/* ============================================================
   СЕКЦИИ — обложка, выбор стороны, дресс-код, место, футер
   и десктоп-раскладка
   ============================================================ */

/* --- Навигация (десктоп) --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-4) var(--pad-screen);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
}
.nav-brand { font-family: var(--font-display); font-weight: 800; font-size: 18px; }
.nav-links { display: flex; gap: var(--s-6); }
.nav-links a {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--ink-secondary);
  transition: color 160ms ease;
}
.nav-links a:hover { color: var(--c-deep); }

@media (min-width: 768px) {
  .nav { display: flex; }
}

/* --- Обложка --- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(48px, 12vw, 96px) var(--pad-screen);
  background:
    radial-gradient(120% 80% at 50% 0%, var(--c-tint) 0%, var(--surface) 60%);
  overflow: hidden;
  transition: background var(--transition-side);
}
.hero-decor {
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: min(680px, 130%);
  opacity: 0.5;
  pointer-events: none;
  color: var(--c-accent);
  transition: color var(--transition-side);
}
.hero-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: var(--s-6); }
.hero-date {
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  font-weight: 700;
  color: var(--c-deep);
  transition: color var(--transition-side);
}
.hero-names {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h1);
  line-height: 1.02;
  color: var(--ink);
}
.hero-names .amp { font-style: italic; font-weight: 700; color: var(--c-primary); transition: color var(--transition-side); display: block; font-size: 0.62em; margin: 0.08em 0; }
.hero-tagline { font-size: var(--fs-lead); color: var(--ink-secondary); }

@media (min-width: 768px) {
  .hero .countdown { max-width: 560px; }
}

/* --- Выбор стороны --- */
.side-picker .container-narrow { display: flex; flex-direction: column; gap: var(--s-6); align-items: center; text-align: center; }
.side-buttons {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
  width: 100%;
}
@media (min-width: 480px) {
  .side-buttons { grid-template-columns: 1fr 1fr; }
}
.side-btn {
  padding: 18px 20px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: var(--fs-lead);
  color: #fff;
  transition: transform 120ms ease, box-shadow 200ms ease, filter 160ms ease;
  box-shadow: var(--shadow-soft);
}
.side-btn:hover { filter: brightness(1.04); transform: translateY(-2px); }
.side-btn:active { transform: translateY(0); }
.side-btn--ivan { background: #8A6CB0; color: #fff; }
.side-btn--kristina { background: #E6B93F; color: #443A18; }

/* Подсветка выбранной стороны: галочка + кольцо, остальная — приглушена */
.side-btn.is-selected {
  box-shadow: 0 0 0 3px var(--surface), 0 0 0 5px currentColor, var(--shadow-soft);
  transform: translateY(-2px);
}
.side-btn.is-selected::after {
  content: '✓';
  margin-left: var(--s-2);
  font-weight: 800;
}
.has-side .side-btn:not(.is-selected) { opacity: 0.45; }
.has-side .side-btn:not(.is-selected):hover { opacity: 0.75; }

/* --- История: декоративное фото-полотно --- */
.story-figure {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--c-tint);
  box-shadow: var(--shadow-card);
}
.story-figure svg { width: 100%; height: 100%; }

/* --- Место: карта --- */
.map-frame {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--c-tint);
  box-shadow: var(--shadow-card);
}
.map-frame iframe { width: 100%; height: 100%; border: 0; }
.venue-note {
  padding: var(--s-4);
  border-radius: var(--radius);
  background: var(--c-tint);
  color: var(--c-tint-ink);
  font-size: var(--fs-small);
  transition: background-color var(--transition-side), color var(--transition-side);
}

/* --- Десктоп: две колонки для Программа / Место --- */
.two-col { display: grid; grid-template-columns: 1fr; gap: var(--s-8); }
@media (min-width: 768px) {
  .two-col { grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
  .two-col--reverse > :first-child { order: 2; }
}

/* --- Футер --- */
.footer {
  background: var(--ink);
  color: #fff;
  padding: clamp(56px, 12vw, 88px) var(--pad-screen);
}
.footer h2 { color: #fff; }
.footer .eyebrow { color: var(--c-accent); }
.footer-names { font-family: var(--font-display); font-weight: 800; font-size: var(--fs-h2); margin-bottom: var(--s-2); }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-4);
  margin: var(--s-8) 0;
}
@media (min-width: 600px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer .contact-card {
  background: rgba(255,255,255,0.06);
  color: #fff;
}
.footer .contact-role { color: rgba(255,255,255,0.5); }
.footer .contact-phone { color: var(--c-accent); }

/* --- RSVP --- */
.rsvp-form { display: flex; flex-direction: column; gap: var(--s-6); }
.rsvp-thanks {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  align-items: center;
  padding: var(--s-8) 0;
}
.rsvp-status { font-size: var(--fs-small); min-height: 1.2em; }
.rsvp-status--error { color: #D8574F; }
.rsvp-status--loading { color: var(--ink-secondary); }

/* Спиннер загрузки */
.spinner {
  width: 16px; height: 16px;
  border: 2px solid color-mix(in srgb, var(--c-on-primary) 40%, transparent);
  border-top-color: var(--c-on-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Переключатель версий (v2) --- */
.version-switch {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: var(--c-primary);
  color: var(--c-on-primary);
  font-size: var(--fs-small);
  font-weight: 700;
  box-shadow: var(--shadow-card);
  transition: transform 200ms ease, background-color var(--transition-side), color var(--transition-side);
}
.version-switch::before { content: '←'; font-weight: 800; }
.version-switch:hover { transform: translateY(-2px); }