/* ============================================================
   MergeSE - modern dark UI
   ============================================================ */

:root {
  --bg:           #0b1020;
  --bg-soft:      #11172d;
  --bg-card:      rgba(255,255,255,0.04);
  --line:         rgba(255,255,255,0.08);
  --line-strong:  rgba(255,255,255,0.18);
  --text:         #e6e9f5;
  --muted:        #9aa3bf;
  --primary:      #7c5cff;
  --primary-2:    #22d3ee;
  --ok:           #34d399;
  --warn:         #fbbf24;
  --err:          #f87171;
  --code-bg:      #0a0f1f;
  --shadow:       0 12px 40px rgba(0,0,0,0.45);
  --radius:       14px;
  --radius-sm:    10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124,92,255,0.18), transparent 70%),
    radial-gradient(800px 500px at -10% 30%, rgba(34,211,238,0.12), transparent 70%),
    var(--bg);
  min-height: 100vh;
  line-height: 1.55;
}

a { color: var(--primary-2); text-decoration: none; }
a:hover { text-decoration: underline; }

code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em;
       background: rgba(255,255,255,0.06); padding: 1px 6px; border-radius: 5px; }

/* ----------------------- Topbar ----------------------- */

.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  backdrop-filter: blur(18px);
  background: rgba(11,16,32,0.7);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { width: 36px; height: 36px; }
.brand .title { font-weight: 700; letter-spacing: 0.3px; font-size: 17px; }
.brand .subtitle { font-size: 11.5px; color: var(--muted); margin-top: -2px; }

.topbar nav { display: flex; gap: 18px; align-items: center; }
.topbar nav a {
  font-size: 13.5px; color: var(--muted);
  padding: 6px 0; border-bottom: 1px solid transparent;
  transition: color .15s, border-color .15s;
}
.topbar nav a:hover { color: var(--text); border-bottom-color: var(--primary); text-decoration: none; }
.topbar nav a.gh-link {
  border: 1px solid var(--line-strong);
  border-radius: 999px; padding: 6px 12px; color: var(--text);
}
.topbar nav a.gh-link:hover { background: rgba(255,255,255,0.06); }

.topbar nav a.running-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px; border-radius: 999px;
  background: rgba(124,92,255,0.18);
  border: 1px solid rgba(124,92,255,0.45);
  color: var(--primary-2); font-weight: 600; font-size: 12.5px;
}
.topbar nav a.running-pill:hover {
  background: rgba(124,92,255,0.28); border-color: var(--primary);
  text-decoration: none;
}
.spin {
  width: 10px; height: 10px; border-radius: 50%;
  border: 2px solid rgba(124,92,255,0.4); border-top-color: var(--primary-2);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ----------------------- Layout ----------------------- */

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 36px 28px 80px;
  display: flex; flex-direction: column; gap: 28px;
}

footer {
  color: var(--muted); font-size: 12.5px;
  text-align: center; padding: 24px 0 0;
  border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 4px;
}

/* ----------------------- Hero ----------------------- */

.hero {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px;
  align-items: center;
  padding: 28px 4px 12px;
}
.hero h1 {
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.12; margin: 0 0 12px;
  letter-spacing: -0.4px;
}
.hero .grad {
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { color: var(--muted); font-size: 16px; margin: 0 0 22px; }
.hero-cta { display: flex; gap: 12px; margin-bottom: 18px; }

.status-line {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--muted);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.r { background: #ef4444; }
.dot.y { background: #f59e0b; }
.dot.g { background: #10b981; }
.dot.pulse { background: var(--ok); box-shadow: 0 0 0 0 rgba(52,211,153,.6);
             animation: pulse 1.8s infinite; }
.status-line.bad .dot.pulse { background: var(--err); animation: none; box-shadow:none; }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(52,211,153,0.55); }
  70%  { box-shadow: 0 0 0 10px rgba(52,211,153,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}

.hero-card { display: flex; justify-content: flex-end; }
.codecard {
  width: 100%;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.codecard-head {
  display: flex; align-items: center; gap: 7px;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
}
.codecard-head .cc-title { margin-left: auto; color: var(--muted); font-size: 12px; }
.codecard pre {
  margin: 0; padding: 16px 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px; line-height: 1.55;
  color: #cdd6f4; overflow-x: auto;
}
.codecard .prompt { color: var(--primary-2); }
.codecard .arg    { color: #c4b5fd; }
.codecard .ok     { color: var(--ok); }
.codecard .num    { color: #fde68a; }
.codecard .muted  { color: var(--muted); }

