/* ══════════════════════════════════════════
   溟月 · MINGYUE
   风格：暗色工程感 / 等宽字体 / 网格与标尺
   ══════════════════════════════════════════ */

:root {
  /* 一套就能换整站 —— AI 主题引擎改的就是这些 */
  --bg:       #0b0c0f;
  --bg2:      #12141a;
  --surface:  #171a21;
  --line:     #262b36;
  --line2:    #333a48;
  --ink:      #e6e8ec;
  --ink-soft: #8a919f;
  --ink-dim:  #565d6b;
  --acc:      #6ee7b7;
  --acc2:     #60a5fa;
  --warn:     #fbbf24;
  --fs:       15px;
  --radius:   2px;
  --mono:     "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  --sans:     "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: var(--fs);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 极细网格背景 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: .18;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 85%);
}

/* ══════════ 状态条 ══════════ */
.statusbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 34px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-soft);
  background: rgba(11,12,15,.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  z-index: 100;
}

.statusbar .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--acc);
  box-shadow: 0 0 8px var(--acc);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; }
  50%     { opacity: .3; }
}

.statusbar .sep { color: var(--line2); }
.statusbar .spacer { flex: 1; }
.statusbar .ver { color: var(--ink-dim); }

/* ══════════ 布局 ══════════ */
main {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ══════════ Hero ══════════ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 0 80px;
}

.hero-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--acc);
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp .7s .1s forwards;
}

.hero-name {
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 26px;
  opacity: 0;
  animation: fadeUp .7s .2s forwards;
}

.hero-name .cn {
  font-size: clamp(52px, 11vw, 108px);
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1;
  background: linear-gradient(150deg, var(--ink) 30%, var(--ink-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-name .en {
  font-family: var(--mono);
  font-size: clamp(13px, 2vw, 17px);
  letter-spacing: .34em;
  color: var(--ink-dim);
  font-weight: 300;
}

.hero-line {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--acc) 0%, var(--line) 35%, transparent 100%);
  margin-bottom: 30px;
  opacity: 0;
  animation: fadeUp .7s .3s forwards;
}

.hero-desc {
  font-size: 1.02rem;
  color: var(--ink-soft);
  line-height: 2;
  margin-bottom: 44px;
  opacity: 0;
  animation: fadeUp .7s .4s forwards;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 52px;
  opacity: 0;
  animation: fadeUp .7s .5s forwards;
}

.meta-item {
  background: var(--bg);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.meta-item .k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-dim);
}

.meta-item .v {
  font-size: .9rem;
  color: var(--ink);
}

.hero-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  opacity: 0;
  animation: fadeUp .7s .6s forwards;
}

.hero-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: .25s;
}

.hero-nav a:hover {
  color: var(--acc);
  border-bottom-color: var(--acc);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

/* ══════════ 区块 ══════════ */
.block {
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.block-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.block-head .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--acc);
  letter-spacing: .1em;
  padding: 3px 8px;
  border: 1px solid var(--line2);
}

.block-head h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
}

.block-head .cn-sub {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 300;
  color: var(--ink-dim);
  letter-spacing: .16em;
  margin-left: 6px;
}

.block-head .rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line2), transparent);
}

.block-desc {
  color: var(--ink-soft);
  margin-bottom: 28px;
  font-size: .94rem;
}

/* ══════════ 作品列表 ══════════ */
.work-list {
  border-top: 1px solid var(--line);
}

.work-item {
  display: grid;
  grid-template-columns: 52px 1fr 30px;
  gap: 20px;
  align-items: center;
  padding: 26px 12px;
  border-bottom: 1px solid var(--line);
  transition: .28s cubic-bezier(.2,.8,.2,1);
  cursor: pointer;
}

.work-item:hover {
  background: var(--bg2);
  padding-left: 24px;
}

.work-idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  letter-spacing: .08em;
}

