:root {
  --bg: #0b0d12;
  --surface: #141820;
  --surface2: #1c2230;
  --border: #2a3344;
  --text: #e8ecf4;
  --muted: #8b95a8;
  --accent: #6ee7a0;
  --accent-dim: #3dd68c;
  --danger: #f87171;
  --warn: #fbbf24;
  --radius: 12px;
  --font: "SF Pro Text", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.5; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.site {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.5rem; border-bottom: 1px solid var(--border);
  background: rgba(11,13,18,.85); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 10;
}
.logo { font-size: 1.25rem; font-weight: 700; color: var(--text); letter-spacing: -.02em; }
.logo span { color: var(--accent); }
nav { display: flex; gap: 1rem; align-items: center; }
nav a { color: var(--muted); font-size: .9rem; }
nav a.primary { background: var(--accent-dim); color: #052e16; padding: .45rem .9rem; border-radius: 8px; font-weight: 600; text-decoration: none; }
nav a.primary:hover { filter: brightness(1.05); text-decoration: none; }

main.page { max-width: 960px; margin: 0 auto; padding: 2rem 1.5rem 4rem; }
main.page.wide { max-width: 1100px; }

.hero { text-align: center; padding: 2rem 0 1rem; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 .75rem; letter-spacing: -.03em; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero .sub { color: var(--muted); max-width: 520px; margin: 0 auto 1.5rem; }

.toolbar {
  display: flex; flex-wrap: wrap; gap: .75rem; align-items: center;
  margin-bottom: 1.25rem;
}
.toolbar input[type=search], .toolbar select {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  padding: .55rem .75rem; border-radius: 8px; font-size: .9rem;
}
.toolbar input[type=search] { flex: 1; min-width: 180px; }
.tag-filters { display: flex; flex-wrap: wrap; gap: .4rem; }
.tag-filters button {
  background: var(--surface2); border: 1px solid var(--border); color: var(--muted);
  padding: .3rem .65rem; border-radius: 999px; font-size: .8rem; cursor: pointer;
}
.tag-filters button.active { border-color: var(--accent); color: var(--accent); background: rgba(110,231,160,.08); }

.card-list { display: grid; gap: 1rem; }
.project-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.25rem; transition: border-color .15s;
}
.project-card:hover { border-color: #3d4d66; }
.project-card h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
.project-card h3 a { color: var(--text); text-decoration: none; }
.project-card h3 a:hover { color: var(--accent); }
.project-card .desc { color: var(--muted); font-size: .9rem; margin: 0 0 .75rem; }
.project-card .meta { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; font-size: .8rem; color: var(--muted); }
.project-card .tags span {
  background: var(--surface2); padding: .15rem .5rem; border-radius: 999px; margin-right: .35rem;
}
.vote-btns { display: inline-flex; gap: .25rem; }
.vote-btns button {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  padding: .2rem .5rem; border-radius: 6px; cursor: pointer; font-size: .8rem;
}
.vote-btns button.active-up { border-color: var(--accent); color: var(--accent); }
.vote-btns button.active-down { border-color: var(--danger); color: var(--danger); }
.vote-btns button:disabled { opacity: .4; cursor: not-allowed; }

.form-card {
  max-width: 420px; margin: 2rem auto; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.75rem;
}
.form-card h2 { margin: 0 0 1.25rem; font-size: 1.25rem; }
.form-card label:not(.checkbox-row) { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .35rem; }
.form-card input:not([type="checkbox"]), .form-card textarea, .form-card select {
  width: 100%; margin-bottom: 1rem; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); padding: .6rem .75rem; border-radius: 8px; font-size: .95rem;
}
.form-card textarea { min-height: 80px; resize: vertical; }
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem 0;
  cursor: pointer;
  white-space: nowrap;
}
.checkbox-row input[type="checkbox"] {
  width: auto;
  margin: 0;
  flex-shrink: 0;
}
.form-card .checkbox-row {
  display: flex;
}

/* 个人中心 / 弹窗表单（与 .form-card 同结构） */
#projectDialog {
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0;
  max-width: 480px;
  width: calc(100% - 2rem);
  margin: auto;
  border: 1px solid var(--border);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}
#projectDialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}
#projectDialog form,
.dialog-form {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  margin: 0;
}
#projectDialog form h3,
.dialog-form h3 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
}
#projectDialog form label,
.dialog-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
#projectDialog form input,
#projectDialog form textarea,
#projectDialog form select,
.dialog-form input,
.dialog-form textarea,
.dialog-form select {
  width: 100%;
  margin-bottom: 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
}
#projectDialog form textarea,
.dialog-form textarea {
  min-height: 80px;
  resize: vertical;
}
#projectDialog form select[multiple],
.dialog-form select[multiple] {
  min-height: 6.5rem;
}
.tag-fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem 0.25rem;
  margin: 0 0 1rem;
}
.tag-fieldset legend {
  font-size: 0.85rem;
  color: var(--muted);
  padding: 0 0.35rem;
}
.tag-fieldset label {
  margin-top: 0.25rem;
}
.tag-fieldset select,
.tag-fieldset .tag-custom {
  margin-bottom: 0.75rem;
}
.tag-fieldset .tag-custom[hidden] {
  display: none !important;
}
#projectDialog .form-actions,
.dialog-form .form-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.25rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block; background: var(--accent-dim); color: #052e16; border: none;
  padding: .6rem 1.1rem; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: .95rem;
}
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.block { width: 100%; text-align: center; }
.btn.danger { background: var(--danger); color: #fff; }
.msg { font-size: .85rem; margin-top: .5rem; }
.msg.error { color: var(--danger); }
.msg.ok { color: var(--accent); }

.tabs { display: flex; gap: .5rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); }
.tabs button {
  background: none; border: none; color: var(--muted); padding: .6rem 1rem; cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; text-align: center; }
.stat-box .num { font-size: 1.6rem; font-weight: 700; color: var(--accent); }
.stat-box .lbl { font-size: .8rem; color: var(--muted); }

table.data { width: 100%; border-collapse: collapse; font-size: .85rem; }
table.data th, table.data td { padding: .6rem .75rem; border-bottom: 1px solid var(--border); text-align: left; }
table.data th { color: var(--muted); font-weight: 500; }

footer.site { text-align: center; padding: 2rem; color: var(--muted); font-size: .8rem; border-top: 1px solid var(--border); }

.empty { text-align: center; color: var(--muted); padding: 3rem 1rem; }

@media (max-width: 600px) {
  header.site { flex-direction: column; gap: .75rem; align-items: flex-start; }
}