@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/inter-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/inter-700.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --ev-color-bg: #0a0a0a;
  --ev-color-bg-subtle: #101012;
  --ev-color-surface: #141414;
  --ev-color-surface-raised: #1c1c1e;
  --ev-color-border: #262626;
  --ev-color-border-hover: #3a3a3c;
  --ev-color-text: #f5f5f7;
  --ev-color-text-muted: #a1a1a6;
  --ev-color-text-subtle: #b0b0b8;
  --ev-color-accent: #0a84ff;
  --ev-color-accent-hover: #64d2ff;
  --ev-color-accent-soft: rgba(10, 132, 255, 0.14);
  --ev-color-success: #30d158;
  --ev-color-warning: #ff9f0a;
  --ev-color-error: #ff453a;
  --ev-container-page: 1120px;
  --color-bg-primary: var(--ev-color-bg);
  --color-bg-secondary: var(--ev-color-surface);
  --color-bg-tertiary: var(--ev-color-surface-raised);
  --color-border: var(--ev-color-border);
  --color-border-hover: var(--ev-color-border-hover);
  --color-border-subtle: #1e1e1e;
  --color-text-primary: var(--ev-color-text);
  --color-text-secondary: var(--ev-color-text-muted);
  --color-text-muted: var(--ev-color-text-subtle);
  --color-accent: var(--ev-color-accent);
  --color-accent-hover: var(--ev-color-accent-hover);
  --color-accent-soft: var(--ev-color-accent-soft);
  --color-accent-blue: #0066cc;
  --color-accent-cyan: #006d8f;
  --color-success: var(--ev-color-success);
  --color-warning: var(--ev-color-warning);
  --color-error: var(--ev-color-error);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --spacing-md: 1.5rem;
  --spacing-lg: 3rem;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --transition-fast: 0.18s ease;
  --transition-base: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --accent: var(--color-accent);
  --negative: var(--color-error);
  --positive: var(--color-success);
  --warning: var(--color-warning);
  --control: var(--color-border-hover);
  color-scheme: dark;
}

[data-theme="light"] {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f7;
  --color-bg-tertiary: #ffffff;
  --color-border: #d2d2d7;
  --color-border-hover: #b0b0b5;
  --color-border-subtle: #e8e8ed;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-muted: #5f6368;
  --color-accent: #0066cc;
  --color-accent-hover: #007a99;
  --color-accent-soft: rgba(0, 102, 204, 0.14);
  --color-accent-blue: #0066cc;
  --color-accent-cyan: #007a99;
  --color-success: #0f6428;
  --color-warning: #8a4b00;
  --color-error: #c41a16;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
h1, h2, p { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: var(--color-accent-soft); color: var(--color-text-primary); }
.num, .text-mono, .mono, code { font-family: var(--font-mono); }
a { color: var(--color-text-secondary); }
a:hover { color: var(--color-accent-hover); }

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent-blue);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 1100;
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}
.skip-link:focus { top: 0; color: #fff; }

.page-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: 64px;
}
main { flex: 1; }

