/* 私人日记 — clean, restrained UI with light & dark support */
:root {
  --bg: #f7f8fb;
  --bg-grad: linear-gradient(180deg, #fbfcff 0%, #f5f7fb 46%, #eef2f9 100%);
  --panel: #ffffff;
  --panel-soft: #f8fafc;
  --text: #1c2433;
  --text-soft: #46566c;
  --muted: #8793a5;
  --line: #e7ebf2;
  --line-strong: #d6dce6;
  --primary: #3563e9;
  --primary-dark: #244fc7;
  --primary-soft: #eef3ff;
  --danger: #d83a3a;
  --shadow: 0 14px 40px rgba(20, 32, 54, .07);
  --shadow-sm: 0 4px 14px rgba(20, 32, 54, .05);
  --radius: 18px;
  --radius-sm: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1320;
    --bg-grad: radial-gradient(1200px 600px at 80% -10%, #1a2236 0%, #0f1320 55%);
    --panel: #171c2b;
    --panel-soft: #1d2436;
    --text: #e7ecf5;
    --text-soft: #b7c0d2;
    --muted: #7e8aa1;
    --line: #283047;
    --line-strong: #323c57;
    --primary: #6f93ff;
    --primary-dark: #5879f0;
    --primary-soft: #1e2740;
    --danger: #ff6b6b;
    --shadow: 0 16px 44px rgba(0, 0, 0, .35);
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); }

/* ---------- Nav ---------- */
.nav {
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(20px, env(safe-area-inset-left)) 0 max(20px, env(safe-area-inset-right));
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 17px; }
.nav-actions { display: flex; gap: 6px; align-items: center; }
.nav-actions a {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 14px;
  padding: 7px 12px;
  border-radius: 10px;
}
.nav-actions a:hover { background: var(--panel-soft); color: var(--text); }
.nav-actions a.active { color: var(--primary); background: var(--primary-soft); }
.nav-actions a.ghost { color: var(--muted); }

/* ---------- Layout ---------- */
.container {
  width: min(880px, calc(100% - 32px));
  margin: 28px auto 96px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 30px 26px;
  box-shadow: var(--shadow);
  margin-bottom: 22px;
}
.eyebrow { margin: 0 0 10px; color: var(--muted); font-size: 13px; letter-spacing: .01em; }
.hero h1 { margin: 0 0 22px; font-size: 27px; letter-spacing: -.01em; line-height: 1.35; }
.stats { display: flex; gap: 28px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat b { font-size: 22px; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12px; color: var(--muted); }
.primary-link {
  position: absolute;
  top: 26px;
  right: 26px;
  background: var(--primary);
  color: #fff;
  padding: 11px 17px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary) 35%, transparent);
}
.primary-link:hover { background: var(--primary-dark); }

/* ---------- Search & filters ---------- */
.search { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; }
.search input { flex: 1; }
.search-clear { font-size: 13px; color: var(--muted); text-decoration: none; white-space: nowrap; }
.search button { flex: none; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  text-decoration: none;
  color: var(--text-soft);
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
}
.filter-chip:hover { border-color: var(--line-strong); }
.filter-chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.filter-chip .count { opacity: .65; font-size: 12px; }
.result-note { margin: 4px 2px 0; font-size: 13px; }

/* ---------- Feed ---------- */
.feed { margin-top: 18px; }
.group-title {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
  margin: 26px 2px 12px;
  letter-spacing: .02em;
}
.feed .group-title:first-child { margin-top: 6px; }
.entries {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.entry-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.entry-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.entry-meta { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted); }
.entry-meta .time { color: var(--muted); text-decoration: none; }
.entry-meta .time:hover { color: var(--primary); }
.entry-card h2 { margin: 9px 0 8px; font-size: 17px; line-height: 1.4; }
.entry-card h2 a { color: var(--text); text-decoration: none; }
.entry-card h2 a:hover { color: var(--primary); }
.preview { margin: 0 0 14px; color: var(--text-soft); font-size: 14px; flex: 1; }
.entry-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12.5px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}
.edit-link { text-decoration: none; }
.mood {
  display: inline-flex;
  align-items: center;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  text-decoration: none;
}

