*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── LIGHT (default) ── */
:root {
  --bg:        oklch(99% 0.002 240);
  --surface:   oklch(100% 0 0);
  --surface2:  oklch(97% 0.003 240);
  --surface3:  oklch(94% 0.004 240);
  --fg:        oklch(18% 0.012 250);
  --muted:     oklch(54% 0.012 250);
  --border:    oklch(88% 0.006 250);
  --accent:    oklch(58% 0.18 255);
  --accent-bg: oklch(58% 0.18 255 / 0.10);
  --success:   oklch(50% 0.17 145);
  --danger:    oklch(52% 0.20 25);
  --warn:      oklch(56% 0.16 80);

  /* JWT part colors — tuned for light backgrounds */
  --col-h: oklch(52% 0.20 295);
  --col-p: oklch(48% 0.16 200);
  --col-s: oklch(54% 0.18 60);

  --font-ui:   -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, 'Cascadia Code', Menlo, monospace;

  --r-sm: 4px;
  --r:    8px;
  --r-lg: 12px;
}

/* ── DARK ── */
html[data-theme="dark"] {
  --bg:        oklch(13% 0.012 250);
  --surface:   oklch(17% 0.012 250);
  --surface2:  oklch(21% 0.013 250);
  --surface3:  oklch(25% 0.013 250);
  --fg:        oklch(92% 0.008 250);
  --muted:     oklch(56% 0.012 250);
  --border:    oklch(26% 0.012 250);
  --accent:    oklch(62% 0.18 255);
  --accent-bg: oklch(62% 0.18 255 / 0.12);
  --success:   oklch(66% 0.17 145);
  --danger:    oklch(63% 0.20 25);
  --warn:      oklch(76% 0.16 80);
  --col-h: oklch(72% 0.17 295);
  --col-p: oklch(72% 0.15 200);
  --col-s: oklch(74% 0.17 60);
}

html, body { height: 100%; background: var(--bg); color: var(--fg); font-family: var(--font-ui); font-size: 14px; line-height: 1.5; -webkit-font-smoothing: antialiased; }

/* ── GITHUB RIBBON ── */
.github-fork-ribbon:before {
  background-color: var(--danger);
}

/* ── NAV ── */
.nav {
  display: flex; align-items: center; height: 48px;
  border-bottom: 1px solid var(--border); background: var(--surface);
  padding: 0 24px; position: sticky; top: 0; z-index: 100; gap: 0;
}
.logo {
  display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px;
  letter-spacing: -0.02em; margin-right: 32px; color: var(--fg); text-decoration: none; flex-shrink: 0;
}
.logo-mark {
  width: 24px;
  height: 24px;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}
.nav-tabs { display: flex; height: 100%; }
.nav-tab {
  display: flex; align-items: center; padding: 0 16px; height: 100%;
  font-size: 13px; font-weight: 500; color: var(--muted); cursor: pointer;
  border: none; background: none; border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s; white-space: nowrap; font-family: var(--font-ui);
}
.nav-tab:hover { color: var(--fg); }
.nav-tab.active { color: var(--fg); border-bottom-color: var(--accent); }

/* ── VIEWS ── */
.main { min-height: calc(100vh - 48px); }
.view { display: none; padding: 24px; max-width: 1400px; margin: 0 auto; }
.view.active { display: block; }

/* ── LAYOUT ── */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.stack { display: flex; flex-direction: column; gap: 16px; }

/* ── PANEL ── */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; }
.panel-hd {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; border-bottom: 1px solid var(--border); background: var(--surface2);
}
.panel-title { font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.panel-bd { padding: 16px; }

/* ── INPUTS ── */
textarea, input[type="text"], input[type="password"], select {
  width: 100%; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r); color: var(--fg); font-family: var(--font-ui); font-size: 13px;
  padding: 8px 12px; outline: none; transition: border-color .15s;
}
textarea { font-family: var(--font-mono); font-size: 12px; line-height: 1.6; resize: vertical; }
textarea:focus, input:focus, select:focus { border-color: var(--accent); }
select option { background: var(--surface2); }

label { display: block; font-size: 12px; font-weight: 500; color: var(--muted); margin-bottom: 5px; }
.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }

