:root {
  --green: #2f7a4f;
  --green-dark: #235c3b;
  --amber: #c47f17;
  --red: #b3412c;
  --bg: #f7f6f2;
  --card: #ffffff;
  --text: #2b2b28;
  --muted: #6b6b64;
  --border: #e4e2da;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

header.site {
  background: var(--green);
  color: #fff;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

header.site a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.15rem;
}

nav.site-nav {
  display: flex;
  gap: 18px;
}
nav.site-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.9;
}
nav.site-nav a:hover { opacity: 1; text-decoration: underline; }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

h1 { font-size: 1.6rem; margin-bottom: 4px; }
h2 { font-size: 1.25rem; }
p.lead { color: var(--muted); margin-top: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 16px;
}

.session-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.session-card .info h3 { margin: 0 0 4px; }
.session-card .info .when { color: var(--muted); font-size: 0.95rem; }

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}
.badge.open { background: #e5f3ea; color: var(--green-dark); }
.badge.full { background: #fbeae6; color: var(--red); }

.btn {
  display: inline-block;
  background: var(--green);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--green-dark); }
.btn.secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--red); }
.btn.danger:hover { background: #8f3221; }

form .field { margin-bottom: 16px; }
label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.92rem; }
input[type=text], input[type=email], input[type=datetime-local], input[type=number], textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
}
textarea { resize: vertical; min-height: 70px; }

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.alert.error { background: #fbeae6; color: var(--red); }
.alert.success { background: #e5f3ea; color: var(--green-dark); }
.alert.warning { background: #fdf1de; color: var(--amber); }

table { width: 100%; border-collapse: collapse; margin-top: 8px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { color: var(--muted); font-weight: 600; }

.muted { color: var(--muted); font-size: 0.88rem; }
.actions-row { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.empty { color: var(--muted); padding: 24px 0; text-align: center; }

nav.admin-nav { margin-bottom: 24px; }
nav.admin-nav a { color: var(--green-dark); text-decoration: none; font-weight: 600; margin-right: 16px; }

/* Naptar nezet */
.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
.calendar-header h1 { margin: 0; }
.calendar-nav { display: flex; gap: 10px; }
.calendar-nav .btn { padding: 8px 14px; font-size: 0.88rem; }

table.calendar {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
table.calendar th {
  background: #f0efe9;
  padding: 8px 4px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
table.calendar td {
  vertical-align: top;
  border: 1px solid var(--border);
  padding: 6px;
  height: 96px;
  width: 14.28%;
  font-size: 0.8rem;
}
table.calendar td.empty-cell { background: #fafaf7; }
table.calendar td.today { background: #f2f8f4; }
.day-number { font-weight: 600; margin-bottom: 4px; color: var(--muted); font-size: 0.82rem; }

.cal-event {
  display: block;
  background: #e5f3ea;
  color: var(--green-dark);
  border-radius: 6px;
  padding: 2px 5px;
  margin-bottom: 3px;
  font-size: 0.74rem;
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.cal-event:hover { background: #d5ebdd; }
.cal-event.full { background: #fbeae6; color: var(--red); }

@media (max-width: 640px) {
  table.calendar td { height: 70px; font-size: 0.7rem; padding: 3px; }
  .cal-event { font-size: 0.65rem; }
}