:root {
  --bg: #0b1020;
  --surface: #121933;
  --surface-2: #1a2345;
  --text: #e8ecf8;
  --muted: #aab4d3;
  --accent: #7c9cff;
  --accent-strong: #98b1ff;
  --border: rgba(255, 255, 255, 0.12);
  --success: #40c48e;
  --warning: #f2b94b;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(124, 156, 255, 0.22), transparent 30%),
    linear-gradient(180deg, #09101f 0%, #0c1122 100%);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(11, 16, 32, 0.75);
  border-bottom: 1px solid var(--border);
}

.site-header .container,
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand span {
  color: var(--accent-strong);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.site-nav > a,
.site-nav .nav-category-trigger,
.site-nav .nav-overlay-link {
  color: var(--muted);
  padding: 8px 12px;
  transition: 0.2s ease;
}

.site-nav > a {
  border-radius: 999px;
}

.site-nav > a:hover,
.site-nav > a[aria-current="page"] {
  color: var(--text);
  background: rgba(124, 156, 255, 0.16);
}

.nav-category {
  position: relative;
}

.nav-category-trigger {
  border: 1px solid transparent;
  background: transparent;
  border-radius: 999px;
  font: inherit;
  cursor: pointer;
}

.nav-category:hover .nav-category-trigger,
.nav-category:focus-within .nav-category-trigger,
.nav-category[data-active="true"] .nav-category-trigger {
  color: var(--text);
  background: rgba(124, 156, 255, 0.16);
  border-color: rgba(124, 156, 255, 0.18);
}

.nav-overlay {
  position: absolute;
  top: calc(100% + 14px);
  left: 0;
  min-width: 620px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 20px;
  padding: 20px;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: rgba(11, 16, 32, 0.96);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: 0.18s ease;
}

.nav-category:hover .nav-overlay,
.nav-category:focus-within .nav-overlay {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-overlay-title {
  margin-bottom: 10px;
}

.nav-overlay-copy p,
.nav-overlay-copy li,
.nav-overlay-link p,
.nav-overlay-links-title {
  color: var(--muted);
  line-height: 1.7;
}

.nav-overlay-list,
.nav-overlay-links {
  display: grid;
  gap: 12px;
}

.nav-overlay-list {
  padding-left: 18px;
  margin: 14px 0 0;
}

.nav-overlay-links-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-overlay-link {
  display: block;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.nav-overlay-link strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.nav-overlay-link:hover,
.nav-overlay-link[aria-current="page"] {
  border-color: rgba(124, 156, 255, 0.35);
  background: rgba(124, 156, 255, 0.12);
}

.nav-badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.nav-badge {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.86rem;
}

.lang-switcher {
  display: inline-flex;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  padding: 4px;
  gap: 4px;
}

.lang-switcher a {
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.92rem;
}

.lang-switcher a[aria-current="true"] {
  background: rgba(124, 156, 255, 0.2);
  color: var(--text);
}

.hero {
  padding: 72px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.panel,
.tool-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 32px;
}

.eyebrow {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(124, 156, 255, 0.16);
  color: var(--accent-strong);
  font-size: 0.92rem;
  margin-bottom: 18px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 1.1;
  margin-bottom: 18px;
}

.lead {
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.8;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button,
button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  background: var(--accent);
  color: #081122;
  font-weight: 700;
  cursor: pointer;
  transition: 0.2s ease;
}

.button.secondary,
button.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid var(--border);
}

.button:hover,
button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.hero-panel {
  padding: 28px;
}

.stats {
  display: grid;
  gap: 16px;
}

.stat {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.stat strong {
  display: block;
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.section {
  padding: 24px 0 72px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 20px;
}

.section-heading p {
  color: var(--muted);
  max-width: 720px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.tool-card {
  padding: 24px;
}

.tool-card h3 {
  margin-bottom: 12px;
}

.tool-card p {
  color: var(--muted);
  line-height: 1.7;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 22px;
}

