:root {
  --bg: #ffffff;
  --text: #0b0b0b;
  --muted: #6b6f76;
  --line: #e6e8eb;
  --green: #18a558;
  --green-ink: #0f7a3f;
  --aqua: #25c2a0;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  margin: 0; color: var(--text); background: var(--bg);
}

a { color: var(--green-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header, .site-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--line);
}
.site-footer { border-top: 1px solid var(--line); border-bottom: none; gap: 16px; flex-wrap: wrap; }

.banner { border-bottom: 1px solid var(--line); background: #fff; }
.banner-inner { max-width: 1200px; margin: 0 auto; padding: 10px 24px; display: flex; gap: 8px; align-items: center; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); }
.brand-mark { width: 36px; height: 36px; }
.nav { display: flex; gap: 16px; align-items: center; }
.nav a { padding: 8px 10px; border-radius: 8px; }
.btn { border: 1px solid var(--line); padding: 10px 14px; border-radius: 10px; display: inline-flex; gap: 8px; align-items: center; transition: transform .15s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn.primary { background: var(--green); color: #fff; border-color: var(--green); }
.btn.primary:hover { background: var(--green-ink); border-color: var(--green-ink); }
.btn.ghost { background: transparent; }
.btn.tiny { padding: 8px 10px; font-size: 14px; }

.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; padding: 48px 24px; align-items: center; }
.hero-media { position: relative; border-radius: 16px; overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; display: block; filter: saturate(1.05) contrast(1.02); }
.ripples { position: absolute; inset: 0; background: radial-gradient(1200px 1200px at var(--x,50%) var(--y,50%), rgba(37,194,160,0.25), transparent 45%); pointer-events: none; transition: opacity .3s; opacity: .5; }

.hero-copy h1 { font-size: clamp(32px, 4vw, 54px); line-height: 1.05; margin: 0 0 12px; letter-spacing: -0.02em; }
.hero-copy .accent { color: var(--green); }
.hero-copy p { color: var(--muted); margin: 0 0 18px; max-width: 48ch; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.section-header { text-align: center; padding: 32px 24px 8px; }
.section-header h2 { margin: 0 0 6px; font-size: clamp(24px, 3vw, 36px); }
.section-header p { margin: 0; color: var(--muted); }

.activities { padding-bottom: 32px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding: 0 24px 24px; }
.card {
  border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: grid; gap: 10px;
  background: #fff; transition: box-shadow .2s ease, transform .2s ease; will-change: transform;
}
.card:hover { box-shadow: 0 10px 30px rgba(0,0,0,0.08); transform: translateY(-2px); }
.card img { width: 64px; height: 64px; }
.card h3 { margin: 4px 0; }
.card p { margin: 0; color: var(--muted); }
.card .meta { display: flex; gap: 12px; color: var(--green-ink); font-size: 14px; }

.about { padding: 24px; }
.about-content { border: 1px solid var(--line); border-radius: 16px; padding: 24px; background: linear-gradient(0deg, rgba(24,165,88,0.06), rgba(24,165,88,0.06)), #fff; }
.features { margin: 12px 0 0; padding-left: 18px; }
.features li { margin: 8px 0; }

.booking { padding: 16px 24px 48px; }
.book-form {
  margin: 0 auto; max-width: 720px; display: grid; gap: 14px; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line); padding: 16px; border-radius: 16px; background: #fff;
}
.book-form label { display: grid; gap: 8px; font-weight: 600; }
.book-form input, .book-form select {
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font: inherit; background: #fff;
}
.book-form button { grid-column: span 2; }
.form-note { grid-column: span 2; color: var(--muted); margin: 0; }
.link { text-decoration: underline; }

.foot-nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }

/* ── Calendar ───────────────────────────────────────────────────────────── */
.kalender { padding: 16px 24px 48px; }

.cal-nav {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; margin: 16px 0 24px;
}
.cal-month-label { font-size: 20px; font-weight: 800; min-width: 200px; text-align: center; }

.cal-grid-wrap { max-width: 700px; margin: 0 auto; }

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-day-header {
  text-align: center; font-size: 12px; font-weight: 600;
  color: var(--muted); padding: 6px 0; text-transform: uppercase; letter-spacing: .04em;
}

