:root {
  color-scheme: light dark;
  --bg: #F4F2EC;
  --surface: #FFFFFF;
  --surface-2: #ECE9E0;
  --ink: #17201C;
  --ink-dim: #55605A;
  --border: #D8D4C8;
  --accent: #B5760A;
  --accent-strong: #8F5C06;
  --accent-contrast: #FFFDF7;
  --good: #2E7D4F;
  --bad: #B23A2E;
  --warn: #B5760A;
  --radius-card: 18px;
  --radius-control: 10px;
  --font-ui: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B1512;
    --surface: #12211C;
    --surface-2: #182B24;
    --ink: #EDEFE9;
    --ink-dim: #9DABA3;
    --border: #24382F;
    --accent: #F2A93B;
    --accent-strong: #FFC46B;
    --accent-contrast: #1A1200;
  }
}
:root[data-theme="dark"] {
  --bg: #0B1512;
  --surface: #12211C;
  --surface-2: #182B24;
  --ink: #EDEFE9;
  --ink-dim: #9DABA3;
  --border: #24382F;
  --accent: #F2A93B;
  --accent-strong: #FFC46B;
  --accent-contrast: #1A1200;
}

* { box-sizing: border-box; }

html { scroll-padding-top: env(safe-area-inset-top, 0px); }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.75rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: calc(env(safe-area-inset-top, 0px) + 0.5rem); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  padding-top: calc(env(safe-area-inset-top, 0px) + 1rem);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  background: var(--bg);
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand-mark { width: 34px; height: 34px; color: var(--accent); flex-shrink: 0; }
.app-header h1 { font-size: 1.05rem; margin: 0; letter-spacing: 0.01em; }
.subtitle { margin: 0.1rem 0 0; font-size: 0.85rem; color: var(--ink-dim); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  white-space: nowrap;
}
.status-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--good); }
.status-badge[data-state="working"] .dot { background: var(--warn); }
.status-badge[data-state="error"] .dot { background: var(--bad); }

.layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .rail { display: flex; overflow-x: auto; gap: 0.5rem; padding-bottom: 0.25rem; }
  .rail a { flex: none; }
}

.rail {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  align-self: start;
  position: sticky;
  top: calc(env(safe-area-inset-top, 0px) + 90px);
}
.rail a {
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-control);
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.9rem;
  border: 1px solid transparent;
}
.rail a:hover, .rail a:focus-visible { background: var(--surface-2); color: var(--ink); }

.cards { display: flex; flex-direction: column; gap: 1.25rem; min-width: 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.25rem;
  scroll-margin-top: calc(env(safe-area-inset-top, 0px) + 90px);
}
.card h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.field { margin-bottom: 1rem; }
.field label { display: block; font-size: 0.85rem; color: var(--ink-dim); margin-bottom: 0.35rem; }
.field-inline { display: flex; align-items: center; justify-content: space-between; }
.field-inline label { margin-bottom: 0; }

input[type="text"], input[type="number"], select, textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-control);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  min-height: 44px;
}
textarea { font-family: var(--font-mono); font-size: 0.85rem; min-height: 160px; resize: vertical; }
input:disabled { opacity: 0.6; }
.hidden-field { display: none; margin-top: 0.5rem; }
.hint { font-size: 0.82rem; color: var(--ink-dim); margin: 0.4rem 0 0; line-height: 1.5; }

input[type="checkbox"][role="switch"] {
  appearance: none;
  width: 46px;
  height: 28px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  position: relative;
  cursor: pointer;
  min-height: 0;
  flex-shrink: 0;
}
input[type="checkbox"][role="switch"]::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--ink-dim);
  transition: transform 0.15s ease, background 0.15s ease;
}
input[type="checkbox"][role="switch"]:checked { background: color-mix(in srgb, var(--accent) 25%, var(--surface-2)); }
input[type="checkbox"][role="switch"]:checked::after { transform: translateX(18px); background: var(--accent); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 480px) { .grid-2 { grid-template-columns: 1fr; } }

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--ink);
  padding: 0.7rem 1.1rem;
  border-radius: var(--radius-control);
  font-size: 0.95rem;
  font-family: var(--font-ui);
  min-height: 44px;
  cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); font-weight: 600; }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.btn-ghost { background: transparent; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.75rem; }

.result-box {
  margin-top: 0.75rem;
  padding: 0.85rem;
  border-radius: var(--radius-control);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.88rem;
  line-height: 1.5;
}
.error-list {
  margin-top: 0.75rem;
  padding: 0.85rem;
  border-radius: var(--radius-control);
  background: color-mix(in srgb, var(--bad) 12%, var(--surface));
  border: 1px solid var(--bad);
  font-size: 0.88rem;
}
.error-list ul { margin: 0; padding-left: 1.1rem; }

.kv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem 1.5rem; margin: 0; }
.kv > div { display: flex; justify-content: space-between; gap: 0.5rem; border-bottom: 1px dashed var(--border); padding-bottom: 0.4rem; }
.kv dt { color: var(--ink-dim); font-size: 0.85rem; }
.kv dd { margin: 0; font-family: var(--font-mono); font-size: 0.85rem; text-align: right; word-break: break-all; }
@media (max-width: 480px) { .kv { grid-template-columns: 1fr; } }

.config-pre {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  padding: 0.85rem;
  overflow-x: auto;
  white-space: pre;
  margin-top: 0.6rem;
}

.diag-list { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.diag-list li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.6rem 0.75rem; border-radius: var(--radius-control);
  background: var(--surface-2); border: 1px solid var(--border);
  font-size: 0.9rem;
}
.diag-state { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-dim); }
.diag-state[data-state="pass"] { color: var(--good); }
.diag-state[data-state="fail"] { color: var(--bad); }
.diag-state[data-state="running"] { color: var(--warn); }

.history-list { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.history-list li {
  padding: 0.6rem 0.75rem; border-radius: var(--radius-control);
  background: var(--surface-2); border: 1px solid var(--border);
  font-size: 0.85rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.history-empty { color: var(--ink-dim); font-size: 0.88rem; }

details summary { cursor: pointer; font-size: 0.88rem; color: var(--ink-dim); padding: 0.3rem 0; }

.app-footer {
  text-align: center;
  color: var(--ink-dim);
  font-size: 0.78rem;
  padding: 1.5rem 1rem calc(env(safe-area-inset-bottom, 0px) + 1.5rem);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 1.25rem);
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--bg);
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  z-index: 50;
}