:root {
  --bg-1: #fff0f6;
  --bg-2: #ffe0f0;
  --bg-3: #ffe8bf;
  --bg-4: #d8f7ff;
  --ink: #6f3558;
  --ink-soft: rgba(111, 53, 88, 0.72);
  --white: rgba(255, 255, 255, 0.72);
  --white-strong: rgba(255, 255, 255, 0.92);
  --line: rgba(255, 255, 255, 0.55);
  --pink: #ff6fa8;
  --rose: #ff8cbc;
  --peach: #ffb66e;
  --sky: #7fd8ff;
  --mint: #83e6d1;
  --shadow: rgba(198, 102, 146, 0.22);
  --radius: 28px;
  --radius-sm: 18px;
  --font-sans: "Nunito", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --font-display: "Ma Shan Zheng", "Noto Serif SC", serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.viewer-open { overflow: hidden; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,.8), transparent 32%),
    radial-gradient(circle at 85% 15%, rgba(127,216,255,.45), transparent 22%),
    radial-gradient(circle at 20% 80%, rgba(255,182,110,.35), transparent 25%),
    linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 28%, var(--bg-3) 56%, var(--bg-4) 100%);
}
::selection { background: rgba(255,111,168,.22); }

.bg-noise, .bg-bloom, .bg-stars {
  position: fixed; inset: 0; pointer-events: none;
}
.bg-noise {
  opacity: .08; z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.28'/%3E%3C/svg%3E");
}
.bg-bloom {
  z-index: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(255,255,255,.8), transparent 30%),
    radial-gradient(circle at 12% 22%, rgba(255,111,168,.22), transparent 22%),
    radial-gradient(circle at 86% 24%, rgba(131,230,209,.25), transparent 24%),
    radial-gradient(circle at 52% 76%, rgba(255,182,110,.26), transparent 28%);
}
.bg-stars {
  z-index: 0;
  background-image:
    radial-gradient(2px 2px at 12% 20%, rgba(255,255,255,.8), transparent),
    radial-gradient(2px 2px at 76% 14%, rgba(255,255,255,.75), transparent),
    radial-gradient(1px 1px at 64% 70%, rgba(255,255,255,.8), transparent),
    radial-gradient(2px 2px at 28% 84%, rgba(255,255,255,.72), transparent);
}

.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 16px; top: 16px; z-index: 99; padding: 8px 12px; background: #fff; border-radius: 12px; }

.top-nav, .main, .hero-inner, .mode-banner { position: relative; z-index: 1; }
.top-nav {
  max-width: 980px; margin: 0 auto; padding: 20px 22px 0;
  display: flex; align-items: center; justify-content: space-between;
}
.top-nav-brand {
  font-family: var(--font-display); font-size: 1.7rem; color: var(--pink); text-shadow: 0 8px 25px rgba(255,111,168,.22);
}
.top-nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.top-nav-links a {
  text-decoration: none; color: var(--ink); font-weight: 700; padding: 10px 14px;
  border-radius: 999px; background: rgba(255,255,255,.45); backdrop-filter: blur(10px);
}