.cal-day {
  position: relative;
  aspect-ratio: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  border-radius: 10px; cursor: pointer; font-size: 14px; font-weight: 600;
  border: 1px solid transparent;
  transition: background .15s ease, border-color .15s ease;
  user-select: none;
}
.cal-day:hover { background: rgba(24,165,88,0.08); border-color: var(--green); }
.cal-day.today { background: rgba(24,165,88,0.12); border-color: var(--green); color: var(--green-ink); }
.cal-day.selected { background: var(--green); color: #fff; border-color: var(--green); }
.cal-day.selected:hover { background: var(--green-ink); }
.cal-day.other-month { color: var(--muted); opacity: .45; }
.cal-day.has-event::after {
  content: '';
  position: absolute; bottom: 5px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--green);
}
.cal-day.selected.has-event::after { background: #fff; }

.cal-events {
  max-width: 700px; margin: 24px auto 0;
  display: grid; gap: 12px;
}
.cal-empty { color: var(--muted); text-align: center; margin: 0; }
.cal-upcoming-label { font-weight: 600; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .04em; margin: 0 0 4px; }

.cal-event-card {
  border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px;
  background: #fff; display: grid; gap: 6px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.cal-event-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.07); transform: translateY(-1px); }
.cal-event-card h3 { margin: 0; font-size: 16px; }
.cal-event-time { font-size: 13px; font-weight: 600; color: var(--green-ink); }
.cal-event-location { font-size: 13px; color: var(--muted); }
.cal-event-desc { font-size: 14px; color: var(--muted); margin: 4px 0 0; }
.cal-event-category {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase; background: rgba(24,165,88,0.1); color: var(--green-ink);
  border-radius: 6px; padding: 2px 8px; width: fit-content;
}
.cal-event-ics {
  font-size: 13px; margin-top: 4px;
}
.cal-event-ics a { color: var(--green-ink); text-decoration: underline; }

.cal-legend {
  max-width: 700px; margin: 16px auto 0;
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--muted);
}
.cal-legend-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--green); display: inline-block;
}

@media (max-width: 640px) {
  .cal-day { font-size: 12px; border-radius: 7px; }
  .cal-month-label { font-size: 16px; min-width: 160px; }
}

/* ── Auth pages ─────────────────────────────────────────────────────────── */
.auth-section {
  display: flex; justify-content: center; align-items: center;
  min-height: calc(100vh - 130px); padding: 32px 24px;
}
.auth-box {
  width: 100%; max-width: 400px;
  border: 1px solid var(--line); border-radius: 16px;
  padding: 32px; background: #fff;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.auth-box h1 { margin: 0 0 6px; font-size: 24px; }
.auth-subtitle { margin: 0 0 24px; color: var(--muted); }

.auth-form { display: grid; gap: 14px; }
.auth-form label { display: grid; gap: 8px; font-weight: 600; }
.auth-form input {
  border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; font: inherit; background: #fff;
  width: 100%;
}
.auth-form input:focus { outline: 2px solid var(--green); outline-offset: 1px; }
.auth-form .btn { width: 100%; justify-content: center; }
.auth-error { color: #c0392b; margin: 0; min-height: 1.2em; font-size: 14px; }
.auth-hint  { margin: 0; font-size: 14px; text-align: center; color: var(--muted); }
.auth-success { color: var(--green-ink); margin: 0; font-size: 14px; }

/* Members page */
.members-section { padding: 32px 24px 48px; max-width: 900px; margin: 0 auto; }
.members-content { margin-top: 24px; }
.auth-user { font-weight: 600; color: var(--green-ink); padding: 8px 4px; }

.members-table {
  width: 100%; border-collapse: collapse; margin-top: 16px;
}
.members-table th, .members-table td {
  text-align: left; padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
.members-table th { font-weight: 600; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
.members-table tr:last-child td { border-bottom: none; }

@media (max-width: 1040px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .hero { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .book-form { grid-template-columns: 1fr; }
  .book-form button, .form-note { grid-column: span 1; }
  .site-header, .site-footer { padding: 12px 16px; }
}