/* ══════════════════════════════════════════
   Mohe · 个人产品集  v0.1.0
   双主题 · Apple 极简风
   ══════════════════════════════════════════ */

:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --border: rgba(0, 0, 0, 0.08);
  --accent: #0071e3;
  --nav-bg: rgba(245, 245, 247, 0.72);
  --shadow-hover: 0 24px 48px rgba(0, 0, 0, 0.12);
  --chip-bg: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
  --bg: #0a0a0c;
  --card: #161618;
  --text: #f5f5f7;
  --text-2: #a1a1a6;
  --border: rgba(255, 255, 255, 0.1);
  --accent: #2997ff;
  --nav-bg: rgba(10, 10, 12, 0.72);
  --shadow-hover: 0 24px 48px rgba(0, 0, 0, 0.55);
  --chip-bg: rgba(255, 255, 255, 0.07);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "SF Pro SC", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  transition: background 0.35s ease, color 0.35s ease;
  overflow-x: hidden;
}

/* ══════════ 导航 ══════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  height: 60px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.brand-dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}

.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

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

.theme-toggle {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--card);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform 0.25s, box-shadow 0.25s;
}

.theme-toggle:hover { transform: scale(1.08); box-shadow: 0 4px 12px rgba(0,0,0,0.12); }

/* ══════════ 总 · Hero ══════════ */
.hero {
  min-height: 92vh;
  display: grid;
  place-items: center;
  position: relative;
  padding: 120px 24px 80px;
  background:
    radial-gradient(ellipse 60% 50% at 50% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent),
    var(--bg);
}

.hero-inner { text-align: center; max-width: 880px; }

.hero-badge {
  display: inline-block;
  font-size: 14px;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(42px, 7.5vw, 84px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 24px;
}

.grad-text {
  background: linear-gradient(120deg, var(--accent), #a06bff 55%, #ff6482);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: clamp(16px, 2.2vw, 21px);
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 0;
}

.hero-stat {
  padding: 0 40px;
  text-align: center;
}

.hero-stat + .hero-stat { border-left: 1px solid var(--border); }

.hero-stat b {
  display: block;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-stat span {
  font-size: 13px;
  color: var(--text-2);
}

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-2);
  animation: cue-bounce 2s ease-in-out infinite;
}

@keyframes cue-bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ══════════ 分 · 产品矩阵 ══════════ */
.products {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 100px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 36px;
}

.section-title {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-sub {
  margin-top: 8px;
  font-size: 15px;
  color: var(--text-2);
}

.chips { display: flex; gap: 10px; flex-wrap: wrap; }

.chip {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-2);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.25s;
}

.chip:hover { border-color: var(--accent); color: var(--accent); }

.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ── 卡片网格 ── */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.35s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.card.hidden { display: none; }

/* ── 封面区 ── */
.cover {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--g1, #5b8cff), var(--g2, #8f6bff));
  display: grid;
  place-items: center;
  overflow: hidden;
}

.cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 30% 20%, rgba(255,255,255,0.28), transparent 60%);
  pointer-events: none;
}

.ph {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  transition: opacity 0.4s;
}

.ph-icon {
  display: block;
  font-size: 52px;
  filter: drop-shadow(0 6px 16px rgba(0,0,0,0.25));
  margin-bottom: 10px;
}

.ph-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 10px rgba(0,0,0,0.25);
}

.shot {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
}

.demo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.45s;
}

.demo.live { opacity: 1; }

.demo-chip {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 4;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 12px;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.3s;
  pointer-events: none;
}

.demo-chip.live { opacity: 1; transform: translateY(0); }

/* ── 卡片信息区 ── */
.card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.card-row h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.badge {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.badge.b-online { color: #1d9d4f; background: rgba(52, 199, 89, 0.14); }
.badge.b-download { color: #d97a00; background: rgba(255, 149, 0, 0.14); }

[data-theme="dark"] .badge.b-online { color: #4cd964; }
[data-theme="dark"] .badge.b-download { color: #ffb340; }

.card-desc {
  margin: 9px 0 16px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-2);
  flex: 1;
}

.card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { filter: brightness(1.12); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
}

.btn-ghost:hover { background: color-mix(in srgb, var(--accent) 10%, transparent); }

/* ══════════ 总 · 关于 ══════════ */
.about {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 90px;
  text-align: center;
}

.about-text {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-2);
}

.tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.tag {
  font-size: 13px;
  padding: 7px 15px;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--text-2);
}

.about-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 32px;
}

/* ══════════ 页脚 ══════════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-2);
}

/* ══════════ 滚动浮现 ══════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.in { opacity: 1; transform: translateY(0); }

/* ══════════ 响应式 ══════════ */
@media (max-width: 700px) {
  .grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .hero-stat { padding: 0 24px; }
}

@media (max-width: 480px) {
  .grid { grid-template-columns: 1fr; }
  .nav-links { gap: 18px; }
  .hero { min-height: 88vh; }
  .hero-stats { flex-wrap: wrap; gap: 18px 0; }
  .hero-stat { padding: 0 20px; }
  .hero-stat b { font-size: 26px; }
  .section-head { flex-direction: column; align-items: flex-start; }
}