.hero { padding: 22px 22px 42px; }
.hero-inner { max-width: 980px; margin: 0 auto; text-align: center; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 12px; margin: 0 0 18px;
  color: var(--ink-soft); letter-spacing: .18em; font-size: .88rem;
}
.hero-kicker-line {
  width: 56px; height: 2px; border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(255,111,168,.6), transparent);
}
.couple-showcase {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 22px; align-items: center;
  margin: 10px auto 18px;
}
.person-card {
  display: flex; align-items: center; gap: 16px; padding: 18px;
  background: linear-gradient(135deg, rgba(255,255,255,.8), rgba(255,255,255,.52));
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 18px 40px var(--shadow); backdrop-filter: blur(14px);
}
.avatar-ring {
  width: 92px; height: 92px; padding: 4px; border-radius: 50%;
  background: linear-gradient(135deg, var(--pink), var(--peach), var(--sky));
  box-shadow: 0 10px 25px rgba(255,111,168,.28);
}
.person-avatar { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; display: block; border: 3px solid rgba(255,255,255,.95); }
.person-meta { text-align: left; }
.person-label {
  display: inline-block; margin-bottom: 8px; padding: 5px 10px; border-radius: 999px;
  background: rgba(255,111,168,.12); color: var(--pink); font-size: .8rem; font-weight: 700;
}
.person-name { display: block; font-size: 1.45rem; font-family: var(--font-serif); }
.hero-centerpiece { display: grid; justify-items: center; gap: 10px; }
.hero-center-line { width: 2px; height: 52px; background: linear-gradient(180deg, transparent, rgba(255,111,168,.5), transparent); }
.heart, .hero-title-join {
  color: var(--pink); text-shadow: 0 10px 25px rgba(255,111,168,.35);
}
.heart { font-size: 2rem; animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.12)} }
.hero-title {
  margin: 0; display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap;
  font-family: var(--font-display); font-size: clamp(2.6rem, 7vw, 4.5rem); line-height: 1.1;
}
.name-me, .name-partner {
  background: linear-gradient(135deg, #ff579f, #ff9a7d 50%, #6ecbff); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin: 12px 0 24px; color: var(--ink-soft); letter-spacing: .12em; }

.timer-card, .panel, .mode-banner, .bd-card {
  background: linear-gradient(145deg, rgba(255,255,255,.78), rgba(255,255,255,.45));
  border: 1px solid var(--line); box-shadow: 0 18px 40px var(--shadow); backdrop-filter: blur(16px);
}
.timer-card { max-width: 760px; margin: 0 auto 22px; padding: 24px; border-radius: var(--radius); }
.timer-heading { margin: 0 0 14px; font-family: var(--font-serif); color: var(--pink); letter-spacing: .15em; }
.timer-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.timer-unit { padding: 16px 10px; border-radius: 20px; background: rgba(255,255,255,.55); }
.timer-num { display: block; font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 800; color: var(--pink); }
.timer-label, .timer-total { color: var(--ink-soft); }
.timer-sep { display: none; }
.timer-total { margin: 14px 0 0; }
.birthdays { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; max-width: 760px; margin: 0 auto; }
.bd-card { position: relative; border-radius: 22px; padding: 18px; text-align: left; }
.bd-icon { position: absolute; right: 16px; top: 14px; color: var(--pink); }
.bd-name { display: block; font-family: var(--font-serif); font-size: 1.12rem; }
.bd-date, .bd-countdown { color: var(--ink-soft); }
.scroll-cue { display: inline-flex; margin-top: 24px; text-decoration: none; }
.scroll-cue-line { width: 2px; height: 48px; border-radius: 999px; background: linear-gradient(180deg, rgba(255,111,168,.85), transparent); }

.mode-banner { max-width: 980px; margin: 0 auto 18px; padding: 14px 18px; border-radius: 20px; color: var(--ink); }
.mode-banner.local { background: rgba(255,243,208,.8); }
.mode-banner.cloud { background: rgba(236,255,248,.8); }

.main { max-width: 980px; margin: 0 auto; padding: 0 22px 48px; display: grid; gap: 18px; }
.panel { padding: 24px; border-radius: var(--radius); }
.panel-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.panel-tag {
  padding: 6px 12px; border-radius: 999px; font-size: .78rem; font-weight: 800; letter-spacing: .12em;
  color: #fff; background: linear-gradient(135deg, var(--pink), var(--peach));
}
.panel-title { margin: 0; font-size: 1.6rem; font-family: var(--font-serif); }
.panel-hint { margin: 0 0 18px; color: var(--ink-soft); }
.upload-row { margin-bottom: 18px; }
.btn-upload, .btn-primary {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 18px; border: 0; cursor: pointer;
  border-radius: 16px; font: inherit; font-weight: 800;
}
.btn-upload { background: linear-gradient(135deg, var(--pink), var(--rose)); color: #fff; box-shadow: 0 14px 28px rgba(255,111,168,.22); }
.btn-primary { background: linear-gradient(135deg, var(--peach), #ffd163); color: #784016; box-shadow: 0 14px 28px rgba(255,182,110,.22); }

