:root{
  /* Light (default) */
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --shadow: 0 1px 2px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.06);
  --primary: #2563eb;
  --primaryText: #ffffff;
  --danger: #b91c1c;
  --focus: #2563eb;
  --codeBg: #f1f5f9;
  --track: #e2e8f0;
  --bar: #2563eb;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg: #0b0f14;
    --panel: #0f172a;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --border: #1f2937;
    --shadow: 0 1px 2px rgba(0,0,0,.25), 0 18px 42px rgba(0,0,0,.30);
    --primary: #60a5fa;
    --primaryText: #0b1220;
    --danger: #f87171;
    --focus: #93c5fd;
    --codeBg: #0b1220;
    --track: #0b1220;
    --bar: #22c55e;
  }
}

/* Overrides when user forces a theme */
:root[data-theme="light"]{
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --shadow: 0 1px 2px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.06);
  --primary: #2563eb;
  --primaryText: #ffffff;
  --danger: #b91c1c;
  --focus: #2563eb;
  --codeBg: #f1f5f9;
  --track: #e2e8f0;
  --bar: #2563eb;
}

:root[data-theme="dark"]{
  --bg: #0b0f14;
  --panel: #0f172a;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --border: #1f2937;
  --shadow: 0 1px 2px rgba(0,0,0,.25), 0 18px 42px rgba(0,0,0,.30);
  --primary: #60a5fa;
  --primaryText: #0b1220;
  --danger: #f87171;
  --focus: #93c5fd;
  --codeBg: #0b1220;
  --track: #0b1220;
  --bar: #22c55e;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.35;
}

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

code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: var(--codeBg);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 8px;
}

.muted{ color: var(--muted); }
.small{ font-size: 12px; }

.topbar{
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 5;
}

.topbar-inner{
  max-width: 980px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.topbar-actions{
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-title{ font-weight: 700; letter-spacing: .2px; }
.brand-sub{ font-size: 12px; color: var(--muted); margin-top: 2px; }

.container{
  max-width: 980px;
  margin: 0 auto;
  padding: 18px 16px 40px;
}

.layout{
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 14px;
}
@media (max-width: 880px){
  .layout{ grid-template-columns: 1fr; }
}

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 16px;
}

.card-h{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

h1{
  font-size: 16px;
  margin: 0;
  font-weight: 700;
}

.hint{ font-size: 12px; color: var(--muted); }

.formgrid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 620px){
  .formgrid{ grid-template-columns: 1fr; }
}

.field span{
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.field input{
  width: 100%;
  padding: 10px 11px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 80%, var(--bg));
  color: var(--text);
}

.field input:focus{
  outline: 2px solid color-mix(in srgb, var(--focus) 75%, transparent);
  outline-offset: 2px;
}

.field small{
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.switchrow{
  display: flex;
  align-items: center;
  gap: 10px;
}

.switchrow input[type="checkbox"]{
  width: 18px;
  height: 18px;
  margin: 0;
}

.actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.btn{
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 650;
  cursor: pointer;
}

.btn.primary{
  background: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 70%, var(--border));
  color: var(--primaryText);
}

.btn.danger{
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border));
  color: var(--danger);
}

.btn:disabled{
  opacity: .55;
  cursor: not-allowed;
}

.btn:focus{
  outline: 2px solid color-mix(in srgb, var(--focus) 75%, transparent);
  outline-offset: 2px;
}

.iconbtn{
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 650;
  font-size: 12px;
}

.progress{ margin-top: 14px; }
.progress-track{
  height: 10px;
  background: var(--track);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar{
  height: 100%;
  width: 0%;
  background: var(--bar);
}
.progress-meta{
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  font-size: 12px;
}

.result{
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 12px;
  background: color-mix(in srgb, var(--panel) 88%, var(--bg));
}

.rowline{
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 8px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}
.rowline:last-child{ border-bottom: 0; }

.copybtn{
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 650;
  font-size: 12px;
}

.notice{
  border-radius: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 75%, var(--bg));
}

.notice.warn{
  border-color: color-mix(in srgb, #f59e0b 50%, var(--border));
}

.logwrap{ margin-top: 10px; }
.log{
  margin: 0;
  height: 220px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: color-mix(in srgb, var(--panel) 70%, var(--bg));
  font-size: 12px;
  color: color-mix(in srgb, var(--text) 85%, var(--muted));
}

.kv{
  display: grid;
  gap: 8px;
}
.kv-row{
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  align-items: baseline;
}
@media (max-width: 520px){
  .kv-row{ grid-template-columns: 1fr; }
}
.kv-k{ font-size: 12px; color: var(--muted); }
.kv-v{ font-size: 14px; }

.stack{ display: grid; gap: 12px; }

.authwrap{
  max-width: 420px;
  margin: 48px auto;
}

@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior: auto !important; transition: none !important; }
}