/* ── CODE DISPLAYS ── */
.jwt-display {
  font-family: var(--font-mono); font-size: 13px; line-height: 1.7; word-break: break-all;
  padding: 12px; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r); min-height: 56px;
}
.token-inspector {
  font-family: var(--font-mono); font-size: 12px; line-height: 1.75; word-break: break-all;
  padding: 12px; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r); min-height: 58px;
}
.token-seg {
  border-radius: 3px; cursor: pointer; transition: background .12s, outline-color .12s;
  outline: 1px solid transparent;
}
.token-seg:hover, .token-seg.active {
  background: color-mix(in oklch, currentColor 14%, transparent);
  outline-color: color-mix(in oklch, currentColor 44%, transparent);
}
.target-flash {
  animation: targetFlash 1.25s ease-out;
}
@keyframes targetFlash {
  0%, 72% {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-bg);
  }
  100% {
    border-color: var(--border);
    box-shadow: none;
  }
}
.json-block {
  font-family: var(--font-mono); font-size: 12px; line-height: 1.75;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r); padding: 12px; overflow-x: auto; white-space: pre; tab-size: 2;
}
.mono-val {
  font-family: var(--font-mono); font-size: 12px; word-break: break-all;
  padding: 9px 12px; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r); color: var(--fg); min-height: 38px; line-height: 1.6;
}

/* JWT part colors */
.jh { color: var(--col-h); } .jp { color: var(--col-p); } .js { color: var(--col-s); } .jd { color: var(--muted); }
.sd-disc-token { color: var(--success); }
.sd-kb-token { color: var(--accent); }
/* JSON syntax */
.jk { color: var(--col-h); } .jv { color: var(--col-p); } .jn { color: var(--col-s); } .jb { color: oklch(68% 0.15 145); } .jz { color: var(--muted); }

/* ── BADGES ── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; font-weight: 600; letter-spacing: .04em; padding: 2px 7px; border-radius: 4px;
}
.badge-ok  { background: oklch(66% 0.17 145 / .14); color: var(--success); }
.badge-err { background: oklch(63% 0.20 25 / .14);  color: var(--danger); }
.badge-dim { background: var(--surface3); color: var(--muted); }
.badge-warn{ background: oklch(76% 0.16 80 / .14); color: var(--warn); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px;
  border-radius: var(--r); font-size: 13px; font-weight: 500; cursor: pointer;
  border: none; transition: opacity .15s, background .15s; font-family: var(--font-ui);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: .85; }
.btn-secondary { background: var(--surface3); color: var(--fg); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--surface2); }
.btn-ghost { background: transparent; color: var(--muted); padding: 5px 8px; }
.btn-ghost:hover { color: var(--fg); background: var(--surface3); }
.btn-sm { font-size: 12px; padding: 4px 10px; }
.btn-copy-feedback {
  min-width: 64px;
  justify-content: center;
  border: 1px solid transparent;
}
.btn-copy-feedback.copied {
  color: var(--success);
  background: oklch(66% 0.17 145 / .10);
  border-color: oklch(66% 0.17 145 / .25);
}
.btn-copy-feedback.failed {
  color: var(--danger);
  background: oklch(63% 0.20 25 / .10);
  border-color: oklch(63% 0.20 25 / .25);
}

/* ── SUB-TABS ── */
.sub-tabs {
  display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px;
}
.sub-tab {
  padding: 8px 14px; font-size: 13px; font-weight: 500; color: var(--muted);
  background: none; border: none; border-bottom: 2px solid transparent; cursor: pointer;
  transition: color .15s, border-color .15s; font-family: var(--font-ui); margin-bottom: -1px;
}
.sub-tab:hover { color: var(--fg); }
.sub-tab.active { color: var(--fg); border-bottom-color: var(--accent); }
.sub-view { display: none; }
.sub-view.active { display: block; }

