/* ── Simple RSVP with Countdown — letterpress invitation ────────────
   Warm ivory cotton paper, fine double-rule frame, engraved charcoal
   serif type with letterspaced small caps, bottle-green accent,
   hairline-ruled countdown numerals. */

:root {
  --paper: #f7f3ea;
  --paper-deep: #efe9db;
  --ink: #2e2c28;
  --ink-soft: #6f6a60;
  --rule: #b9b2a2;
  --green: #1e4d3b;
  --green-deep: #143529;
  --err: #a33c2e;
  --serif: 'Cormorant Garamond', serif;
  --sans: 'Jost', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

.hidden { display: none !important; }

body {
  font-family: var(--serif);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 255, 255, 0.65), transparent 55%),
    repeating-linear-gradient(2deg, transparent 0 3px, rgba(46, 44, 40, 0.012) 3px 4px),
    linear-gradient(180deg, var(--paper), var(--paper-deep));
  min-height: 100vh;
  padding: 34px 18px;
}

.invite { max-width: 620px; margin: 0 auto; }

/* double-rule letterpress frame */
.frame {
  border: 1px solid var(--rule);
  outline: 1px solid var(--rule);
  outline-offset: 5px;
  padding: 60px 44px 40px;
  background: transparent;
}

/* ── Invitation head ──────────────────────────────────────────────── */
.head { text-align: center; }

.host-line {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-soft);
  max-width: 420px;
  margin: 0 auto;
  line-height: 2;
}

.flourish {
  color: var(--green);
  font-size: 1.5rem;
  margin: 22px 0 18px;
  line-height: 1;
}

h1 {
  font-weight: 600;
  font-style: italic;
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.date-line {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-top: 26px;
  color: var(--ink);
}

.venue-line {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--ink-soft);
  margin-top: 10px;
}

.dress-line {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 18px;
}

/* ── Countdown ────────────────────────────────────────────────────── */
.countdown-section {
  margin-top: 48px;
  padding-top: 34px;
  border-top: 1px solid var(--rule);
  text-align: center;
}

.count-label {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.count-unit { display: flex; flex-direction: column; align-items: center; min-width: 58px; }

.count-num {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.count-word {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 8px;
}

.count-rule { width: 1px; height: 44px; background: var(--rule); }

.count-expired {
  font-style: italic;
  font-size: 1.4rem;
  color: var(--green);
}

/* ── RSVP ─────────────────────────────────────────────────────────── */
.rsvp {
  margin-top: 48px;
  padding-top: 34px;
  border-top: 1px solid var(--rule);
}

.rsvp-title {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  text-align: center;
  color: var(--ink);
  margin-bottom: 28px;
}

.field { margin-bottom: 20px; }

label, legend {
  display: block;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.66rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

input[type="text"],
input[type="email"] {
  width: 100%;
  padding: 12px 2px;
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
  transition: border-color 0.2s ease;
}

input:focus { outline: none; border-bottom-color: var(--green); }
input.error { border-bottom-color: var(--err); }
input::placeholder { color: #b0a996; font-style: italic; }

.attending { border: none; margin: 26px 0; }

.attend-row { display: flex; gap: 14px; }

.attend-opt {
  flex: 1;
  position: relative;
  display: block;
  text-align: center;
  cursor: pointer;
  margin: 0;
}

.attend-opt input { position: absolute; opacity: 0; }

.attend-opt span {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--ink-soft);
  padding: 13px 10px;
  border: 1px solid var(--rule);
  transition: all 0.18s ease;
}

.attend-opt input:checked + span {
  color: var(--paper);
  background: var(--green);
  border-color: var(--green);
}

.attend-opt input:focus-visible + span { outline: 2px solid var(--green); outline-offset: 3px; }

.btn {
  display: block;
  width: 100%;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--green);
  border: none;
  padding: 17px 20px;
  cursor: pointer;
  transition: background 0.18s ease;
}

.btn:hover:not(:disabled) { background: var(--green-deep); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }

.form-error {
  font-family: var(--sans);
  color: var(--err);
  font-size: 0.85rem;
  text-align: center;
  margin-top: 14px;
}

.spinner {
  display: inline-block;
  width: 13px;
  height: 13px;
  border: 2px solid rgba(247, 243, 234, 0.4);
  border-top-color: var(--paper);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -2px;
  margin-right: 10px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Confirmation ─────────────────────────────────────────────────── */
.confirmed { text-align: center; padding: 10px 0 4px; }

.confirmed h3 {
  font-weight: 600;
  font-style: italic;
  font-size: 1.9rem;
  color: var(--ink);
}

.confirmed p {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-top: 10px;
  letter-spacing: 0.04em;
}

/* ── Footer ───────────────────────────────────────────────────────── */
.foot { text-align: center; margin-top: 44px; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 540px) {
  .frame { padding: 44px 24px 32px; }
  .countdown { gap: 10px; }
  .count-unit { min-width: 48px; }
  .count-num { font-size: 2rem; }
  .count-rule { height: 34px; }
  .attend-row { flex-direction: column; }
}