:root {
  --bg: #17120e;
  --bg-deep: #0f0c09;
  --metal-hi: #4a423a;
  --metal: #352f29;
  --metal-lo: #241f1b;
  --edge-light: #6b6054;
  --edge-dark: #0b0907;
  --text: #e6dac4;
  --text-dim: #a89b85;
  --rust: #b5541c;
  --rust-hi: #d2691f;
  --rust-lo: #7e3a12;
  --rad: #a6d636;
  --rad-dim: #5f7d1c;
  --danger: #e2563a;
  --danger-bg: #3a1610;
  --font-cjk: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --maxw: 1080px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(rgba(23,18,14,.78), rgba(23,18,14,.78)), url("/static/img/corrugated.webp") repeat, var(--bg);
  color: var(--text);
  font-family: var(--font-cjk);
  line-height: 1.7;
  overflow-x: hidden;
}
main { flex: 1; }
img { max-width: 100%; height: auto; }
a { color: var(--rad); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 520px; padding-top: 48px; padding-bottom: 48px; }

.stencil {
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-shadow: 0 2px 0 var(--edge-dark);
}

/* header */
.site-header {
  background: linear-gradient(var(--metal-hi), var(--metal-lo));
  border-bottom: 3px solid var(--edge-dark);
  box-shadow: 0 1px 0 var(--edge-light) inset, 0 4px 14px rgba(0,0,0,.6);
  position: relative;
  z-index: 2;
}
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 900; letter-spacing: .08em; min-width: 0; }
.brand span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav { display: flex; gap: 4px; }
.nav a, .nav button {
  color: var(--text);
  text-decoration: none;
  padding: 8px 12px;
  font-weight: 700;
  border-bottom: 3px solid transparent;
}
.nav a:hover, .nav button:hover { color: var(--rad); border-bottom-color: var(--rad-dim); }
/* the logout link is a POST form (CSRF-protected); its button looks like the links */
.nav-form { display: flex; margin: 0; }
.nav button { font: inherit; font-weight: 700; background: none; border-top: 0; border-left: 0; border-right: 0; cursor: pointer; }

/* hero */
.hero {
  position: relative;
  background:
    linear-gradient(rgba(15,12,9,.55), rgba(23,18,14,.95)),
    radial-gradient(ellipse at 50% 30%, rgba(166,214,54,.12), transparent 60%),
    url("/static/img/hero-dam.webp") center / cover;
  border-bottom: 3px solid var(--edge-dark);
  box-shadow: 0 2px 0 var(--rad-dim);
}
.hero-inner { text-align: center; padding-top: 36px; padding-bottom: 48px; }
.hero-logo { width: 170px; filter: drop-shadow(0 6px 14px rgba(0,0,0,.8)); }
.hero h1 { font-size: clamp(2rem, 7vw, 3.6rem); margin: 12px 0 8px; color: #f1e6cf; }
.lead { max-width: 36em; margin: 0 auto 24px; font-size: 1.1rem; color: var(--text); text-shadow: 0 1px 6px #000; }
.actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 0; }

/* buttons */
.btn {
  display: inline-block;
  padding: 11px 28px;
  color: var(--text);
  font: inherit;
  font-weight: 800;
  letter-spacing: .1em;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  background: linear-gradient(var(--metal-hi), var(--metal-lo));
  border: 2px solid var(--edge-dark);
  border-radius: 3px;
  box-shadow: 0 1px 0 var(--edge-light) inset, 0 3px 0 var(--edge-dark);
  transition: filter .12s;
}
.btn:hover { filter: brightness(1.2); }
.btn:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--edge-light) inset, 0 0 0 var(--edge-dark); filter: brightness(.9); }
.btn-primary { background: linear-gradient(var(--rust-hi), var(--rust-lo)); color: #fff; text-shadow: 0 1px 0 rgba(0,0,0,.5); box-shadow: 0 1px 0 rgba(255,200,150,.4) inset, 0 3px 0 var(--edge-dark); }
a:focus-visible, .btn:focus-visible, input:focus-visible, button:focus-visible {
  outline: 3px solid var(--rad);
  outline-offset: 2px;
}