/* ── SECTION LABEL ── */
.sec-label {
  font-size: 11px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 8px; margin-top: 18px;
}
.sec-label:first-child { margin-top: 0; }

/* ── ALGO PILLS ── */
.algo-pills { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 14px; }
.algo-pill {
  padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 700;
  font-family: var(--font-mono); background: var(--surface3); border: 1px solid var(--border);
  color: var(--muted); cursor: pointer; transition: all .15s; letter-spacing: .02em;
}
.algo-pill.active { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }
.algo-pill.algo-weak  { border-color: oklch(76% 0.16 80 / .55); }
.algo-pill.algo-unsafe { border-color: oklch(63% 0.20 25 / .55); color: var(--danger); }
.algo-pill.algo-weak.active  { border-color: var(--warn); background: oklch(76% 0.16 80 / .12); color: oklch(60% 0.14 80); }
.algo-pill.algo-unsafe.active { border-color: var(--danger); background: oklch(63% 0.20 25 / .10); color: var(--danger); }

/* ── ALGO WARNING STRIP ── */
.algo-warn-strip { display:none; margin-bottom: 10px; border-radius: 6px; padding: 7px 10px;
  font-size: 11px; line-height: 1.5; font-family: var(--font-ui); }
.algo-warn-strip.algo-warn-sym  { background: oklch(76% 0.16 80 / .12); color: oklch(52% 0.14 80); border: 1px solid oklch(76% 0.16 80 / .35); }
.algo-warn-strip.algo-warn-none { background: oklch(63% 0.20 25 / .10); color: var(--danger);   border: 1px solid oklch(63% 0.20 25 / .35); }

/* ── COPY WRAPPER ── */
.copy-wrap { position: relative; }
.copy-btn-abs {
  position: absolute; right: 8px; top: 8px; background: var(--surface3);
  border: 1px solid var(--border); border-radius: var(--r-sm); color: var(--muted);
  padding: 2px 7px; font-size: 10px; font-weight: 600; cursor: pointer;
  font-family: var(--font-ui); transition: color .15s; letter-spacing: .04em; text-transform: uppercase;
}
.copy-btn-abs:hover { color: var(--fg); }

/* ── ERROR BOX ── */
.err-box {
  padding: 9px 13px; background: oklch(63% 0.20 25 / .1); border: 1px solid oklch(63% 0.20 25 / .3);
  border-radius: var(--r); color: var(--danger); font-size: 12px;
}

/* ── CLAIM ROWS (SD-JWT builder) ── */
.claim-row {
  display: grid; grid-template-columns: 22px 1fr 1fr 32px; gap: 6px;
  align-items: center; margin-bottom: 6px;
}
.claim-row input[type="checkbox"] { width: 14px; height: 14px; accent-color: var(--accent); cursor: pointer; }

/* ── DISCLOSURE ITEM ── */
.disc-item {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  padding: 9px 12px; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r); margin-bottom: 6px;
}
.disc-key { font-family: var(--font-mono); font-size: 12px; font-weight: 700; color: var(--col-h); }
.disc-val { font-family: var(--font-mono); font-size: 12px; color: var(--col-p); margin-top: 1px; }
.disc-raw { font-family: var(--font-mono); font-size: 10px; color: var(--muted); word-break: break-all; max-width: 200px; text-align: right; }

/* ── CLAIMS TABLE ── */
.ct { width: 100%; border-collapse: collapse; font-size: 12px; }
.ct th { text-align: left; padding: 6px 12px; font-size: 10px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--border); }
.ct td { padding: 7px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.ct tr:last-child td { border-bottom: none; }
.ct .ck { font-family: var(--font-mono); font-size: 11px; color: var(--col-h); width: 130px; }
.ct .cv { font-family: var(--font-mono); font-size: 11px; color: var(--col-p); }

