
}
.bbox.active {
  border-color: var(--signal-error);
  background: rgba(199,34,82,.12);
  box-shadow: 0 0 0 3px rgba(199,34,82,.18);
}

.implant-list { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.implant-item {
  padding: 10px 12px;
  border: 1.5px solid #d6e0e6;
  border-radius: 8px;
  cursor: pointer;
  transition: all .15s;
  background: #fff;
}
.implant-item:hover { border-color: var(--brand-cyan); }
.implant-item.active { border-color: var(--brand-cyan); background: var(--neutral-soft); }

.candidates { display: flex; flex-direction: column; gap: 10px; }
.candidate {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  border: 1.5px solid #d6e0e6;
  border-radius: 10px;
  cursor: pointer;
  background: #fff;
  transition: all .15s;
}
.candidate:hover { border-color: var(--brand-cyan); }
.candidate.selected {
  border-color: var(--brand-mid);
  background: var(--neutral-soft);
  box-shadow: 0 0 0 3px rgba(23,107,135,.12);
}
.candidate .name { flex: 1; }
.candidate .name b { color: var(--brand-ink); }
.candidate .name small { color: var(--muted); }
.candidate .prob {
  font-weight: 700;
  color: var(--brand-mid);
  font-variant-numeric: tabular-nums;
  min-width: 52px;
  text-align: right;
}

.progress {
  height: 6px;
  border-radius: 4px;
  background: var(--neutral-soft);
}
.progress-bar { background: var(--brand-cyan); }

/* ----- admin tweaks ----- */
.badge { background: var(--brand-mid); }
.table thead th { color: var(--brand-ink); border-bottom: 2px solid var(--brand-cyan); font-weight: 600; }