/* ===== 个人网站样式：前台 + 后台共用 ===== */

:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --surface-2: #f0eeea;
  --ink: #23211e;
  --muted: #6f6b64;
  --border: #e5e2db;
  --accent: #4f46e5;
  --accent-soft: #eef0ff;
  --accent-ink: #3f38c9;
  --amber: #b45309;
  --amber-soft: #fdf3e3;
  --ok: #15803d;
  --ok-soft: #e8f6ec;
  --danger: #b91c1c;
  --danger-soft: #fdeaea;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(35, 33, 30, .05), 0 6px 24px rgba(35, 33, 30, .06);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17161a;
    --surface: #1f1e24;
    --surface-2: #27262e;
    --ink: #ecebe9;
    --muted: #9b9790;
    --border: #333138;
    --accent: #818cf8;
    --accent-soft: #262543;
    --accent-ink: #a5b4fc;
    --amber: #fbbf24;
    --amber-soft: #332a18;
    --ok: #4ade80;
    --ok-soft: #16301f;
    --danger: #f87171;
    --danger-soft: #3a1d1d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 24px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 20px;
}

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

img { max-width: 100%; }

/* ---------- 顶部导航 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}

.logo {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.2px;
}
.logo:hover { text-decoration: none; }
.logo-dot { color: var(--accent); }

.site-nav { display: flex; gap: 6px; }
.site-nav a {
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 15px;
}
.site-nav a:hover { color: var(--ink); text-decoration: none; background: var(--surface-2); }
.site-nav a.active { color: var(--accent-ink); background: var(--accent-soft); font-weight: 600; }

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 16px;
  cursor: pointer;
}

/* ---------- 主体 ---------- */

.main { flex: 1; padding-top: 40px; padding-bottom: 64px; }

/* ---------- 首页 Hero ---------- */

.hero {
  text-align: center;
  padding: 48px 0 40px;
}

.hero-avatar {
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  box-shadow: 0 8px 24px rgba(79, 70, 229, .35);
}

.hero-title {
  margin: 0 0 10px;
  font-size: clamp(28px, 5vw, 44px);
  letter-spacing: -.5px;
  background: linear-gradient(100deg, var(--ink) 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub { color: var(--muted); font-size: 17px; margin: 0 0 14px; }

.hero-intro {
  max-width: 560px;
  margin: 0 auto 26px;
  color: var(--muted);
}

.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */

.btn {
  display: inline-block;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 22px;
  font-size: 15px;
  font-family: var(--font);
  cursor: pointer;
  transition: transform .12s, box-shadow .12s, background .12s;
  line-height: 1.4;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(79, 70, 229, .28);
}
.btn-primary:hover { background: var(--accent-ink); }

.btn-ghost {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-ink); }

.btn-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-small { padding: 5px 14px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- 区块 ---------- */

.section { margin-top: 48px; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.section-title { margin: 0; font-size: 22px; letter-spacing: -.3px; }
.section-more { color: var(--muted); font-size: 14px; white-space: nowrap; }

.page-head { text-align: center; padding: 12px 0 28px; }
.page-head h1 { margin: 0 0 6px; font-size: 32px; letter-spacing: -.5px; }
.page-head p { margin: 0; color: var(--muted); }

.empty { color: var(--muted); text-align: center; padding: 28px 0; margin: 0; }

/* ---------- 卡片 / 项目 ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition: transform .15s, box-shadow .15s;
}
.project-card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(35, 33, 30, .1); }

.project-emoji {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 14px;
}

.project-title { margin: 0 0 4px; font-size: 18px; }
.project-sub { margin: 0 0 10px; color: var(--muted); font-size: 13.5px; }
.project-desc { margin: 0 0 14px; color: var(--muted); font-size: 14.5px; flex: 1; }
.project-link { font-size: 14px; font-weight: 600; margin-top: auto; }

/* ---------- 留言板 ---------- */

.gb-list { display: flex; flex-direction: column; gap: 14px; }

.gb-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  display: flex;
  gap: 14px;
}

.gb-avatar {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--amber-soft);
  color: var(--amber);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}

.gb-body { flex: 1; min-width: 0; }
.gb-head { display: flex; gap: 10px; align-items: baseline; }
.gb-head b { font-size: 15px; }
.gb-head time { color: var(--muted); font-size: 12.5px; }
.gb-content { margin: 6px 0 0; white-space: pre-wrap; word-break: break-word; font-size: 14.5px; }

.gb-reply {
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--accent-soft);
  border-radius: 10px;
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.gb-form-card { max-width: 640px; }

