:root {
  color-scheme: dark;
  --bg: #071018;
  --bg-soft: #0c1724;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --text: #eef6ff;
  --muted: #9eb2c7;
  --line: rgba(255, 255, 255, 0.12);
  --brand: #6ee7f9;
  --brand-2: #a78bfa;
  --success: #72f0b3;
  --warning: #facc15;
  --danger: #fb7185;
  --control-bg: #0b1724;
  --control-bg-strong: #102033;
  --control-text: #eef6ff;
  --control-muted: #b6c7d9;
  --control-line: rgba(184, 214, 235, 0.28);
  --shadow: 0 22px 80px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(110, 231, 249, 0.16), transparent 28rem),
    radial-gradient(circle at top right, rgba(167, 139, 250, 0.18), transparent 30rem),
    linear-gradient(180deg, #071018 0%, #08111b 42%, #060b12 100%);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
input, select, textarea {
  color: var(--control-text);
  color-scheme: dark;
}
input::placeholder, textarea::placeholder {
  color: rgba(182, 199, 217, 0.72);
  opacity: 1;
}
button:disabled { opacity: 0.52; cursor: not-allowed; transform: none !important; }
code {
  color: var(--brand);
  background: rgba(110, 231, 249, 0.08);
  border: 1px solid rgba(110, 231, 249, 0.16);
  padding: 0.12rem 0.35rem;
  border-radius: 8px;
}
pre {
  overflow: auto;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.26);
  color: var(--muted);
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(7, 16, 24, 0.78);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
  letter-spacing: -0.03em;
  min-width: max-content;
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #061019;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 12px 40px rgba(110, 231, 249, 0.24);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}
.nav-links a:hover { color: var(--text); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.lang-select {
  min-height: 38px;
  border-radius: 999px;
  border: 1px solid var(--control-line);
  background: var(--control-bg);
  color: var(--control-text);
  padding: 0 12px;
  outline: none;
}
.lang-select:focus {
  border-color: rgba(110, 231, 249, 0.58);
  box-shadow: 0 0 0 3px rgba(110, 231, 249, 0.12);
}
.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-weight: 750;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}
.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(110, 231, 249, 0.38);
  background: var(--panel-strong);
}
.btn.primary {
  color: #061019;
  border: 0;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.btn.ghost { background: transparent; }
.btn.small { min-height: 34px; padding: 0 12px; font-size: 13px; }

.hero { padding: 86px 0 54px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 42px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
h1 {
  margin: 18px 0 18px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.92;
  letter-spacing: -0.075em;
}
h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}
h3 {
  margin: 0 0 10px;
  font-size: 22px;
  letter-spacing: -0.03em;
}
p { color: var(--muted); line-height: 1.72; }
.lead { font-size: 19px; max-width: 760px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }

.hero-card, .card, .tool-panel, .notice, .result-box {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.045));
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-card { padding: 26px; position: relative; overflow: hidden; }
.hero-card::before {
  content: "";
  position: absolute;
  inset: -80px -80px auto auto;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(110, 231, 249, 0.18), transparent 70%);
}

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.status-row:last-child { border-bottom: 0; }
.status-label { color: var(--muted); }
.status-value { font-weight: 850; text-align: right; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  font-size: 13px;
}
.pill.ready { color: var(--success); border-color: rgba(114, 240, 179, 0.24); }
.pill.warn { color: var(--warning); border-color: rgba(250, 204, 21, 0.24); }

.section { padding: 58px 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 26px;
}
.section-head p { max-width: 580px; margin: 0; }

.grid { display: grid; gap: 18px; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card { padding: 24px; }
.card .icon {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #061019;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  margin-bottom: 18px;
  font-size: 22px;
}
.card .meta { color: var(--success); font-weight: 850; font-size: 13px; }
.warning-card {
  border-color: rgba(250, 204, 21, 0.35);
  background: rgba(250, 204, 21, 0.08);
}
.danger-card {
  border-color: rgba(251, 113, 133, 0.35);
  background: rgba(251, 113, 133, 0.08);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 36px 0;
  color: var(--muted);
  font-size: 14px;
}

.page-hero { padding: 58px 0 24px; }

.tool-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 22px;
  padding-bottom: 70px;
}

.sidebar {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.045);
  padding: 16px;
  align-self: start;
  position: sticky;
  top: 92px;
}
.side-link {
  display: block;
  padding: 13px 14px;
  border-radius: 14px;
  color: var(--muted);
}
.side-link.active, .side-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}

.tool-panel { padding: 26px; }
.placeholder-box {
  border: 1px dashed rgba(110, 231, 249, 0.32);
  border-radius: var(--radius-lg);
  padding: 24px;
  background: rgba(110, 231, 249, 0.045);
}