/* metal panel with rivets */
.panel {
  position: relative;
  padding: 24px 24px 22px;
  background:
    radial-gradient(circle at 12px 12px, var(--edge-light) 0 2px, var(--edge-dark) 3px, transparent 4px),
    radial-gradient(circle at calc(100% - 12px) 12px, var(--edge-light) 0 2px, var(--edge-dark) 3px, transparent 4px),
    radial-gradient(circle at 12px calc(100% - 12px), var(--edge-light) 0 2px, var(--edge-dark) 3px, transparent 4px),
    radial-gradient(circle at calc(100% - 12px) calc(100% - 12px), var(--edge-light) 0 2px, var(--edge-dark) 3px, transparent 4px),
    linear-gradient(160deg, rgba(74,66,58,.88), rgba(36,31,27,.94)),
    url("/static/img/scratched-metal.webp") center / cover;
  border: 2px solid var(--edge-dark);
  border-radius: 4px;
  box-shadow: 0 1px 0 var(--edge-light) inset, 0 8px 20px rgba(0,0,0,.55);
}
.panel h1, .panel h2 { margin: 0 0 8px; font-size: 1.3rem; color: var(--rust-hi); }
.panel p { margin: 0 0 12px; color: var(--text); }
.panel p:last-child { margin-bottom: 0; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; padding-top: 40px; padding-bottom: 48px; }
.error-panel { text-align: center; }

/* forms (Tasks 3-4) */
.form label { display: block; margin: 14px 0 6px; font-weight: 700; color: var(--text-dim); letter-spacing: .05em; }
.form input[type=text], .form input[type=email], .form input[type=password] {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: var(--bg-deep);
  border: 2px solid var(--edge-dark);
  border-radius: 3px;
  box-shadow: 0 2px 6px rgba(0,0,0,.7) inset, 0 1px 0 var(--edge-light);
}
.form input:focus { outline: none; border-color: var(--rad); box-shadow: 0 0 0 3px rgba(166,214,54,.35), 0 2px 6px rgba(0,0,0,.7) inset; }
.form .btn { margin-top: 20px; width: 100%; }
.msg-error { margin: 0 0 14px; padding: 10px 14px; background: var(--danger-bg); color: #ffb4a3; border: 1px solid var(--danger); border-left: 6px solid var(--danger); border-radius: 3px; }
.captcha-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.captcha-row img { display: block; background: #fff; border: 2px solid var(--edge-dark); border-radius: 3px; }
.captcha-row input { flex: 1 1 120px; min-width: 0; }
.done-email { font-weight: 700; color: var(--rad); word-break: break-all; }
.form .hint { margin: 6px 0 0; font-size: .9rem; color: var(--text-dim); }

/* footer */
.site-footer {
  margin-top: auto;
  padding: 22px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: .9rem;
  background: linear-gradient(var(--metal-lo), var(--bg-deep));
  border-top: 3px solid var(--edge-dark);
  box-shadow: 0 1px 0 var(--edge-light) inset;
}
.site-footer p { margin: 2px 0; }
.hazard { color: var(--rad); font-weight: 700; letter-spacing: .06em; }
.hazard img { vertical-align: -4px; }

@media (max-width: 760px) {
  .features { grid-template-columns: 1fr; }
  .hero-inner { padding-top: 36px; padding-bottom: 48px; }
  .hero-logo { width: 150px; }
}
@media (max-width: 400px) {
  .brand span { display: none; }
  .nav a, .nav button { padding: 8px 10px; }
}
/* main button first in the HTML (Enter submits it), the captcha refresh shown above it */
.form-actions { display: flex; flex-direction: column; align-items: flex-start; }
.form-actions .btn-link { order: -1; margin-top: 6px; }
.btn-link { padding: 0; font: inherit; font-size: .9rem; color: var(--rad); text-decoration: underline; background: none; border: 0; cursor: pointer; }

/* login / account (Task 4) */
.narrow .panel + .panel { margin-top: 20px; }
.panel .form-foot { margin-top: 18px; color: var(--text-dim); }
.msg-ok { margin: 0 0 14px; padding: 10px 14px; background: rgba(95,125,28,.25); color: #d4f08a; border: 1px solid var(--rad-dim); border-left: 6px solid var(--rad); border-radius: 3px; }
.facts { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 10px 16px; margin: 12px 0 0; }
.facts dt { font-weight: 700; color: var(--text-dim); letter-spacing: .05em; }
.facts dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.facts .reals { font-weight: 900; font-size: 1.2rem; color: var(--rust-hi); }
.btn-wide { width: 100%; }
@media (max-width: 400px) {
  .facts { grid-template-columns: 1fr; gap: 2px; }
  .facts dd { margin-bottom: 8px; }
}