.work-item:hover .work-idx { color: var(--acc); }

.work-main h3 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--ink);
}

.work-main p {
  font-size: .88rem;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tags span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  padding: 2px 8px;
}

.work-arrow {
  font-family: var(--mono);
  color: var(--ink-dim);
  transition: .28s;
}

.work-item:hover .work-arrow {
  color: var(--acc);
  transform: translateX(6px);
}

/* ══════════ 关于 ══════════ */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.about-cell {
  background: var(--bg);
  padding: 28px 22px;
  transition: .28s;
}

.about-cell:hover { background: var(--bg2); }

.about-k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--ink-dim);
  margin-bottom: 12px;
}

.about-v {
  font-size: .95rem;
  color: var(--ink);
  line-height: 1.6;
}

/* ══════════ 表单 ══════════ */
.inline-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.inline-form input {
  flex: 1 1 180px;
  padding: 12px 14px;
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  font-family: var(--mono);
  font-size: .88rem;
  transition: .2s;
}

.inline-form input::placeholder { color: var(--ink-dim); }

.inline-form input:focus {
  outline: none;
  border-color: var(--acc);
  box-shadow: 0 0 0 3px rgba(110,231,183,.1);
}

.btn {
  padding: 12px 26px;
  background: var(--acc);
  color: #07110d;
  border: none;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: .86rem;
  font-weight: 700;
  letter-spacing: .08em;
  cursor: pointer;
  transition: .2s;
}

.btn:hover { filter: brightness(1.12); transform: translateY(-1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ══════════ 主题引擎 ══════════ */
.theme-box {
  border: 1px solid var(--line);
  background: var(--bg2);
  padding: 22px;
}

.theme-presets {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tbtn {
  padding: 7px 16px;
  background: transparent;
  border: 1px solid var(--line2);
  border-radius: var(--radius);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .06em;
  cursor: pointer;
  transition: .2s;
}

.tbtn:hover {
  border-color: var(--acc);
  color: var(--acc);
}

.theme-status {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--acc);
  min-height: 1.4em;
}

/* ══════════ 留言板 ══════════ */
.board {
  border: 1px solid var(--line);
  background: var(--bg2);
  padding: 24px;
}

.board-log {
  max-height: 420px;
  overflow-y: auto;
  margin-bottom: 22px;
  padding-right: 8px;
}

.board-log::-webkit-scrollbar { width: 4px; }
.board-log::-webkit-scrollbar-track { background: transparent; }
.board-log::-webkit-scrollbar-thumb { background: var(--line2); }

.board-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: .88rem;
}

.board-item:last-child { border-bottom: none; }

.board-item .who {
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--acc);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-item .who::after {
  content: " · " attr(data-t);
  color: var(--ink-dim);
}

.board-item .txt {
  color: var(--ink);
  word-break: break-word;
  white-space: pre-wrap;
}

.board-empty {
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--ink-dim);
  padding: 20px 0;
}

.form-error {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: .8rem;
  color: #f87171;
  min-height: 1.3em;
}

/* ══════════ 页脚 ══════════ */
.footer {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 28px 60px;
}

.footer-rule {
  height: 1px;
  background: var(--line);
  margin-bottom: 22px;
}

.footer-row {
  display: flex;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-dim);
}

.footer-row .spacer { flex: 1; }

/* ══════════ 响应式 ══════════ */
@media (max-width: 640px) {
  main { padding: 0 18px; }
  .hero { padding: 96px 0 60px; }
  .hero-name { gap: 12px; }
  .block { padding: 64px 0; }
  .work-item {
    grid-template-columns: 40px 1fr;
    gap: 14px;
  }
  .work-arrow { display: none; }
  .board-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .inline-form { flex-direction: column; }
  .inline-form button { width: 100%; }
  .statusbar { font-size: 10px; padding: 0 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .hero-label, .hero-name, .hero-line, .hero-desc, .hero-meta, .hero-nav { opacity: 1; }
}