/* =========================================================
   陈启正 · 互动编程作品集 站点样式
   五色配色与各作品保持一致
   ========================================================= */
:root {
  --ink:   #0E1B2A;
  --paper: #F3EDE3;
  --coral: #E4572E;
  --blue:  #3D7EA6;
  --sand:  #D8C3A5;
  --paper-dim: rgba(243, 237, 227, 0.62);
  --line: rgba(243, 237, 227, 0.15);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
}

a { color: inherit; }

/* ---------------- 顶部导航 ---------------- */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px clamp(18px, 5vw, 64px);
  background: rgba(14, 27, 42, 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.logo {
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.04em;
}

.logo-dot { color: var(--coral); }

.nav-links { display: flex; gap: clamp(14px, 3vw, 30px); }

.nav-links a {
  font-size: 13.5px;
  text-decoration: none;
  color: var(--paper-dim);
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--coral); }

/* ---------------- 版心 ---------------- */
main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 clamp(18px, 5vw, 64px);
}

/* ---------------- 首屏 ---------------- */
.hero { padding: clamp(56px, 12vh, 120px) 0 clamp(36px, 7vh, 72px); }

.eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--sand);
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 7vw, 64px);
  font-weight: 700;
  line-height: 1.15;
}

.name {
  color: var(--coral);
  margin-left: 0.12em;
}

.tagline {
  margin: 0 0 30px;
  max-width: 34em;
  font-size: clamp(14px, 1.8vw, 16.5px);
  color: var(--paper-dim);
}
.tagline b { color: var(--paper); font-weight: 600; }

.cta {
  display: inline-block;
  padding: 11px 30px;
  border: 1px solid var(--coral);
  border-radius: 100px;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--coral);
  transition: background 0.2s ease, color 0.2s ease;
}
.cta:hover { background: var(--coral); color: var(--ink); }

/* ---------------- 区块标题 ---------------- */
.section-title {
  margin: 0 0 clamp(20px, 4vh, 36px);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 600;
}
.section-title::after {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  margin-top: 10px;
  background: var(--coral);
}

.works { padding: clamp(24px, 6vh, 60px) 0; }

/* ---------------- 作品卡片 ---------------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(14px, 2.4vw, 22px);
}

.work-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: 10px;
  text-decoration: none;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

.work-card::after {
  content: "";
  position: absolute;
  right: -44px;
  bottom: -44px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--coral);
  opacity: 0.1;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.work-card:hover {
  border-color: var(--coral);
  transform: translateY(-4px);
  background: rgba(228, 87, 46, 0.05);
}

/* 主打游戏：占整行，更醒目 */
.work-card.is-featured {
  grid-column: 1 / -1;
  border-color: rgba(228, 87, 46, 0.5);
  background: linear-gradient(150deg, rgba(228, 87, 46, 0.12), rgba(14, 27, 42, 0) 55%);
}
.work-card.is-featured::after { opacity: 0.2; }
.work-card.is-featured:hover { transform: translateY(-4px); }
.work-card.is-featured h3 { font-size: clamp(24px, 3.6vw, 34px); }

.work-no {
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--coral);
}

.work-card h3 {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 600;
}

.work-card p {
  margin: 0;
  font-size: 13.5px;
  color: var(--paper-dim);
}

.work-tag {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--sand);
  border: 1px solid rgba(216, 195, 165, 0.35);
  border-radius: 100px;
  padding: 3px 10px;
  align-self: flex-start;
}

.featured-note {
  font-size: 12.5px;
  color: var(--coral);
}

/* ---------------- 关于我 ---------------- */
.about { padding: clamp(24px, 6vh, 60px) 0 clamp(36px, 8vh, 80px); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(14px, 2.4vw, 22px);
}

.about-item {
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.about-item h4 {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--sand);
}

.about-item p { margin: 0; font-size: 14px; color: var(--paper-dim); }

.about-item a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--coral);
}
.about-item a:hover { color: var(--coral); }

/* ---------------- 页脚 ---------------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px clamp(18px, 5vw, 64px);
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 12px;
  color: rgba(243, 237, 227, 0.38);
}

/* ---------------- 作品详情页 ---------------- */
.detail-page .detail-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 90px clamp(18px, 5vw, 64px) 60px;
}

.detail-head { margin-bottom: 22px; }

.detail-head .work-no {
  display: block;
  margin-bottom: 10px;
}

.detail-head h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
}

.detail-head .one-line {
  margin: 0;
  font-size: clamp(14px, 1.8vw, 16px);
  color: var(--paper-dim);
}

/* 作品内嵌窗口 */
.iframe-wrap {
  position: relative;
  width: 100%;
  height: 520px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--ink);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.iframe-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* 作品信息四栏 */
.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(14px, 2.2vw, 20px);
  margin: clamp(20px, 4vh, 34px) 0;
}

.meta-item {
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.meta-item h3 {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--sand);
  font-weight: 600;
}

.meta-item p {
  margin: 0;
  font-size: 14px;
  color: var(--paper-dim);
}

.open-standalone {
  display: inline-block;
  font-size: 13.5px;
  color: var(--coral);
  text-decoration: none;
  border-bottom: 1px dashed rgba(228, 87, 46, 0.5);
  padding-bottom: 2px;
}
.open-standalone:hover { color: var(--paper); border-color: var(--paper); }

/* 详情页返回按钮 */
.back-link {
  position: fixed;
  top: 16px;
  left: 20px;
  z-index: 50;
  padding: 7px 14px;
  border: 1px solid rgba(243, 237, 227, 0.22);
  border-radius: 100px;
  font-size: 12px;
  text-decoration: none;
  color: rgba(243, 237, 227, 0.72);
  background: rgba(14, 27, 42, 0.6);
  backdrop-filter: blur(4px);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.back-link:hover { color: var(--paper); border-color: var(--coral); }

/* ---------------- 移动端 ---------------- */
@media (max-width: 720px) {
  .work-grid, .about-grid, .meta-grid { grid-template-columns: 1fr; }
  .iframe-wrap { height: 420px; }
  .detail-page .detail-main { padding-top: 76px; }
}