/* feedback board */
.form select, .form textarea {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: var(--bg-deep);
  border: 2px solid var(--edge-dark);
  border-radius: 3px;
  box-shadow: 0 2px 6px rgba(0,0,0,.7) inset, 0 1px 0 var(--edge-light);
}
.form textarea { resize: vertical; min-height: 8em; }
.form select:focus, .form textarea:focus { outline: none; border-color: var(--rad); box-shadow: 0 0 0 3px rgba(166,214,54,.35), 0 2px 6px rgba(0,0,0,.7) inset; }
.actions-left { display: flex; gap: 12px; flex-wrap: wrap; }
.panel .hint { color: var(--text-dim); font-size: .9rem; }
.fb-list { list-style: none; margin: 8px 0 12px; padding: 0; }
.fb-list li { padding: 10px 0; border-bottom: 1px solid var(--edge-dark); box-shadow: 0 1px 0 rgba(107,96,84,.35); }
.fb-list li:last-child { border-bottom: 0; box-shadow: none; }
.fb-title { display: block; font-weight: 700; overflow-wrap: anywhere; }
.fb-meta { display: block; font-size: .9rem; color: var(--text-dim); overflow-wrap: anywhere; }
.fb-heading { overflow-wrap: anywhere; text-transform: none; letter-spacing: .04em; }
.fb-text { margin-top: 16px; padding: 12px 14px; white-space: pre-wrap; overflow-wrap: anywhere; background: rgba(15,12,9,.6); border: 1px solid var(--edge-dark); border-radius: 3px; }
.fb-reply { margin-top: 0; border-left: 6px solid var(--rad); }
.tag { display: inline-block; padding: 0 8px; font-size: .85rem; font-weight: 700; border-radius: 3px; border: 1px solid var(--edge-dark); }
.tag-open { background: var(--rust-lo); color: #fff; }
.tag-replied { background: var(--rad-dim); color: #fff; }
.tag-closed { background: var(--metal-lo); color: var(--text-dim); }
.fb-filters { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 4px 0 8px; }
.fb-filters a { font-weight: 700; text-decoration: none; }
.fb-filters a[aria-current] { color: var(--text); border-bottom: 3px solid var(--rust-hi); }
@media (max-width: 400px) {
  .nav { gap: 0; }
  .nav a, .nav button { padding: 8px 6px; }
}
.fb-shots-title { margin-top: 16px; font-size: 1.1rem; }
.fb-shots { list-style: none; margin: 8px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.fb-shots li { max-width: 100%; }
.fb-shots a { display: inline-block; vertical-align: top; border: 1px solid var(--edge-dark); border-radius: 3px; background: rgba(15,12,9,.6); padding: 4px; }
.fb-shots img { display: block; max-width: 240px; max-height: 180px; height: auto; }
.form input[type=file] { max-width: 100%; }

/* beginner guide */
.guide { padding-top: 28px; padding-bottom: 48px; }
.guide .panel { margin-top: 20px; }
.guide-toc { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 14px 0 6px; }
.guide-toc a { color: var(--rad); text-decoration: none; border-bottom: 1px dashed var(--rad-dim); }
.guide-sec { scroll-margin-top: 80px; }
.table-scroll { overflow-x: auto; margin: 6px 0 14px; }
.guide-table { border-collapse: collapse; width: 100%; font-size: .95rem; }
.guide-table th, .guide-table td { padding: 6px 10px; border-bottom: 1px solid var(--edge-dark); text-align: left; vertical-align: top; }
.guide-table th { color: var(--text-dim); white-space: nowrap; }
.nav { flex-wrap: wrap; }
.nav a { white-space: nowrap; }
.guide-table td:first-child { white-space: nowrap; }

/* character, auction and ranking pages */
.nav { flex-wrap: wrap; justify-content: flex-end; }
.filter select, .filter input[type=text] { max-width: 100%; }
.pager { display: flex; gap: 20px; margin-top: 12px; }
.pager a, .guide-toc a[aria-current] { color: var(--rad); }
.guide-toc a[aria-current] { font-weight: 900; border-bottom-style: solid; }

.maint-banner { background: #5a3a05; color: #ffd98a; border-bottom: 2px solid #b8860b; padding: 10px 0; text-align: center; }
.announce-text { white-space: pre-line; }
.announcement { padding-top: 32px; }
/* Website auction trade forms: label, field and button on one wrapping line. */
.trade-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: 8px 0; }
.trade-row label { margin: 0; }
.trade-row input[type=text] { width: 9em; max-width: 100%; }
.trade-row .btn, .form.trade-row .btn { margin-top: 0; width: auto; }