.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; }
.gallery-item {
  position: relative; aspect-ratio: 1; overflow: hidden; border-radius: 22px;
  background: rgba(255,255,255,.58); box-shadow: 0 16px 34px rgba(198,102,146,.18);
}
.gallery-item img, .gallery-item video { width: 100%; height: 100%; object-fit: cover; display: block; cursor: zoom-in; }
.gallery-item .zoom, .gallery-item .del {
  position: absolute; border: 0; cursor: pointer; font: inherit; font-weight: 800; color: #fff;
}
.gallery-item .zoom {
  left: 10px; bottom: 10px; padding: 8px 12px; border-radius: 999px;
  background: rgba(255,111,168,.88);
}
.gallery-item .del {
  top: 10px; right: 10px; width: 34px; height: 34px; border-radius: 12px; background: rgba(84,38,66,.75); font-size: 1.1rem;
}

.form { display: grid; gap: 12px; margin-bottom: 12px; }
.form input, .form textarea, .chat-form input, .chat-who select {
  width: 100%; padding: 14px 16px; border-radius: 16px; border: 1px solid rgba(255,255,255,.7);
  background: rgba(255,255,255,.6); font: inherit; color: var(--ink);
}
.form textarea { min-height: 110px; resize: vertical; }
.message-list { list-style: none; margin: 0; padding: 0; }
.message-list li { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.48); }
.msg-meta { color: var(--ink-soft); font-size: .9rem; margin-bottom: 6px; }
.msg-meta strong { color: var(--pink); }
.msg-body { margin: 0; }

.chat-toolbar { margin-bottom: 12px; }
.chat-who { display: inline-flex; align-items: center; gap: 10px; color: var(--ink-soft); }
.chat-box {
  height: min(360px, 48vh); overflow: auto; padding: 14px; margin-bottom: 12px;
  border-radius: 20px; background: rgba(255,255,255,.52); border: 1px solid rgba(255,255,255,.6);
}
.chat-line {
  margin-bottom: 10px; padding: 12px 14px; border-radius: 18px 18px 18px 6px;
  background: rgba(255,255,255,.74); box-shadow: 0 10px 18px rgba(198,102,146,.08);
}
.chat-line.me { background: rgba(127,216,255,.28); border-radius: 18px 18px 6px 18px; }
.chat-line .who { color: var(--pink); font-weight: 800; }
.chat-line.me .who { color: #2295c4; }
.chat-line .time { color: var(--ink-soft); font-size: .78rem; margin-left: 6px; }
.chat-form { display: grid; grid-template-columns: 1fr auto; gap: 10px; }

.footer {
  position: relative; z-index: 1; text-align: center; padding: 30px 18px 24px; color: var(--ink-soft);
}
.footer-ornament { color: var(--pink); margin-bottom: 8px; }

.photo-viewer {
  position: fixed; inset: 0; z-index: 50; display: grid; place-items: center;
  background: rgba(87, 33, 73, .45); backdrop-filter: blur(12px);
}
.photo-viewer-dialog {
  width: min(92vw, 1100px); max-height: 84vh; padding: 14px;
  border-radius: 30px; background: rgba(255,255,255,.9); box-shadow: 0 28px 60px rgba(87,33,73,.26);
}
.photo-viewer-media {
  display: block; width: 100%; max-height: calc(84vh - 28px); object-fit: contain; border-radius: 20px; background: #fff7fb;
}
.photo-viewer-close {
  position: absolute; top: 22px; right: 22px; width: 48px; height: 48px; border: 0; border-radius: 16px;
  background: rgba(255,255,255,.9); color: var(--pink); font-size: 1.5rem; cursor: pointer;
  box-shadow: 0 12px 30px rgba(87,33,73,.18);
}

@media (max-width: 760px) {
  .couple-showcase { grid-template-columns: 1fr; }
  .hero-centerpiece { order: 2; grid-auto-flow: column; gap: 16px; }
  .hero-center-line { width: 44px; height: 2px; background: linear-gradient(90deg, transparent, rgba(255,111,168,.5), transparent); }
  .timer-row, .birthdays, .chat-form { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .top-nav { flex-direction: column; gap: 12px; }
  .person-card { flex-direction: column; text-align: center; }
  .person-meta { text-align: center; }
  .timer-row, .birthdays, .chat-form { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}