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  display: flex;
  align-items: center;
  background-color: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--color-border-subtle);
  z-index: 1000;
}
[data-theme="light"] .navbar { background-color: rgba(255, 255, 255, 0.8); }
.container {
  width: 100%;
  max-width: var(--ev-container-page);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}
.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.navbar-brand {
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.0625rem;
  text-decoration: none;
  letter-spacing: 0;
}
.navbar-brand:hover { color: var(--color-text-primary); }
.navbar-brand .brand-product {
  color: var(--ev-color-success);
  font-weight: 500;
}
.theme-toggle {
  margin-left: auto;
  margin-right: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
}
.theme-toggle:hover { color: var(--color-text-primary); }
.theme-toggle .fa-moon,
[data-theme="light"] .theme-toggle .fa-sun { display: block; }
.theme-toggle .fa-sun,
[data-theme="light"] .theme-toggle .fa-moon { display: none; }
.navbar-toggle {
  display: none;
  padding: 0.5rem;
  border: 0;
  background: none;
  cursor: pointer;
  z-index: 1001;
}
.navbar-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  margin: 5px 0;
  background: var(--color-text-secondary);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}
.navbar-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.navbar-toggle.active span:nth-child(2) { opacity: 0; }
.navbar-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.navbar-nav a {
  position: relative;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}
.navbar-nav a:hover { color: var(--color-text-primary); }
.navbar-nav a::after {
  content: "";
  position: absolute;
  bottom: -22px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text-primary);
  transition: width var(--transition-base);
}
.navbar-nav a:hover::after { width: 100%; }
.navbar-nav .navbar-cta {
  color: #fff;
  background: var(--color-accent-blue);
  border: 1px solid var(--color-accent-blue);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.8rem;
}
.navbar-nav .navbar-cta:hover {
  color: #fff;
  background: var(--color-accent-cyan);
  border-color: var(--color-accent-cyan);
}
.navbar-nav .navbar-cta::after { display: none; }

.workspace { padding: 2rem 0 3rem; }
.workspace-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-bottom: 1.25rem;
}
.title-copy { flex: 1 1 18rem; min-width: 0; }
.workspace-head h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}
.sub {
  max-width: 42rem;
  margin-top: 0.85rem;
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.65;
}
.sub .ok { color: var(--positive); }
.sub .bad { color: var(--negative); }
.sub .warn { color: var(--warning); }
.title-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.stamp {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.bench {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
  grid-template-areas:
    "token claims"
    "stack sign";
  gap: 1rem;
  align-items: start;
}
.token { grid-area: token; }
.stack { grid-area: stack; }
.claims { grid-area: claims; }
.sign { grid-area: sign; }
.stack, .panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.panel {
  padding: 1.25rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  scroll-margin-top: 80px;
}
.panel > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
.panel h2 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
}
.payload-panel { flex: 1; }
.token .codebox, .payload-panel .codebox { flex: 1; min-height: 200px; }
.head-panel .codebox { height: 120px; flex: none; }

.parts { display: flex; gap: 1.25rem; }
.parts button {
  padding: 0 0 0.25rem;
  border: 0;
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
}
.parts button[aria-selected="true"] {
  color: var(--color-text-primary);
  box-shadow: inset 0 -1px 0 var(--color-accent);
}
.part-count { margin-left: 0.35rem; color: var(--color-text-muted); }
.shares { display: flex; gap: 3px; height: 8px; }
.shares span {
  display: block;
  flex: 1 1 0;
  min-width: 4px;
  background: var(--color-text-primary);
}
.shares span[data-share="1"] { background: var(--color-text-muted); }
.shares span[data-share="2"] {
  background: transparent;
  box-shadow: inset 0 -2px 0 var(--seal, var(--control));
}

.codebox {
  position: relative;
  min-height: 96px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-primary);
}
.codebox:focus-within { border-color: var(--color-accent); }
.paint, .editor {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 0.75rem 0.875rem;
  border: 0;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  tab-size: 2;
  scrollbar-gutter: stable;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
  font-weight: 400;
}
.paint { color: var(--color-text-primary); pointer-events: none; }
.editor {
  z-index: 1;
  resize: none;
  color: transparent;
  caret-color: var(--color-text-primary);
  background: transparent;
}
.editor:focus, .sig-preview:focus { outline: none; }
.editor::placeholder { color: var(--color-text-muted); }
.editor::selection { background: var(--color-accent-soft); }
.seg { color: var(--color-text-primary); }
.seg-p, .json-str { color: var(--color-text-secondary); }
.seg-dot, .json-pun { color: var(--color-text-muted); }
.json-key { color: var(--color-accent); }
.json-num { color: var(--color-success); }