/* ── PKCE FLOW ── */
.url-display {
  font-family: var(--font-mono); font-size: 12px; word-break: break-all;
  padding: 12px; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r); color: var(--fg); min-height: 64px; line-height: 1.7;
}
.ua { color: var(--accent); } .uv { color: var(--col-p); } .ub { color: var(--muted); }

/* ── META ROW ── */
.meta-row { display: flex; flex-direction: column; gap: 3px; font-size: 12px; }
.meta-row span { color: var(--muted); }

/* ── HINT ── */
.hint { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* ── STEP CIRCLES ── */
.step-circle {
  width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: #fff;
  font-size: 10px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

/* ── UTILS ── */
.row { display: flex; align-items: center; gap: 8px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.mt-8  { margin-top:  8px; } .mt-12 { margin-top: 12px; } .mt-16 { margin-top: 16px; }
.text-muted { color: var(--muted); } .text-mono { font-family: var(--font-mono); font-size: 12px; }
.text-sm { font-size: 12px; }
.col-h { color: var(--col-h); } .col-p { color: var(--col-p); } .col-s { color: var(--col-s); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .view { padding: 12px; }
  .nav { padding: 0 12px; }
  .nav-tab { padding: 0 10px; font-size: 12px; }
  .logo span { display: none; }
}

/* ── THEME TOGGLE ── */
.theme-toggle {
  margin-left: auto; width: 36px; height: 36px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface2); border: 1px solid var(--border); border-radius: var(--r);
  color: var(--muted); cursor: pointer; transition: background .15s, border-color .15s, color .15s;
}
.theme-toggle:hover { background: var(--surface3); border-color: var(--accent); color: var(--fg); }
.theme-toggle svg { width: 17px; height: 17px; stroke: currentColor; }
.theme-icon { display: none; }
html[data-theme="dark"] .theme-icon-sun { display: block; }
html:not([data-theme="dark"]) .theme-icon-moon { display: block; }

/* ── VERSION ── */
.version-footer {
  position: fixed;
  right: 14px;
  bottom: 10px;
  z-index: 90;
  color: var(--muted);
  font-size: 11px;
  font-family: var(--font-ui);
  line-height: 1.4;
  opacity: .78;
}

/* ── SEGMENTED CONTROL ── */
.seg-ctrl { display: inline-flex; border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; background: var(--surface2); }
.seg-btn { padding: 3px 9px; font-size: 11px; font-weight: 500; color: var(--muted); background: none; border: none; cursor: pointer; transition: all .15s; font-family: var(--font-ui); white-space: nowrap; }
.seg-btn + .seg-btn { border-left: 1px solid var(--border); }
.seg-btn.active { background: var(--accent); color: #fff; }
.seg-btn:hover:not(.active) { background: var(--surface3); color: var(--fg); }

/* ── COMPLIANCE PANEL ── */
.comp-group { margin-top: 12px; }
.comp-group:first-child { margin-top: 0; }
.comp-group-hd { font-size: 10px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); margin-bottom: 5px; }
.comp-row { display: flex; align-items: baseline; gap: 8px; padding: 5px 0; border-bottom: 1px solid var(--border); }
.comp-row:last-child { border-bottom: none; }
.comp-claim { font-family: var(--font-mono); font-size: 11px; color: var(--col-h); flex: 0 0 110px; }
.comp-desc { font-size: 11px; color: var(--muted); flex: 1; min-width: 0; }
.comp-ref { font-size: 10px; color: var(--muted); font-family: var(--font-mono); white-space: nowrap; }
.badge-required { background: oklch(63% 0.20 25 / .12); color: var(--danger); }
.badge-conditional { background: oklch(76% 0.16 80 / .14); color: var(--warn); }
.badge-recommended { background: oklch(58% 0.18 255 / .12); color: var(--accent); }
.badge-optional { background: var(--surface3); color: var(--muted); }
.comp-empty { font-size: 12px; color: var(--success); padding: 8px 0; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }