/* TiadaKesan theme: ceria (khitanan, ulang tahun)
   DESIGN.md section 4, row "ceria". Two hues plus neutral, rounded system sans,
   three flat geometric shapes as the only ornament. Contract C3 hooks only. */

:root {
  --inv-bg: #FFFBF2;
  --inv-ink: #20262E;
  --inv-muted: #5A6472;
  --inv-accent: #1F6FB2;
  --inv-line: #E4DCCD;
  --inv-surface: #FFFFFF;
  --inv-font-display: ui-rounded, "SF Pro Rounded", "Segoe UI Variable Display",
    "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --inv-font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --inv-radius: 14px;

  /* theme-local, not part of C3 */
  --inv-warm: #E4762B;
  --inv-accent-strong: #1A5E97;
  --inv-warm-ink: #8F4A12;
  --inv-accent-soft: #E3EEF7;
  --inv-warm-soft: #FBE8D8;
}

.inv {
  background: var(--inv-bg);
  color: var(--inv-ink);
  font-family: var(--inv-font-body);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  margin: 0 auto;
  max-width: 720px;
  padding: 0 16px 48px;
}

.inv h1,
.inv h2,
.inv h3 {
  font-family: var(--inv-font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0;
}

.inv a { color: var(--inv-accent); }

.inv :focus-visible {
  outline: 3px solid var(--inv-accent);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Cover. The three flat shapes live here: two circles and one square. */
.inv-cover {
  position: relative;
  border-radius: var(--inv-radius);
  margin: 16px 0 32px;
  padding: 64px 24px 56px;
  text-align: center;
  background-color: var(--inv-surface);
  background-image:
    radial-gradient(circle closest-side, var(--inv-accent-soft) 100%, transparent 100%),
    radial-gradient(circle closest-side, var(--inv-warm-soft) 100%, transparent 100%),
    linear-gradient(var(--inv-warm-soft) 0 100%);
  background-size: 220px 220px, 160px 160px, 48px 48px;
  background-position: left -80px top -72px, right -52px bottom -48px, right 24px top 36px;
  background-repeat: no-repeat;
  border: 1px solid var(--inv-line);
}

/* A tinted pill badge here was the one "AI-made" tell DESIGN.md names outright. The kicker
   is a small caps label over a hairline rule instead, which still reads as playful next to
   the cover's flat shapes. */
.inv-cover-kicker {
  display: inline-block;
  margin: 0 0 20px;
  padding: 0 0 8px;
  border-bottom: 2px solid var(--inv-warm);
  color: var(--inv-warm-ink);
  font-family: var(--inv-font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.inv-names {
  font-family: var(--inv-font-display);
  font-size: 34px;
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 12px;
}

.inv-date {
  color: var(--inv-muted);
  font-size: 17px;
  margin: 0 0 28px;
}

.inv-to {
  color: var(--inv-muted);
  font-size: 15px;
  margin: 0;
}

.inv-to-name {
  display: block;
  color: var(--inv-ink);
  font-family: var(--inv-font-display);
  font-size: 20px;
  font-weight: 700;
  margin-top: 4px;
  overflow-wrap: anywhere;
}

/* Sections */
.inv-section {
  background: var(--inv-surface);
  border: 1px solid var(--inv-line);
  border-radius: var(--inv-radius);
  margin: 0 0 16px;
  padding: 24px 20px;
}

.inv-section-title {
  font-size: 21px;
  margin: 0 0 16px;
}

/* Countdown */
.inv-countdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.inv-cd-unit {
  background: var(--inv-accent-soft);
  border-radius: 10px;
  padding: 12px 4px;
  text-align: center;
}

.inv-cd-num {
  display: block;
  font-family: var(--inv-font-display);
  font-size: 26px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.inv-cd-label {
  display: block;
  color: var(--inv-muted);
  font-size: 13px;
}