.hint, .sizes { color: var(--color-text-muted); font-size: 0.75rem; line-height: 1.5; }
.hint.bad { color: var(--negative); }
.hint code, th code, .reading code, #kid code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.field { display: grid; gap: 0.5rem; }
.field label { font-weight: 500; }
.input, .pem, .sig-preview {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
}
.input { height: 44px; padding: 0 0.875rem; }
.pem, .sig-preview {
  min-height: 88px;
  padding: 0.75rem 0.875rem;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
}
.sig-preview { resize: none; }
.input:focus-visible, .pem:focus-visible { outline: none; border-color: var(--color-accent); }
.input::placeholder, .pem::placeholder { color: var(--color-text-muted); }
.select-wrap { position: relative; }
.select-wrap select { appearance: none; padding-right: 2rem; }
.select-wrap svg {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  margin-top: -6px;
  color: var(--color-text-muted);
  pointer-events: none;
}
.check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
}
.check input { width: 16px; height: 16px; accent-color: var(--color-accent); }
.sign { min-height: 0; }
.sig-field { flex: 1; min-height: 0; }
.sign-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.625rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}
.btn-primary {
  background: var(--color-accent-blue);
  border-color: var(--color-accent-blue);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-cyan);
  border-color: var(--color-accent-cyan);
  color: #fff;
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text-secondary);
}
.btn-secondary:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  transform: translateY(-1px);
}
.btn[aria-disabled="true"] { opacity: 0.45; cursor: default; }
.btn[aria-disabled="true"]:hover {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text-secondary);
  transform: none;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 0.5rem;
  border-radius: 999px;
  background: var(--color-bg-tertiary);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}
.pill.pos { background: color-mix(in srgb, var(--color-success) 16%, transparent); color: var(--color-success); }
.pill.neg { background: color-mix(in srgb, var(--color-error) 16%, transparent); color: var(--color-error); }
.pill.warn { background: color-mix(in srgb, var(--color-warning) 16%, transparent); color: var(--color-warning); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: baseline;
}
thead th {
  padding-top: 0;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 500;
}
tbody th {
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  font-weight: 400;
}
th code { margin-left: 0.35rem; }
tbody tr:last-child td, tbody tr:last-child th { border-bottom: 0; }
.reading { display: block; }
.reading.bad { color: var(--negative); }
.reading.warn { color: var(--warning); }
.reading.missing { color: var(--color-text-muted); }
.when {
  display: block;
  margin-top: 0.15rem;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.footer {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--spacing-md) 0;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer a {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  text-decoration: none;
}
.footer a:hover { color: var(--color-text-primary); }
.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-subtle);
  text-align: center;
}

@media (max-width: 768px) {
  .page-shell { padding-top: 56px; }
  .navbar { height: 56px; }
  .navbar .container, .container, .workspace { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
  .navbar-toggle { display: block; }
  .navbar-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
  }
  .navbar-nav.active { display: flex; }
  .navbar-nav li { width: 100%; }
  .navbar-nav a {
    display: block;
    padding: 0.75rem var(--spacing-md);
    font-size: 0.9375rem;
  }
  .navbar-nav a::after { display: none; }
  .navbar-nav .navbar-cta {
    margin: 0.5rem var(--spacing-md) 0;
    text-align: center;
  }
  .workspace-head { flex-direction: column; align-items: stretch; }
  .workspace-head h1 { font-size: 2rem; }
  .title-copy { flex: 0 0 auto; }
  .title-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-content: stretch;
  }
  .stamp, #copy { grid-column: 1 / -1; width: auto; }
  .bench { display: flex; flex-direction: column; align-items: stretch; }
  .panel { width: 100%; }
  .stack { display: contents; }
  .token { order: 1; }
  .sign { order: 2; }
  .payload-panel { order: 3; }
  .head-panel { order: 4; }
  .claims { order: 5; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation: none !important;
  }
  .btn:hover, .btn-primary:hover, .btn-secondary:hover { transform: none; }
}