/* ===========================================================
   Project-Birthday · 页面样式
   配色/圆角/间距全部来自 tokens.css
   =========================================================== */

/* —— 基础 —— */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--cream-100);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a {
  color: var(--accent);
  text-decoration: none;
}

button { font-family: inherit; }

/* ===========================================================
   密码锁
   =========================================================== */
.lock {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: grid;
  place-items: center;
  background: var(--cream-100);
}

.lock-card {
  width: min(360px, 88vw);
  padding: var(--space-4);
  text-align: center;
}

.lock-kicker {
  margin: 0 0 var(--space-2);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.lock-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.lock-input {
  display: block;
  width: 100%;
  margin: 0 0 var(--space-2);
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: #FFFDFB;
  color: var(--ink);
  font-family: inherit;
  font-size: 16px;
  letter-spacing: 0.3em;
  text-align: center;
}

.lock-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

.lock-error {
  min-height: 1.4em;
  margin: var(--space-1) 0 0;
  color: #C0392B;
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ===========================================================
   开场页
   =========================================================== */
.welcome {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: var(--cream-100);
  overflow: hidden;
  transition: opacity var(--dur-slow) var(--ease-out),
              visibility var(--dur-slow) var(--ease-out);
}

.welcome.is-leaving {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.welcome-glow {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  background: radial-gradient(circle at center,
              rgba(201, 123, 99, 0.22) 0%,
              rgba(248, 223, 209, 0.35) 40%,
              rgba(255, 248, 241, 0) 70%);
  filter: blur(8px);
  pointer-events: none;   /* 关键：光晕只做装饰，不拦截点击 */
  z-index: 0;
  animation: breathe 7s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50%      { transform: scale(1.08); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .welcome-glow { animation: none; }
}

.welcome-inner {
  position: relative;
  z-index: 1;   /* 内容层在光晕之上 */
  text-align: center;
  padding: var(--space-4);
  animation: rise var(--dur-slow) var(--ease-out) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .welcome-inner { animation: none; }
}

.welcome-kicker {
  margin: 0 0 var(--space-2);
  font-size: 13px;
  letter-spacing: 0.35em;
  color: var(--muted);
}

.welcome-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(34px, 6vw, 56px);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ink);
}

.welcome-sub {
  margin: var(--space-2) 0 var(--space-4);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.pill-btn {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #FFFBF6;
  font-size: 14px;
  letter-spacing: 0.25em;
  padding: 14px 36px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}

.pill-btn:hover {
  background: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lift);
}

.pill-btn:active {
  transform: translateY(0) scale(0.98);
}

.pill-btn:focus-visible {
  outline: 2px solid var(--accent-deep);
  outline-offset: 3px;
}

/* ===========================================================
   主应用 · 顶栏
   =========================================================== */
.app {
  animation: fadein var(--dur-slow) var(--ease-out) both;
}

@keyframes fadein {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .app { animation: none; }
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0 var(--space-3);
  background: rgba(255, 248, 241, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.nav {
  display: flex;
  gap: var(--space-3);
}

.nav a {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  transition: color var(--dur-fast) var(--ease-out);
}

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

@media (max-width: 640px) {
  .nav { gap: var(--space-2); }
  .nav a { font-size: 12px; }
}

/* ===========================================================
   通用 section
   =========================================================== */
.main { display: block; }

.section {
  width: min(var(--max-width), 100% - var(--space-4));
  margin: 0 auto;
  padding: var(--space-5) 0;
}

.section-head {
  margin-bottom: var(--space-3);
}

.section-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.section-desc {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ===========================================================
   Hero 倒计时
   =========================================================== */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  align-items: stretch;
}

.hero-card {
  position: relative;
  padding: var(--space-4) var(--space-3);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #FFFDFB 0%, var(--cream-200) 100%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.hero-card--accent {
  background: linear-gradient(160deg, var(--accent-soft) 0%, #F5D2C0 100%);
  border-color: #EEC5B1;
}

.hero-label {
  margin: 0 0 var(--space-1);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.hero-num {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.hero-num .num {
  font-size: clamp(44px, 8vw, 72px);
  font-weight: 650;
  line-height: 1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.hero-card--accent .hero-num .num { color: var(--accent-deep); }

.hero-num .unit {
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.hero-note {
  margin: var(--space-2) 0 0;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

@media (max-width: 720px) {
  .hero { grid-template-columns: 1fr; }
}

/* ===========================================================
   照片墙（瀑布流）
   =========================================================== */
.photo-wall {
  columns: 3 260px;
  column-gap: var(--space-2);
}

.photo-item {
  break-inside: avoid;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--cream-200);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}

.photo-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.photo-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.photo-item img {
  width: 100%;
  height: auto;
}

/* 占位图（无照片时） */
.photo-placeholder {
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent-soft), #FDF0E4);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.photo-placeholder--tall { aspect-ratio: 3 / 4; }

/* 大图查看层 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: var(--space-3);
  background: rgba(74, 55, 40, 0.86);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease-out),
              visibility var(--dur-base) var(--ease-out);
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: min(92vw, 1000px);
  max-height: 86vh;
  border-radius: var(--radius-md);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
}

.lightbox-close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 248, 241, 0.4);
  border-radius: 50%;
  background: rgba(255, 248, 241, 0.12);
  color: #FFF8F1;
  font-size: 20px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
}

.lightbox-close:hover { background: rgba(255, 248, 241, 0.24); }

/* ===========================================================
   时间轴
   =========================================================== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--space-3);
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-soft), var(--line));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding: 0 0 var(--space-3) var(--space-3);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--cream-100), 0 0 0 5px var(--line);
}

.timeline-date {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.timeline-title {
  margin: 2px 0 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.timeline-text {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

/* ===========================================================
   小惊喜
   =========================================================== */
.game-card {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px dashed #E4C7B4;
  background: var(--cream-50);
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.04em;
}

/* ===========================================================
   页脚
   =========================================================== */
.footer {
  padding: var(--space-4) var(--space-2) var(--space-5);
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.footer .heart {
  color: var(--accent);
  display: inline-block;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.18); }
}

@media (prefers-reduced-motion: reduce) {
  .footer .heart { animation: none; }
}

/* —— 小工具 —— */
[hidden] { display: none !important; }