.form-grid { display: grid; gap: 16px; }
.field label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 750;
}
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  border-radius: 14px;
  color: var(--control-text);
  border: 1px solid var(--control-line);
  background: var(--control-bg);
  outline: none;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: rgba(110, 231, 249, 0.58);
  box-shadow: 0 0 0 3px rgba(110, 231, 249, 0.12);
}
.field textarea { min-height: 140px; resize: vertical; }
.field input[type="checkbox"] {
  width: auto;
  min-height: auto;
  transform: translateY(1px);
  accent-color: var(--brand);
}
.field input[type="file"] {
  padding: 9px 12px;
}
.field input[type="file"]::file-selector-button {
  min-height: 30px;
  margin-right: 12px;
  border: 1px solid var(--control-line);
  border-radius: 999px;
  background: var(--control-bg-strong);
  color: var(--control-text);
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}
.field input[type="file"]::file-selector-button:hover {
  border-color: rgba(110, 231, 249, 0.38);
}
select option,
select optgroup {
  background-color: var(--control-bg);
  color: var(--control-text);
}
select option:checked {
  background-color: var(--control-bg-strong);
  color: var(--control-text);
}
select option:disabled,
select optgroup:disabled {
  color: var(--control-muted);
}
.checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  color: var(--muted);
}
.checkbox-row label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.dropzone {
  display: grid;
  place-items: center;
  min-height: 170px;
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.035);
  text-align: center;
  padding: 24px;
}
.dropzone.dragover {
  border-color: var(--brand);
  background: rgba(110, 231, 249, 0.08);
}
.dropzone strong { display: block; margin-bottom: 6px; }

.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

.table-like { display: grid; gap: 10px; }
.table-row {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,0.035);
}
.table-row strong { color: var(--text); }

.notice, .result-box {
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  margin: 18px 0;
}
.result-box {
  display: none;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--muted);
}
.result-box.show { display: block; }
.result-box.success { border-color: rgba(114,240,179,.35); background: rgba(114,240,179,.06); }
.result-box.error { border-color: rgba(251,113,133,.35); background: rgba(251,113,133,.08); color: #fecdd3; }

.compat-panel {
  margin: 22px 0 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.045);
}

.compat-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: start;
  margin-bottom: 16px;
}

.compat-head h2 {
  margin-top: 8px;
  font-size: clamp(24px, 3vw, 34px);
}

.compat-head p {
  max-width: 760px;
  margin: 0;
}

.compat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.compat-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  min-height: 116px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,0.035);
}

.compat-item strong {
  display: block;
  margin-bottom: 6px;
}

.compat-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
}

.compat-state {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 850;
  white-space: nowrap;
}

.compat-item.ready .compat-state {
  color: var(--success);
  background: rgba(114,240,179,.08);
  border: 1px solid rgba(114,240,179,.28);
}

.compat-item.limited .compat-state {
  color: var(--warning);
  background: rgba(250,204,21,.08);
  border: 1px solid rgba(250,204,21,.28);
}

.compat-item.missing .compat-state {
  color: #fecdd3;
  background: rgba(251,113,133,.1);
  border: 1px solid rgba(251,113,133,.28);
}

.file-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  margin-top: 12px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255,255,255,.045);
}
.file-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.hash-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.hash-table th, .hash-table td {
  text-align: left;
  padding: 13px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  vertical-align: top;
}
.hash-table th { color: var(--text); font-size: 13px; }
.hash-table td.hash-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
  font-size: 13px;
}

@media (max-width: 860px) {
  .container { width: min(100% - 28px, 1180px); }
  .nav-inner { min-height: 66px; }
  .mobile-menu-btn { display: inline-grid; place-items: center; }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(7,16,24,.96);
    box-shadow: var(--shadow);
  }
  .nav.open .nav-links { display: flex; }
  .nav-links a { padding: 12px 14px; border-radius: 14px; }
  .nav-links a:hover { background: rgba(255,255,255,.06); }
  .hero { padding: 54px 0 28px; }
  .hero-grid, .tool-layout, .grid.two, .grid.three, .grid.four {
    grid-template-columns: 1fr;
  }
  .section { padding: 38px 0; }
  .section-head { display: block; }
  .sidebar { position: static; }
  h1 { font-size: 46px; letter-spacing: -0.06em; }
  .table-row { grid-template-columns: 1fr; }
  .hero-actions .btn, .tool-panel .btn { width: 100%; }
  .hash-table { display: block; overflow-x: auto; }
  .compat-grid { grid-template-columns: 1fr; }
  .compat-item { grid-template-columns: 1fr; min-height: 0; }
}


/* v0.4 additions */
.factor-options {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.035);
}

.factor-options > strong {
  display: block;
  margin-bottom: 2px;
}

.factor-detail {
  display: none;
  margin-top: 12px;
}

.factor-detail.show {
  display: block;
}

.gesture-widget {
  display: grid;
  gap: 12px;
}

.gesture-canvas {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1 / 1;
  border-radius: 24px;
  border: 1px solid rgba(110, 231, 249, 0.24);
  background:
    radial-gradient(circle at 30% 20%, rgba(110, 231, 249, 0.08), transparent 35%),
    rgba(255, 255, 255, 0.035);
  touch-action: none;
}

.gesture-sequence {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.factor-note {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
}

.password-meter {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
  border: 1px solid var(--line);
}

.password-meter span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

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

.kbd {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 8px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.06);
  color: var(--muted);
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (max-width: 860px) {
  .gesture-canvas {
    max-width: 100%;
  }
  .inline-actions {
    display: grid;
  }
}


/* v0.5 additions */
.file-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.file-list-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,0.035);
}

.file-list-item strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-list-item span {
  color: var(--muted);
  font-size: 13px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.summary-card {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,0.035);
}

.summary-card span {
  color: var(--muted);
  font-size: 12px;
}

.summary-card strong {
  display: block;
  margin-top: 4px;
  font-size: 16px;
}

.help-list {
  color: var(--muted);
  line-height: 1.8;
  padding-left: 20px;
}

@media (max-width: 860px) {
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .file-list-item {
    grid-template-columns: 1fr;
  }
}