/* ============================================================
   大雁的个人站 — 极简赛博 / 深色 / 单色辉光
   ============================================================ */

:root {
  /* surfaces */
  --bg: #08090c;
  --bg-grain: #0a0b0f;
  --surface: #0f1116;
  --surface-2: #15171f;
  --surface-3: #1c1f29;
  --hairline: rgba(255,255,255,0.06);
  --hairline-strong: rgba(255,255,255,0.10);
  --hairline-bright: rgba(255,255,255,0.16);

  /* text */
  --fg: #ededee;
  --fg-dim: #b8babf;
  --fg-muted: #7c7f8a;
  --fg-faint: #4a4d57;

  /* accents — single primary, used as glow */
  --primary: #8b7cff;
  --primary-glow: rgba(139, 124, 255, 0.55);
  --primary-soft: rgba(139, 124, 255, 0.10);
  --accent: #4dd4e0;       /* secondary, used very sparingly (live dots, focus) */
  --warn: #f8b154;
  --crit: #ff6b8a;
  --good: #5dd49a;

  /* type scale */
  --f-display: "Space Grotesk", "Noto Sans SC", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --f-sans: "Inter", "Noto Sans SC", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  /* radii */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;

  /* timing */
  --t-fast: 120ms;
  --t-base: 220ms;
  --t-slow: 480ms;
}

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

html { background: var(--bg); }
body {
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.55;
  color: var(--fg);
  background:
    radial-gradient(ellipse 1200px 600px at 50% -200px, rgba(139,124,255,0.08), transparent 60%),
    radial-gradient(ellipse 800px 400px at 90% 110%, rgba(77,212,224,0.04), transparent 70%),
    var(--bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* subtle scanline / grain overlay (off by default in motion=off) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.012) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
  opacity: var(--scanlines, 1);
}

/* faint grid */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse 1200px 800px at 50% 30%, #000 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 1200px 800px at 50% 30%, #000 30%, transparent 90%);
  opacity: var(--grid, 0.7);
}

#root {
  position: relative;
  z-index: 2;
}

/* ─── Type ─────────────────────────────────────────────── */
.t-display {
  font-family: var(--f-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.t-mono {
  font-family: var(--f-mono);
  font-feature-settings: "ss01", "ss02";
}
.t-eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.t-eyebrow .dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary-glow);
  margin-right: 8px;
  vertical-align: middle;
  transform: translateY(-1px);
}

/* ─── Layout shell ─────────────────────────────────────── */
.shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 720px) {
  .shell { padding: 0 20px; }
  body { font-size: 14px; }
}

/* ─── Announcement bar ─────────────────────────────────── */
.announce {
  position: relative;
  z-index: 50;
  background: linear-gradient(90deg, rgba(139,124,255,0.10), rgba(77,212,224,0.06) 60%, transparent);
  border-bottom: 1px solid var(--hairline);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--fg-dim);
}
.announce-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 9px 32px;
  max-width: 1240px;
  margin: 0 auto;
  overflow: hidden;
  white-space: nowrap;
}
.announce-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--primary-soft);
  border: 1px solid rgba(139,124,255,0.25);
  color: #c8bfff;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.announce-tag::before {
  content: "";
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 6px var(--primary-glow);
  animation: pulse 1.6s ease-in-out infinite;
}
.announce-text { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.announce-cta {
  color: #fff;
  text-decoration: none;
  border-bottom: 1px dashed rgba(255,255,255,0.4);
  padding-bottom: 1px;
  transition: border-color var(--t-fast);
}
.announce-cta:hover { border-color: #fff; }
.announce-cta::after { content: " →"; }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* ─── Nav ──────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  background: rgba(8,9,12,0.72);
  border-bottom: 1px solid var(--hairline);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  max-width: 1240px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 14px;
  color: var(--fg);
  text-decoration: none;
}
.brand-mark {
  display: block;
  width: 58px;
  height: 58px;
  object-fit: contain;
  filter: drop-shadow(0 0 16px rgba(139, 124, 255, 0.24));
  flex: 0 0 auto;
}
.brand-domain {
  margin-left: 8px;
}
.brand-meta {
  font-size: 10.5px;
  color: var(--fg-faint);
  margin-left: 2px;
  letter-spacing: 0.05em;
}
.brand-meta::before { content: "/ "; color: var(--fg-faint); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 12.5px;
}
.nav-links a {
  color: var(--fg-dim);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color var(--t-fast), background var(--t-fast);
  position: relative;
}
.nav-links a::before {
  content: "[";
  color: var(--fg-faint);
  margin-right: 2px;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.nav-links a::after {
  content: "]";
  color: var(--fg-faint);
  margin-left: 2px;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.nav-links a:hover {
  color: var(--fg);
  background: rgba(255,255,255,0.03);
}
.nav-links a:hover::before, .nav-links a:hover::after { opacity: 1; }