.tag {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.88rem;
}

.page-hero {
  padding: 64px 0 24px;
}

.page-hero p {
  color: var(--muted);
  max-width: 780px;
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 0.94rem;
  margin-bottom: 18px;
}

.breadcrumb a:hover {
  color: var(--text);
}

.breadcrumb span[aria-hidden="true"] {
  opacity: 0.55;
}

.panel {
  padding: 24px;
}

.panel-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-group {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

label,
.field-label {
  font-weight: 650;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.875rem;
  line-height: 1.45;
}

input,
textarea,
select {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(7, 11, 24, 0.65);
  color: var(--text);
  padding: 12px 14px;
  font: inherit;
}

textarea {
  min-height: 200px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid rgba(124, 156, 255, 0.5);
  border-color: transparent;
}

.checkbox-grid {
  display: grid;
  gap: 10px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.checkbox-row input {
  width: auto;
}

.result-box,
.metric-list,
.notice {
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.result-box {
  padding: 18px;
  word-break: break-all;
  min-height: 70px;
}

.result-box code {
  font-size: 1rem;
}

.result-box pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.metric-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  overflow: hidden;
}

.metric {
  padding: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.metric strong {
  display: block;
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.tool-layout {
  display: grid;
  gap: 20px;
}

.tool-layout.two-column {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.tool-layout.three-column {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.panel .result-box + .tool-actions {
  margin-top: 12px;
  margin-bottom: 24px;
}

.panel .cmd-desc {
  margin: 10px 0 10px;
}

.panel .cmd-desc + .tool-actions {
  margin-top: 8px;
  margin-bottom: 24px;
}

.mono-textarea,
.mono-input,
.mono-output {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.mono-output {
  font-size: 0.96rem;
}

.output-grid {
  display: grid;
  gap: 16px;
}

.inline-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
}

.inline-metric {
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.inline-metric strong {
  display: block;
  font-size: 1.35rem;
  margin-bottom: 6px;
}

.helper-text {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

.color-preview {
  height: 120px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, #ffffff, #000000);
}

.color-meta {
  display: grid;
  gap: 12px;
}

.qr-output {
  min-height: 280px;
  display: grid;
  place-items: center;
  padding: 18px;
}

.qr-output svg {
  width: min(100%, 260px);
  height: auto;
  background: #ffffff;
  padding: 10px;
  border-radius: 12px;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(124, 156, 255, 0.12);
  color: var(--text);
  border: 1px solid rgba(124, 156, 255, 0.2);
}

.notice {
  padding: 14px 16px;
  color: var(--muted);
  line-height: 1.7;
}

.status {
  min-height: 24px;
  margin-top: 12px;
  color: var(--success);
  font-weight: 600;
}

.content-stack {
  display: grid;
  gap: 20px;
}

.prose {
  color: var(--muted);
  line-height: 1.9;
}

.prose p:last-child {
  margin-bottom: 0;
}

.info-list {
  display: grid;
  gap: 10px;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.faq-item h3 {
  margin-bottom: 10px;
}

.faq-item p,
.panel ul,
.panel ol {
  color: var(--muted);
  line-height: 1.8;
}

.link-list {
  display: grid;
  gap: 12px;
  padding-left: 18px;
}

.link-list a {
  color: var(--accent-strong);
}

.link-list a:hover {
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 56px;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
}

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

  .site-header .container,
  .site-footer .container,
  .section-heading {
    align-items: start;
    flex-direction: column;
  }

  .header-actions,
  .site-nav {
    width: 100%;
    align-items: stretch;
  }

  .site-nav {
    flex-direction: column;
  }

  .site-nav > a,
  .nav-category-trigger {
    width: 100%;
    text-align: left;
  }

  .nav-overlay {
    position: static;
    min-width: 0;
    margin-top: 10px;
    grid-template-columns: 1fr;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }

  .nav-category:hover .nav-overlay,
  .nav-category:focus-within .nav-overlay,
  .nav-category[data-active="true"] .nav-overlay {
    display: grid;
  }
}