/* People */
.inv-people {
  display: grid;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.inv-person {
  border-top: 1px solid var(--inv-line);
  padding-top: 16px;
  text-align: center;
}

.inv-person:first-child { border-top: 0; padding-top: 0; }

.inv-person-name {
  font-family: var(--inv-font-display);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
}

.inv-person-parents {
  color: var(--inv-muted);
  font-size: 15px;
  margin-top: 6px;
}

/* Events */
.inv-events {
  display: grid;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.inv-event {
  background: var(--inv-bg);
  border: 1px solid var(--inv-line);
  border-radius: 10px;
  padding: 16px;
}

.inv-event-name {
  font-family: var(--inv-font-display);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.inv-event-time { font-size: 16px; }

.inv-event-venue {
  color: var(--inv-muted);
  font-size: 15px;
  margin-top: 4px;
}

.inv-event-map { margin-top: 12px; }

/* Gallery */
.inv-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.inv-gallery-item {
  border-radius: 10px;
  overflow: hidden;
}

.inv-gallery-item img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* RSVP form */
.inv-rsvp { display: grid; gap: 16px; }

/* .inv-field wraps a label and its control (contract C3); style the control. */
.inv-field { display: block; }

.inv-field input,
.inv-field select,
.inv-field textarea {
  display: block;
  width: 100%;
  min-height: 48px;
  box-sizing: border-box;
  background: var(--inv-surface);
  border: 1px solid var(--inv-line);
  border-radius: 10px;
  color: var(--inv-ink);
  font-family: inherit;
  font-size: 16px;
  padding: 10px 12px;
}

.inv-rsvp label {
  color: var(--inv-muted);
  display: block;
  font-size: 14px;
  margin-bottom: 6px;
}

.inv-field input::placeholder,
.inv-field textarea::placeholder { color: var(--inv-muted); }

/* Buttons */
.inv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  min-width: 44px;
  box-sizing: border-box;
  background: var(--inv-accent);
  border: 1px solid var(--inv-accent);
  border-radius: 999px;
  color: var(--inv-surface);
  cursor: pointer;
  font-family: var(--inv-font-display);
  font-size: 16px;
  font-weight: 600;
  padding: 10px 22px;
  text-align: center;
  text-decoration: none;
  transition: background-color 120ms ease;
}

.inv-btn:hover {
  background: var(--inv-accent-strong);
  border-color: var(--inv-accent-strong);
}

.inv-event-map.inv-btn,
.inv-share .inv-btn {
  background: var(--inv-surface);
  color: var(--inv-accent);
  border-color: var(--inv-accent);
}

.inv-event-map.inv-btn:hover,
.inv-share .inv-btn:hover { background: var(--inv-accent-soft); }

/* Gift block */
.inv-gift { display: grid; gap: 12px; }

.inv-gift-warning {
  background: var(--inv-warm-soft);
  border: 1px solid var(--inv-warm);
  border-radius: 10px;
  color: var(--inv-ink);
  font-size: 15px;
  padding: 12px 14px;
}

/* Share */
.inv-share { text-align: center; }

/* Watermark and footer */
.inv-wm,
.inv-footer {
  color: var(--inv-muted);
  font-size: 16px;
  text-align: center;
}

.inv-wm { margin-top: 24px; }

.inv-wm a { font-weight: 600; }

.inv-footer {
  border-top: 1px solid var(--inv-line);
  margin-top: 24px;
  padding-top: 16px;
}

@media (min-width: 640px) {
  .inv { padding: 0 24px 64px; }
  .inv-cover { padding: 88px 32px 72px; }
  .inv-names { font-size: 42px; }
  .inv-section { padding: 32px; }
  .inv-people { grid-template-columns: repeat(2, 1fr); }
  .inv-person { border-top: 0; padding-top: 0; }
  .inv-gallery { grid-template-columns: repeat(3, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .inv,
  .inv *,
  .inv *::before,
  .inv *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}