:root {
  --bg: #f3f5f7;
  --surface: #ffffff;
  --surface-soft: #f8fbfc;
  --ink: #16212b;
  --muted: #4f6473;
  --line: #d9e3ea;
  --accent: #0f8b8d;
  --accent-strong: #0c5f78;
  --highlight: #f29f5c;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow: 0 18px 40px rgba(10, 37, 64, 0.1);
  --content: 1180px;
}

html[data-theme="dark"] {
  --bg: #0d141d;
  --surface: #121b25;
  --surface-soft: #172432;
  --ink: #e8eef5;
  --muted: #a9b8c8;
  --line: #253547;
  --accent: #4ad3d6;
  --accent-strong: #7db4ff;
  --highlight: #ffc580;
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.36);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(
      circle at top right,
      rgba(15, 139, 141, 0.15),
      transparent 34%
    ),
    radial-gradient(
      circle at left top,
      rgba(242, 159, 92, 0.14),
      transparent 26%
    ),
    linear-gradient(180deg, #f7f8fa, var(--bg));
  font-family: "Sora", sans-serif;
  line-height: 1.55;
}

html[data-theme="dark"] body {
  background:
    radial-gradient(
      circle at top right,
      rgba(74, 211, 214, 0.15),
      transparent 34%
    ),
    radial-gradient(
      circle at left top,
      rgba(125, 180, 255, 0.14),
      transparent 26%
    ),
    linear-gradient(180deg, #0a1118, var(--bg));
}

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

code,
pre,
kbd,
select,
input,
textarea,
button {
  font-family: "IBM Plex Mono", monospace;
}

.page {
  width: min(calc(100% - 2rem), var(--content));
  margin: 0 auto;
  padding: 1rem 0 4rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus-visible {
  left: 1rem;
  top: 1rem;
  z-index: 40;
  background: #101820;
  color: #fff;
  padding: 0.6rem 0.8rem;
  border-radius: 999px;
}

.topbar {
  position: sticky;
  top: 0.75rem;
  z-index: 10;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 0.85rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

html[data-theme="dark"] .topbar {
  background: rgba(18, 27, 37, 0.88);
}

.brand {
  font-weight: 800;
  letter-spacing: 0.01em;
}

.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  border-bottom: 2px solid transparent;
  padding-bottom: 0.2rem;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.hero {
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 2rem;
  background:
    radial-gradient(
      circle at 100% 0%,
      rgba(15, 139, 141, 0.15),
      transparent 34%
    ),
    linear-gradient(180deg, #ffffff, #f7fbfd);
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 0.2rem 0 0.7rem;
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.eyebrow {
  margin: 0;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.78rem;
}

.hero p {
  max-width: 70ch;
  color: var(--muted);
}

.hero-actions {
  margin-top: 1.2rem;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  min-height: 42px;
  padding: 0 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

html[data-theme="dark"] .btn-secondary {
  background: #14202d;
}

.theme-toggle {
  min-width: 108px;
}

.layout {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 1rem;
}

.sidebar,
.panel,
.card,
.form-card,
.output-card,
.table-wrap,
.notice {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 10px 25px rgba(10, 37, 64, 0.06);
}

.sidebar {
  padding: 1rem;
  position: sticky;
  top: 5.5rem;
  align-self: start;
}

.sidebar nav {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.sidebar nav a {
  border-radius: 10px;
  padding: 0.45rem 0.55rem;
  color: var(--muted);
}

.sidebar nav a:hover {
  background: var(--surface-soft);
  color: var(--ink);
}

.content {
  display: grid;
  gap: 1rem;
}

.main-top-gap {
  margin-top: 1rem;
}

.section {
  padding: 1.35rem;
}

.section h2 {
  margin: 0.2rem 0 0.8rem;
  font-size: clamp(1.35rem, 2.8vw, 2.2rem);
  letter-spacing: -0.02em;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.card {
  padding: 1rem;
}

.card h3,
.form-card h3,
.output-card h3 {
  margin: 0.2rem 0 0.5rem;
}

.card p,
.section p,
.section li,
.notice,
.meta {
  color: var(--muted);
}

.command-examples {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.command-examples li {
  border: 1px solid var(--line);
  background: var(--surface-soft);
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
  display: grid;
  gap: 0.3rem;
}

.command-label {
  font-weight: 700;
  color: var(--ink);
}

.command-snippet {
  display: block;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  line-height: 1.45;
}

.pill-row {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.pill {
  border: 1px solid var(--line);
  background: var(--surface-soft);
  border-radius: 999px;
  padding: 0.4rem 0.7rem;
  font-size: 0.82rem;
}

.form-grid {
  display: grid;
  gap: 0.8rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

input,
select,
textarea {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  min-height: 42px;
  padding: 0.55rem 0.7rem;
}

input::placeholder,
textarea::placeholder {
  color: var(--muted);
  opacity: 0.85;
}

html[data-theme="dark"] input,
html[data-theme="dark"] select,
html[data-theme="dark"] textarea {
  background: #111d29;
  color: #e8eef5;
  border-color: #2b3f55;
}

html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder {
  color: #8fa3b7;
  opacity: 1;
}

html[data-theme="dark"] input:focus,
html[data-theme="dark"] select:focus,
html[data-theme="dark"] textarea:focus {
  outline: 2px solid rgba(74, 211, 214, 0.35);
  outline-offset: 1px;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.form-card,
.output-card {
  padding: 1rem;
}

.button-row {
  margin-top: 0.7rem;
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.kpi-grid {
  margin-top: 0.8rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.kpi {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  padding: 0.55rem 0.65rem;
  display: grid;
  gap: 0.2rem;
}

.kpi span {
  font-size: 0.75rem;
  color: var(--muted);
}

.kpi strong {
  font-size: 1.1rem;
}

.output-block {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  overflow-x: auto;
  margin: 0.65rem 0 0;
  border: 1px solid var(--line);
  background: #0f1720;
  color: #edf2f7;
  border-radius: var(--radius-md);
  padding: 0.85rem;
  min-height: 180px;
}

html[data-theme="dark"] .output-block {
  background: #0c141e;
  color: #e5edf6;
}

.output-block,
.output-block * {
  max-width: 100%;
}

html[data-theme="dark"] .hero {
  background:
    radial-gradient(
      circle at 100% 0%,
      rgba(74, 211, 214, 0.18),
      transparent 34%
    ),
    linear-gradient(180deg, #121b25, #101923);
}

html[data-theme="dark"] th {
  background: #152231;
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.7rem;
  border-bottom: 1px solid var(--line);
}

th {
  background: #f3f9fb;
}

.notice {
  padding: 0.9rem 1rem;
}

.footer {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 1060px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 740px) {
  .page {
    width: min(calc(100% - 1rem), var(--content));
  }

  .topbar {
    position: static;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .kpi-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 1.3rem;
  }
}