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--fg-muted);
  padding: 6px 10px;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  background: var(--surface);
}
.nav-status .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 6px rgba(93,212,154,0.6);
  animation: pulse 2s ease-in-out infinite;
}

@media (max-width: 820px) {
  .nav-links a { padding: 6px 8px; font-size: 12px; }
  .brand-meta { display: none; }
}
@media (max-width: 600px) {
  .nav-status { display: none; }
}

/* ─── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: var(--r-md);
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--t-fast);
  text-decoration: none;
  white-space: nowrap;
  background: transparent;
  color: var(--fg);
}
.btn-primary {
  background: var(--primary);
  color: #0a0a14;
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(139,124,255,0.3), 0 8px 24px -8px var(--primary-glow);
}
.btn-primary:hover {
  background: #a092ff;
  box-shadow: 0 0 0 1px rgba(139,124,255,0.4), 0 10px 30px -6px var(--primary-glow);
  transform: translateY(-1px);
}
.btn-ghost {
  background: var(--surface);
  border-color: var(--hairline-strong);
  color: var(--fg-dim);
}
.btn-ghost:hover {
  border-color: var(--hairline-bright);
  color: var(--fg);
  background: var(--surface-2);
}
.btn-link {
  padding: 0;
  background: transparent;
  color: var(--fg-dim);
}
.btn-link:hover { color: var(--fg); }
.btn .arrow {
  display: inline-block;
  transition: transform var(--t-fast);
}
.btn:hover .arrow { transform: translateX(3px); }

/* ─── Section frame ────────────────────────────────────── */
.section {
  position: relative;
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}
.section:first-of-type { border-top: none; }
.section-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  margin-bottom: 48px;
}
.section-title {
  font-family: var(--f-display);
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin: 8px 0 0;
  color: var(--fg);
}
.section-title .accent {
  color: var(--primary);
}
.section-sub {
  color: var(--fg-muted);
  font-size: 14px;
  max-width: 520px;
  margin-top: 10px;
  font-family: var(--f-mono);
}
.section-meta {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--fg-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: right;
}
.section-meta div + div { margin-top: 4px; }

@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 28px; }
  .section-head { grid-template-columns: 1fr; }
  .section-meta { text-align: left; }
}

/* ─── Cards ────────────────────────────────────────────── */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  transition: border-color var(--t-base), background var(--t-base), transform var(--t-base);
}
.card:hover {
  border-color: var(--hairline-bright);
  background: var(--surface-2);
}

/* ─── Form fields ──────────────────────────────────────── */
.field {
  width: 100%;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  color: var(--fg);
  font-family: var(--f-sans);
  font-size: 14px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.field::placeholder { color: var(--fg-faint); }
.field:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--surface-2);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

/* ─── Chips / badges ───────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--fg-dim);
  border: 1px solid var(--hairline);
}
.chip-live { color: var(--good); border-color: rgba(93,212,154,0.25); background: rgba(93,212,154,0.06); }
.chip-wip  { color: var(--warn); border-color: rgba(248,177,84,0.25); background: rgba(248,177,84,0.06); }
.chip-archived { color: var(--fg-faint); }

/* ─── Footer ───────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--hairline);
  padding: 56px 0 40px;
  margin-top: 24px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--fg-muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer h5 {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin: 0 0 14px;
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 8px; }
.footer a { color: var(--fg-dim); text-decoration: none; transition: color var(--t-fast); }
.footer a:hover { color: var(--fg); }
.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--fg-faint);
  font-size: 11px;
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ─── Misc utilities ───────────────────────────────────── */
.glow-text {
  text-shadow: 0 0 24px var(--primary-glow);
}
.cursor-blink::after {
  content: "▌";
  display: inline-block;
  margin-left: 2px;
  color: var(--primary);
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hr-corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--hairline-bright);
  border-style: solid;
  border-width: 0;
  pointer-events: none;
}
.hr-corner.tl { top: -1px; left: -1px; border-top-width: 1px; border-left-width: 1px; }
.hr-corner.tr { top: -1px; right: -1px; border-top-width: 1px; border-right-width: 1px; }
.hr-corner.bl { bottom: -1px; left: -1px; border-bottom-width: 1px; border-left-width: 1px; }
.hr-corner.br { bottom: -1px; right: -1px; border-bottom-width: 1px; border-right-width: 1px; }