/* ----------------------- Cards ----------------------- */

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px 26px;
  backdrop-filter: blur(8px);
  scroll-margin-top: 80px;
}
.card-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 24px;
  margin-bottom: 16px;
}
.card-head h2 { margin: 0 0 4px; font-size: 19px; letter-spacing: -0.2px; }
.card-head p  { margin: 0; color: var(--muted); font-size: 13.5px; max-width: 760px; }

.step-badge {
  font-size: 11px; font-weight: 600;
  padding: 4px 10px; border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  color: #0b1020; letter-spacing: 0.6px; text-transform: uppercase;
}

/* ----------------------- Forms ----------------------- */

.grid {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px 18px;
}
.grid label {
  display: flex; flex-direction: column; gap: 6px;
  font-size: 12.5px; color: var(--muted);
}
.grid label.full { grid-column: 1 / -1; }
.grid input, .grid select, .grid textarea {
  background: rgba(0,0,0,0.25);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 9px 12px;
  font-family: inherit;
  font-size: 13.5px;
  transition: border-color .15s, box-shadow .15s;
}
.grid textarea {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px; line-height: 1.55; resize: vertical;
}
.grid input:focus, .grid select:focus, .grid textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(124,92,255,0.25);
}

.actions {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  grid-column: 1 / -1;
  margin-top: 6px;
}
.actions.inline { grid-column: auto; margin: 0; }
.actions .hint { color: var(--muted); font-size: 12.5px; }
.hint-inline { color: var(--muted); font-size: 11.5px; margin-top: -2px; }

/* ----------------------- Model picker ----------------------- */

.field-label {
  font-size: 12.5px; color: var(--muted); margin-bottom: 8px;
  display: flex; gap: 10px; align-items: baseline;
}
.field-label .dim { color: rgba(154,163,191,0.6); font-size: 11.5px; }

.model-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 10px; }

.model-entry {
  display: grid; grid-template-columns: 130px 1fr auto;
  gap: 10px; align-items: center;
  background: rgba(0,0,0,0.22);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}
.model-entry select.kind,
.model-entry input.value,
.model-entry select.value {
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--line);
  border-radius: 8px; color: var(--text);
  padding: 7px 10px; font-size: 13px; font-family: inherit;
}
.model-entry select.kind { font-weight: 600; }
.model-entry input.value:focus,
.model-entry select.value:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(124,92,255,0.25);
}
.model-entry .remove {
  background: transparent; color: var(--muted);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 10px; cursor: pointer; font-size: 12px;
}
.model-entry .remove:hover { color: var(--err); border-color: var(--err); }

.model-entry .upload-zone {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--muted);
}
.model-entry .upload-zone .uploaded {
  color: var(--ok); font-weight: 600;
}
.model-entry input[type="file"] { display: none; }
.model-entry .file-btn {
  background: rgba(124,92,255,0.15); color: var(--primary-2);
  border: 1px dashed var(--primary); border-radius: 8px;
  padding: 6px 12px; cursor: pointer; font-size: 12.5px;
  transition: background .15s;
}
.model-entry .file-btn:hover { background: rgba(124,92,255,0.25); }
.model-entry .progress {
  width: 120px; height: 4px; background: rgba(255,255,255,0.08);
  border-radius: 2px; overflow: hidden;
}
.model-entry .progress > div {
  height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-2));
  width: 0%; transition: width .15s;
}

.btn-sm { padding: 6px 12px; font-size: 12.5px; }

@media (max-width: 700px) {
  .model-entry { grid-template-columns: 1fr; }
  .model-entry .remove { justify-self: end; }
}

/* ----------------------- Checkpoint library ----------------------- */

.upload-card { margin-bottom: 18px; }
.dropzone {
  display: block; cursor: pointer;
  border: 1.5px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 22px 18px; text-align: center;
  background: rgba(0,0,0,0.15);
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--primary);
  background: rgba(124,92,255,0.07);
}
.dropzone .dz-title { font-weight: 600; font-size: 14px; color: var(--text); }
.dropzone .dz-sub   { font-size: 12.5px; color: var(--muted); margin-top: 5px; }
.lib-progress { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.lib-progress .bar { height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.lib-progress .bar > div {
  height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-2));
  width: 0%; transition: width .15s;
}
.muted-tiny { color: var(--muted); font-size: 11.5px; }

