:root {
  --accent: #2a5d8f;
  --accent-dark: #1d4266;
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #62717f;
  --border: #dfe4ea;
  --success: #1f7a45;
  --error: #b3261e;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

header.site {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

header.site a { color: var(--accent-dark); text-decoration: none; font-weight: 600; }
header.site nav a { margin-left: 16px; font-weight: 400; color: var(--muted); }

h1 { font-size: 1.6rem; margin-bottom: 0.25em; }
h2 { font-size: 1.2rem; margin-top: 2em; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.flash {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.flash.success { background: #e5f5ec; color: var(--success); }
.flash.error { background: #fbeae9; color: var(--error); }

.day-group { margin-bottom: 28px; }
.day-title { font-weight: 600; margin-bottom: 8px; color: var(--accent-dark); }

.slot-list { display: flex; flex-wrap: wrap; gap: 10px; }
.slot-btn {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent-dark);
  text-decoration: none;
  background: #eef4fa;
  font-weight: 500;
}
.slot-btn:hover { background: var(--accent); color: #fff; }

form .field { margin-bottom: 14px; }
label { display: block; font-weight: 500; margin-bottom: 4px; font-size: 0.92rem; }
input[type=text], input[type=email], input[type=date], input[type=time], input[type=number], input[type=password], textarea, select {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
}
textarea { min-height: 80px; }

.checkbox-row { display: flex; flex-wrap: wrap; gap: 12px; }
.checkbox-row label { display: flex; align-items: center; gap: 6px; font-weight: 400; }
.checkbox-row input { width: auto; }

button, .btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
}
button:hover, .btn:hover { background: var(--accent-dark); }
.btn.secondary { background: transparent; color: var(--accent-dark); border: 1px solid var(--accent); }
.btn.danger { background: var(--error); }
.btn.small { padding: 5px 10px; font-size: 0.85rem; }

table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 0.92rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.tag.free { background: #e5f5ec; color: var(--success); }
.tag.booked { background: #fdeeea; color: #a1481a; }

.link-box {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  background: #eef4fa; border: 1px dashed var(--accent); border-radius: 8px; padding: 10px 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.85rem; word-break: break-all;
}

.muted { color: var(--muted); font-size: 0.9rem; }
hr.sep { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 560px) { .grid-2 { grid-template-columns: 1fr; } }