:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --ink: #14171f;
  --muted: #667085;
  --line: #e4e7ec;
  --brand: #3b5bdb;
  --brand-ink: #ffffff;
  --ok: #12805c;
  --ok-bg: #e7f6ef;
  --no: #b42318;
  --no-bg: #fdecea;
  --wait: #8a6100;
  --wait-bg: #fff6db;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; margin: 0 0 .25rem; letter-spacing: -.01em; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

.container { max-width: 880px; margin: 0 auto; padding: 24px 16px 64px; }
.narrow { max-width: 420px; margin: 6vh auto 0; }

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--surface); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5;
}
.topbar[hidden] { display: none; }
.brand { font-weight: 700; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.brand:hover { text-decoration: none; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--brand); display: inline-block; }
.topbar nav { display: flex; gap: 18px; align-items: center; font-size: .95rem; }
.topbar nav a { color: var(--muted); }
.topbar nav a.active { color: var(--ink); font-weight: 600; }

/* Cards and lists */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px;
}
.list { display: grid; gap: 12px; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.meta { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: .9rem; margin-top: 4px; }
.empty { text-align: center; padding: 40px 20px; color: var(--muted); }

/* Forms */
label { display: block; font-weight: 500; font-size: .9rem; margin: 12px 0 6px; }
input, textarea, select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: #fff; color: var(--ink);
}
input:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--brand) 35%, transparent); border-color: var(--brand); }
textarea { min-height: 90px; resize: vertical; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 600px) { .grid-2 { grid-template-columns: 1fr; } }
.check { display: flex; align-items: center; gap: 8px; font-weight: 400; margin: 6px 0; }
.check input { width: auto; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 16px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); font: inherit; font-weight: 600; cursor: pointer;
}
.btn:hover { background: #f2f4f7; text-decoration: none; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn.danger { color: var(--no); }
.btn.block { width: 100%; margin-top: 16px; }
.btn.sm { padding: 6px 10px; font-size: .85rem; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }
button.link { background: none; border: 0; color: var(--muted); font: inherit; cursor: pointer; padding: 0; }
button.link:hover { color: var(--ink); }

/* Tabs on the login card */
.tabs { display: flex; gap: 4px; background: #eef0f4; padding: 4px; border-radius: 10px; margin-bottom: 8px; }
.tabs button { flex: 1; border: 0; background: none; padding: 8px; border-radius: 8px; font: inherit; font-weight: 500; color: var(--muted); cursor: pointer; }
.tabs button.active { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: .85rem; margin: 20px 0 4px; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* Status pills */
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 600; text-transform: capitalize; }
.pill.accepted { background: var(--ok-bg); color: var(--ok); }
.pill.declined { background: var(--no-bg); color: var(--no); }
.pill.pending { background: var(--wait-bg); color: var(--wait); }
.pill.cancelled { background: #f2f4f7; color: var(--muted); }

/* RSVP summary */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
@media (max-width: 600px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.stat b { display: block; font-size: 1.5rem; }
.stat span { color: var(--muted); font-size: .85rem; }

/* Guest table */
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.table-wrap { overflow-x: auto; }

.people { max-height: 240px; overflow-y: auto; border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; }

.banner { padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; font-size: .92rem; }
.banner.warn { background: var(--wait-bg); color: var(--wait); }
.banner.err { background: var(--no-bg); color: var(--no); }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; font-size: .92rem;
  opacity: 0; pointer-events: none; transition: all .2s ease; max-width: calc(100% - 32px);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--no); }