/* ---------- Cards (editor / reader / login) ---------- */
.editor-card, .reader-card, .login-card, .empty {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.editor-card, .reader-card { max-width: 720px; margin: 0 auto; }
.editor-card h1, .reader-card h1 { margin-top: 0; }
.reader-card h1 { font-size: 26px; line-height: 1.35; margin: 6px 0 18px; }
.back { margin: 0 0 14px; }
.back a { text-decoration: none; color: var(--muted); font-size: 14px; }
.back a:hover { color: var(--primary); }
.reader-card .entry-meta { flex-wrap: wrap; gap: 8px; }
.entry-body { font-size: 16.5px; color: var(--text); margin: 18px 0 26px; }
.entry-body p { margin: 0 0 1em; white-space: normal; word-break: break-word; }
.reader-actions { display: flex; gap: 10px; align-items: center; border-top: 1px solid var(--line); padding-top: 18px; }

/* ---------- Forms ---------- */
.form { display: flex; flex-direction: column; gap: 10px; }
.form label { font-weight: 600; font-size: 13.5px; color: var(--text-soft); margin-top: 8px; }
input, textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 12px 13px;
  font: inherit;
  background: var(--panel-soft);
  color: var(--text);
  outline: none;
  transition: border-color .12s ease, box-shadow .12s ease;
}
input::placeholder, textarea::placeholder { color: var(--muted); }
input:focus, textarea:focus {
  border-color: var(--primary);
  background: var(--panel);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 14%, transparent);
}
textarea { resize: vertical; min-height: 220px; line-height: 1.7; }
button {
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  padding: 11px 18px;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background .12s ease;
}
button:hover { background: var(--primary-dark); }
.btn-ghost {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-soft);
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- Mood chips (editor) ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  background: var(--panel-soft);
  color: var(--text-soft);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
}
.chip:hover { border-color: var(--primary); color: var(--primary); background: var(--panel); }
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---------- Editor bar ---------- */
.editor-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.editor-stats { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--muted); }
.editor-stats b { color: var(--text-soft); font-variant-numeric: tabular-nums; }
.autosave { color: var(--muted); font-size: 12.5px; }
.editor-actions { display: flex; gap: 10px; align-items: center; }
.hint { margin: 12px 0 0; font-size: 12.5px; }

/* ---------- Draft banner ---------- */
.draft-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  background: color-mix(in srgb, var(--primary) 8%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--line));
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13.5px;
  color: var(--text-soft);
}
.draft-banner .draft-actions { display: flex; gap: 8px; }
.draft-banner button {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 9px;
}
.draft-banner button.secondary { background: transparent; color: var(--muted); border: 1px solid var(--line-strong); }
.draft-banner button.secondary:hover { color: var(--text); }

/* ---------- Danger ---------- */
.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 40%, var(--line));
}
.danger:hover { background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger); }

/* ---------- Login ---------- */
.login-card { max-width: 400px; margin: 10vh auto 0; text-align: center; }
.login-logo { font-size: 40px; margin-bottom: 6px; }
.login-card h1 { margin: 0 0 6px; font-size: 26px; }
.login-card .muted { margin: 0 0 18px; }
.login-card .form { text-align: left; }
.muted { color: var(--muted); }

/* ---------- Misc ---------- */
.error {
  background: color-mix(in srgb, var(--danger) 10%, var(--panel));
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--line));
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 14px;
}
.empty {
  text-align: center;
  color: var(--muted);
  padding: 44px 24px;
}
.empty a { margin-left: 6px; }

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .container { width: calc(100% - 24px); margin: 18px auto 80px; }
  .hero { padding: 22px 20px; }
  .hero h1 { font-size: 22px; margin-bottom: 18px; }
  .stats { gap: 20px; }
  .primary-link {
    position: static;
    display: inline-block;
    margin-top: 18px;
  }
  .editor-card, .reader-card, .login-card { padding: 20px; }
  .entries { grid-template-columns: 1fr; }
  .nav-actions a { padding: 7px 9px; }
  .reader-card h1 { font-size: 22px; }
  .editor-bar { flex-direction: column; align-items: stretch; }
  .editor-actions { justify-content: flex-end; }
}