.lib-groups {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.lib-group { background: rgba(0,0,0,0.18); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 12px 14px; }
.lib-group-head {
  font-size: 12px; font-weight: 600; letter-spacing: 0.4px;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 8px;
}
.lib-group-head .dim { color: rgba(154,163,191,0.55); font-weight: 500; }
.lib-items {
  display: flex; flex-direction: column; gap: 6px;
  /* Keep long lists (e.g. many server-mounted checkpoints) from taking over the
     page: cap the height and scroll within the group. */
  max-height: 240px; overflow-y: auto;
  padding-right: 4px;
}
.lib-items::-webkit-scrollbar { width: 8px; }
.lib-items::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 8px; }
.lib-items::-webkit-scrollbar-track { background: transparent; }

/* Library search box */
.lib-search { position: relative; margin-bottom: 12px; }
.lib-search input {
  width: 100%; box-sizing: border-box;
  padding: 9px 12px 9px 34px;
  background: var(--code-bg); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 13px; outline: none; transition: border-color .12s;
}
.lib-search input:focus { border-color: var(--primary); }
.lib-search input::placeholder { color: var(--muted); }
.lib-search .lib-search-icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--muted); pointer-events: none;
}
.lib-nomatch { color: var(--muted); font-size: 12px; padding: 6px 4px; font-style: italic; }
.lib-item {
  display: grid; grid-template-columns: 1fr auto auto;
  gap: 8px; align-items: center;
  padding: 8px 10px;
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--line);
  border-radius: 8px; font-size: 12.5px;
}
.lib-item:hover { background: rgba(255,255,255,0.05); }
.lib-item .label { font-weight: 600; color: var(--text); }
.lib-item .meta  { color: var(--muted); font-size: 11px; font-family: ui-monospace, Menlo, monospace; }
.lib-item .actions { display: flex; gap: 4px; }
.lib-item .iconbtn {
  background: transparent; border: 1px solid var(--line);
  border-radius: 6px; color: var(--muted);
  cursor: pointer; padding: 4px 8px; font-size: 11px;
  transition: color .12s, border-color .12s;
}
.lib-item .iconbtn:hover { color: var(--text); border-color: var(--primary); }
.lib-item .iconbtn.danger:hover { color: var(--err); border-color: var(--err); }
.lib-empty { color: var(--muted); font-size: 12px; padding: 6px 4px; }

.lib-divider {
  display: flex; align-items: center; gap: 14px;
  margin: 22px 0 12px;
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.6px;
}
.lib-divider::before, .lib-divider::after {
  content: ""; flex: 1; height: 1px; background: var(--line);
}
.file-btn.small {
  background: rgba(124,92,255,0.12); color: var(--primary-2);
  border: 1px solid rgba(124,92,255,0.4); border-radius: 6px;
  padding: 4px 10px; font-size: 11.5px; cursor: pointer;
  text-transform: none; letter-spacing: 0; font-weight: 600;
}
.file-btn.small:hover { background: rgba(124,92,255,0.22); }

/* ----------------------- Download button in job detail ----------------------- */

.job-detail .meta .download-btn {
  margin-left: auto;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  color: #0b1020; border: none;
  padding: 6px 12px; font-size: 12.5px; font-weight: 600;
  border-radius: 8px; cursor: pointer;
}
.job-detail .meta .download-btn:hover { filter: brightness(1.07); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: 10px;
  font-size: 13.5px; font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer; transition: transform .05s, background .15s, border-color .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  color: #0b1020; border-color: transparent;
}
.btn-primary:hover { filter: brightness(1.07); }
.btn-ghost {
  background: transparent; color: var(--text); border-color: var(--line-strong);
}
.btn-ghost:hover { background: rgba(255,255,255,0.05); border-color: var(--primary); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* ----------------------- Jobs ----------------------- */