.gb-form { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.gb-form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); }
.gb-form input, .gb-form textarea {
  font-family: var(--font);
  font-size: 15px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
.gb-form input:focus, .gb-form textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 0;
  border-color: var(--accent);
}
.gb-form textarea { resize: vertical; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.hint { color: var(--muted); font-size: 13px; margin: 0; }

/* 蜜罐：藏起来 */
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }

/* ---------- 提示条 ---------- */

.flashes { display: flex; flex-direction: column; gap: 8px; padding: 14px 0 0; }

.flash {
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 14.5px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.flash-ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.flash-err { background: var(--danger-soft); color: var(--danger); border-color: transparent; }

/* ---------- 关于 ---------- */

.about-card { max-width: 680px; margin-bottom: 20px; }
.about-text { white-space: pre-line; margin: 12px 0 0; }
.about-card .btn { margin-top: 14px; }

/* ---------- 页脚 ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 13.5px;
  flex-wrap: wrap;
}

.footer-links { display: flex; gap: 14px; }
.footer-links a { color: var(--muted); }

/* ============================================================
   后台
   ============================================================ */

.admin-body { background: var(--bg); }

.admin-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.admin-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  height: 54px;
  flex-wrap: wrap;
}

.admin-brand { font-weight: 700; }

.admin-nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.admin-nav a {
  color: var(--muted);
  font-size: 14px;
  padding: 5px 12px;
  border-radius: 999px;
}
.admin-nav a:hover { color: var(--ink); text-decoration: none; background: var(--surface-2); }
.admin-nav a.active { background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; }

.inline-form { display: inline; }
.link-btn {
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  padding: 5px 12px;
  border-radius: 999px;
}
.link-btn:hover { color: var(--danger); background: var(--surface-2); }

.admin-main { padding-top: 28px; padding-bottom: 64px; }

.admin-page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.admin-page-title { margin: 0 0 20px; font-size: 26px; letter-spacing: -.3px; }
.admin-page-head .admin-page-title { margin: 0; }

.admin-section { margin-top: 24px; }

/* 统计卡片 */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 8px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--ink);
  transition: transform .12s;
}
.stat-card:hover { text-decoration: none; transform: translateY(-2px); }
.stat-num { font-size: 34px; font-weight: 800; color: var(--accent); letter-spacing: -.5px; }
.stat-label { color: var(--muted); font-size: 13.5px; }

/* 后台列表行 */

.admin-list { display: flex; flex-direction: column; gap: 12px; }

.admin-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  flex-wrap: wrap;
}

.admin-row.dimmed { opacity: .55; }
.admin-row-msg { align-items: flex-start; }

.admin-row-emoji { font-size: 24px; }
.admin-row-main { flex: 1; min-width: 220px; }
.admin-row-main b { font-size: 15.5px; }
.admin-row-main .hint { display: block; }

.admin-row-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.reply-form { display: flex; gap: 8px; margin-top: 10px; }
.reply-form input {
  flex: 1;
  min-width: 0;
  font-family: var(--font);
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  background: var(--surface);
  color: var(--ink);
}

/* 徽章 */

.badge {
  font-size: 12.5px;
  padding: 3px 10px;
  border-radius: 999px;
  flex: none;
  background: var(--surface-2);
  color: var(--muted);
}
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-pending { background: var(--amber-soft); color: var(--amber); }
.badge-off { background: var(--surface-2); color: var(--muted); }

/* 后台表单 */

.admin-form { max-width: 760px; margin-bottom: 24px; display: flex; flex-direction: column; gap: 16px; }

.admin-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

.admin-form input[type="text"], .admin-form input[type="password"], .admin-form input[type="number"],
.admin-form textarea {
  font-family: var(--font);
  font-size: 15px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
.admin-form input:focus, .admin-form textarea:focus {
  outline: 2px solid var(--accent);
  border-color: var(--accent);
}
.admin-form textarea { resize: vertical; }

.checkbox-label {
  flex-direction: row !important;
  align-items: center;
  gap: 8px !important;
  color: var(--ink) !important;
  padding-top: 26px;
}

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

/* 登录页 */

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-title { margin: 0; font-size: 24px; text-align: center; }
.login-sub { margin: -8px 0 4px; text-align: center; color: var(--muted); font-size: 14px; }

.login-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}
.login-card input {
  font-family: var(--font);
  font-size: 15px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
.login-card input:focus { outline: 2px solid var(--accent); border-color: var(--accent); }

/* ---------- 响应式 ---------- */

@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 10px 20px 16px;
    gap: 2px;
  }
  .site-nav.open { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .admin-bar-inner { height: auto; padding: 10px 20px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .main { padding-top: 24px; }
}