:root {
  --bg: #f7f8f9;
  --card: #ffffff;
  --ink: #1d2430;
  --muted: #6b7280;
  --primary: #0d5ab8;
  --primary-light: #e8f1fd;
  --danger: #b00020;
  --ok: #1b7a43;
  --border: #e2e6ee;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

header.site {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

header.site .brand { display: flex; align-items: center; text-decoration: none; }
header.site .logo-img { height: 50px; width: auto; object-fit: contain; }
header.site nav { display: flex; gap: 16px; }
header.site a { color: var(--primary); text-decoration: none; }

footer.site {
  background: #f0f2f5;
  color: var(--ink);
  padding: 20px;
  margin-top: 40px;
  text-align: center;
  font-size: 0.9em;
}

main { max-width: 1200px; margin: 32px auto; padding: 0 18px; }

h1 { margin-top: 0; font-size: 2em; }
h2 { margin-top: 1.2em; font-size: 1.4em; }
h3 { margin-top: 0.8em; font-size: 1.1em; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  margin: 20px 0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.card.center { text-align: center; }

.register-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .register-container { grid-template-columns: 1fr; }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 0;
  padding: 14px;
}

legend { font-weight: 600; padding: 0 6px; }

.input-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-row > span { font-weight: 500; }

.names-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

input[type=text], input[type=email], input[type=password], input[type=datetime-local], input[type=date], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1em;
}

input:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }

.checkbox-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 10px;
}

.checkbox-row input { margin-top: 4px; cursor: pointer; }

.hint { color: var(--muted); font-size: 0.95em; }

.calendar-controls-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  gap: 10px;
}

.week-label { font-weight: 600; color: var(--primary); text-align: center; }

.calendar-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  margin-bottom: 12px;
}

.calendar-table thead { border-bottom: 2px solid var(--border); }

.calendar-table th {
  padding: 12px 8px;
  text-align: center;
  font-weight: 600;
  border-right: 1px solid var(--border);
}

.calendar-table td {
  padding: 8px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
  height: 60px;
}

.calendar-table .time-cell { background: #f7f8f9; font-weight: 500; }

.calendar-table .slot-button {
  width: 100%;
  height: 100%;
  padding: 2px 4px;
  border: 2px solid var(--border);
  background: white;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75em;
  font-weight: 600;
  color: var(--muted);
  transition: all 0.2s;
}

.calendar-table .slot-button:hover { border-color: var(--primary); background: var(--primary-light); color: var(--primary); }
.calendar-table .slot-button.selected { background: var(--primary); color: white; border-color: var(--primary); }
.calendar-table .slot-button.has-partner { border-color: var(--ok); background: #f0f9f4; color: var(--ok); }
.calendar-table .slot-button.has-partner.selected { background: var(--ok); color: white; }
.calendar-table .slot-button.disabled { background: #f5f5f5; color: #999; cursor: not-allowed; border-color: #ccc; }

.consent-check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #fafbfc;
}

.consent-check input { margin-top: 4px; cursor: pointer; }

.btn-submit {
  background: var(--primary);
  color: white;
  padding: 12px 24px;
  font-size: 1.05em;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  width: 100%;
  transition: all 0.2s;
}

.btn-submit:hover { background: #005a9c; }

.info-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

button, .btn {
  cursor: pointer;
  font-size: 1em;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 10px 18px;
  font-weight: 500;
  transition: all 0.2s;
}

button.primary, .btn.primary {
  background: var(--primary);
  color: white;
}

button.primary:hover { background: #005a9c; }

.btn { display: inline-block; text-decoration: none; color: var(--primary); }
.btn.small { font-size: 0.82em; padding: 6px 10px; }
.btn.danger-btn { background: var(--danger); color: white; }

.alert { padding: 12px 16px; border-radius: 8px; margin: 14px 0; border: 1px solid var(--border); }
.alert.error { background: #fdecee; border-color: #f3c0c8; color: #7a0016; }
.alert.ok { background: #e7f6ec; border-color: #b6e2c6; color: var(--ok); }

.admin-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.stats { display: flex; gap: 14px; flex-wrap: wrap; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px 20px; text-align: center; flex: 1; min-width: 140px; }
.stat b { display: block; font-size: 1.8em; color: var(--primary); margin-bottom: 4px; }
.stat span { color: var(--muted); font-size: 0.85em; }

table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 0.95em; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid var(--border); }
th { background: #f7f8f9; font-weight: 600; }
tr:hover { background: #f9fafb; }

.badge { font-size: 0.78em; padding: 3px 8px; border-radius: 999px; background: #eef2f9; color: var(--primary); font-weight: 500; }
.badge.proposed { background: #fff3e0; color: #92520a; }
.badge.confirmed { background: #e7f6ec; color: var(--ok); }
.badge.cancelled { background: #fdecee; color: var(--danger); }
.badge.waiting { background: #e8f1fd; color: var(--primary); }
.badge.matched { background: #e8f1fd; color: var(--primary); }
.badge.done { background: #e0e0e0; color: #666; }
.badge.pending { background: #fff3e0; color: #92520a; }

.decline-option { margin: 15px 0; padding: 15px; border: 1px solid var(--border); border-radius: 6px; cursor: pointer; }
.decline-option:hover { background: var(--primary-light); border-color: var(--primary); }
.decline-option label { cursor: pointer; }

.participant-row[style*="display: none"] { display: none !important; }