.jobs-layout {
  display: grid; grid-template-columns: minmax(260px, 320px) 1fr;
  gap: 16px;
}
.job-list {
  list-style: none; padding: 0; margin: 0;
  max-height: 520px; overflow-y: auto;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.18);
}
.job-list li {
  padding: 10px 12px; border-bottom: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 4px; cursor: pointer;
  transition: background .12s;
}
.job-list li:hover { background: rgba(255,255,255,0.04); }
.job-list li.active { background: rgba(124,92,255,0.16); }
.job-list .row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.job-list .jkind { font-weight: 600; font-size: 13px; }
.job-list .jid   { color: var(--muted); font-size: 11.5px; font-family: ui-monospace, Menlo, monospace; }
.job-list .jtime { color: var(--muted); font-size: 11px; }

.badge {
  font-size: 10.5px; font-weight: 700; letter-spacing: .5px;
  padding: 2px 8px; border-radius: 999px; text-transform: uppercase;
}
.b-running  { background: rgba(34,211,238,0.15); color: var(--primary-2); }
.b-done     { background: rgba(52,211,153,0.18); color: var(--ok); }
.b-error    { background: rgba(248,113,113,0.18); color: var(--err); }
.b-cancelled{ background: rgba(156,163,175,0.18); color: var(--muted); }
.b-pending  { background: rgba(251,191,36,0.18); color: var(--warn); }

.job-detail {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--code-bg);
  min-height: 320px;
  display: flex; flex-direction: column;
}
.job-detail .empty {
  color: var(--muted); margin: auto;
}
.job-detail .meta {
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  display: flex; gap: 14px; flex-wrap: wrap; align-items: center;
  font-size: 12.5px;
}
.job-detail .meta strong { color: var(--text); }
.job-detail .meta .muted { color: var(--muted); }
.job-detail pre.log {
  margin: 0; padding: 14px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px; line-height: 1.5;
  color: #cdd6f4;
  overflow-y: auto; height: 380px;
  white-space: pre-wrap; word-break: break-word;
}
.job-detail .result {
  padding: 12px 16px; border-top: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  font-size: 12.5px;
}
.job-detail .result table { width: 100%; border-collapse: collapse; }
.job-detail .result td { padding: 4px 8px; border-top: 1px solid var(--line); }
.job-detail .result td.k { color: var(--muted); width: 220px; }

/* ----------------------- Docs ----------------------- */

.docs-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 22px;
  margin-bottom: 18px;
}
.docs-grid h3 { margin: 0 0 6px; font-size: 15px; }
.docs-grid p  { margin: 0; color: var(--muted); font-size: 13.5px; }

.snippet {
  margin: 0; padding: 16px 18px;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  color: #cdd6f4;
  overflow-x: auto;
}

/* ----------------------- Toast ----------------------- */

.toast {
  position: fixed; right: 24px; bottom: 24px;
  background: var(--bg-soft);
  border: 1px solid var(--line-strong);
  padding: 12px 16px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  font-size: 13px;
  max-width: 340px;
  z-index: 100;
}
.toast.err { border-color: rgba(248,113,113,0.5); }
.toast.ok  { border-color: rgba(52,211,153,0.5); }

/* ----------------------- Responsive ----------------------- */

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr 1fr; }
  .jobs-layout { grid-template-columns: 1fr; }
  .docs-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .topbar nav a:not(.gh-link) { display: none; }
  .grid { grid-template-columns: 1fr; }
}

/* ---------------------- Auth gate ---------------------- */
.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(8, 10, 20, 0.82);
  backdrop-filter: blur(4px);
}
/* The `hidden` attribute must win over the display above, or the overlay never
   goes away after the challenge is passed. */
.auth-gate[hidden] { display: none; }
.auth-card {
  width: 100%;
  max-width: 420px;
  background: #12151f;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 28px 26px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  text-align: center;
}
.auth-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 8px; }
.auth-sub { color: #9aa4b2; font-size: 0.9rem; line-height: 1.5; margin-bottom: 18px; }
#turnstileBox { display: flex; justify-content: center; min-height: 65px; }
.auth-msg { color: #f0a; font-size: 0.85rem; min-height: 1.2em; margin-top: 10px; }
.auth-key { margin-top: 18px; text-align: left; }
.auth-key summary { cursor: pointer; color: #9aa4b2; font-size: 0.85rem; }
.auth-key-row { display: flex; gap: 8px; margin-top: 10px; }
.auth-key-row input {
  flex: 1; padding: 8px 10px; border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12); background: #0c0e16; color: #e6e9ef;
}