/* ========================================================================
   QWERTYCOM — design tokens + component styles
   Concept: engineering-grade enterprise communications integrator.
   Cool neutral surfaces, single signal-blue accent, precise schematic motifs.
   ======================================================================== */

/* ---------- Fonts ---------- */
@font-face {
  font-family: 'system-fallback';
  src: local('Arial');
  font-display: swap;
}

:root {
  --font-display: 'Cabinet Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Satoshi', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

/* ---------- Type scale ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6vw, 6rem);
}

/* ---------- Spacing (4px system) ---------- */
:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ---------- Color — light ---------- */
:root,
[data-theme='light'] {
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-surface-2: #fbfcfd;
  --color-surface-offset: #eceff2;
  --color-surface-offset-2: #e2e6eb;
  --color-surface-dynamic: #dde2e8;
  --color-divider: #e1e5ea;
  --color-border: #d3d9e0;

  --color-text: #10151c;
  --color-text-muted: #55606c;
  --color-text-faint: #98a1ab;
  --color-text-inverse: #f7f9fb;

  --color-primary: #1a56c4;
  --color-primary-hover: #123f96;
  --color-primary-active: #0d2f73;
  --color-primary-highlight: #dbe6fb;

  --color-warning: #a15a12;
  --color-warning-hover: #7c460e;
  --color-warning-active: #59320a;
  --color-warning-highlight: #ead9c4;

  --color-error: #b0243f;
  --color-error-hover: #8a1c32;
  --color-error-active: #641526;
  --color-error-highlight: #ead0d5;

  --color-success: #1f7a4d;
  --color-success-hover: #175f3c;
  --color-success-active: #114630;
  --color-success-highlight: #d3e8dc;

  --radius-sm: 0.3125rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 250 / 0.06);
  --shadow-md: 0 6px 16px oklch(0.2 0.02 250 / 0.08);
  --shadow-lg: 0 16px 40px oklch(0.2 0.02 250 / 0.14);

  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1240px;
  --content-full: 100%;

  --grid-line: oklch(0.2 0.02 250 / 0.06);
}

/* ---------- Color — dark ---------- */
[data-theme='dark'] {
  --color-bg: #0a0e13;
  --color-surface: #10151c;
  --color-surface-2: #141a22;
  --color-surface-offset: #171e27;
  --color-surface-offset-2: #1c242f;
  --color-surface-dynamic: #232c38;
  --color-divider: #1f2731;
  --color-border: #2b3540;

  --color-text: #dde3ea;
  --color-text-muted: #8a94a1;
  --color-text-faint: #5b6570;
  --color-text-inverse: #0a0e13;

  --color-primary: #6f9ff0;
  --color-primary-hover: #8fb4f4;
  --color-primary-active: #aac5f7;
  --color-primary-highlight: #1c2c47;

  --color-warning: #d98a4a;
  --color-warning-hover: #e0a06a;
  --color-warning-active: #e6b689;
  --color-warning-highlight: #3a2a1c;

  --color-error: #e2637f;
  --color-error-hover: #e8839a;
  --color-error-active: #eea3b3;
  --color-error-highlight: #3a1f27;

  --color-success: #4caf7d;
  --color-success-hover: #6ec296;
  --color-success-active: #8ed3af;
  --color-success-highlight: #1a3327;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 18px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 20px 48px oklch(0 0 0 / 0.5);

  --grid-line: oklch(1 0 0 / 0.06);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0a0e13;
    --color-surface: #10151c;
    --color-surface-2: #141a22;
    --color-surface-offset: #171e27;
    --color-surface-offset-2: #1c242f;
    --color-surface-dynamic: #232c38;
    --color-divider: #1f2731;
    --color-border: #2b3540;
    --color-text: #dde3ea;
    --color-text-muted: #8a94a1;
    --color-text-faint: #5b6570;
    --color-text-inverse: #0a0e13;
    --color-primary: #6f9ff0;
    --color-primary-hover: #8fb4f4;
    --color-primary-active: #aac5f7;
    --color-primary-highlight: #1c2c47;
    --color-warning: #d98a4a;
    --color-warning-hover: #e0a06a;
    --color-warning-active: #e6b689;
    --color-warning-highlight: #3a2a1c;
    --color-error: #e2637f;
    --color-error-hover: #e8839a;
    --color-error-active: #eea3b3;
    --color-error-highlight: #3a1f27;
    --color-success: #4caf7d;
    --color-success-hover: #6ec296;
    --color-success-active: #8ed3af;
    --color-success-highlight: #1a3327;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
    --shadow-md: 0 6px 18px oklch(0 0 0 / 0.4);
    --shadow-lg: 0 20px 48px oklch(0 0 0 / 0.5);
    --grid-line: oklch(1 0 0 / 0.06);
  }
}

body {
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ========================================================================
   Layout primitives
   ======================================================================== */

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.container--narrow {
  max-width: var(--content-narrow);
}
.container--default {
  max-width: var(--content-default);
}

main {
  display: block;
}

section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}
section.section--tight {
  padding-block: clamp(var(--space-8), 5vw, var(--space-16));
}

.section-head {
  margin-bottom: clamp(var(--space-8), 5vw, var(--space-12));
  max-width: 62ch;
}
.section-head--wide {
  max-width: 78ch;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  flex-shrink: 0;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.section-head p {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 60ch;
}

h1,
.h1 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-text);
}
h2,
.h2 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
}
h3,
.h3 {
  font-family: var(--font-display);
  font-weight: 600;
}

.text-muted {
  color: var(--color-text-muted);
}
.text-faint {
  color: var(--color-text-faint);
}
.mono {
  font-family: var(--font-mono);
}

/* ========================================================================
   Header / Nav
   ======================================================================== */

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  z-index: 200;
  border-radius: var(--radius-sm);
}
.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-divider);
  transition:
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(14px);
}
.site-header--hidden {
  transform: translateY(-100%);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}
.brand-mark {
  color: var(--color-primary);
  flex-shrink: 0;
}
.brand-sub {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
  margin-top: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.main-nav a:not(.btn) {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
}
.main-nav a:not(.btn):hover,
.main-nav a:not(.btn)[aria-current='page'] {
  color: var(--color-text);
}
.main-nav a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid oklch(from var(--color-text) l c h / 0.12);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid oklch(from var(--color-text) l c h / 0.12);
  color: var(--color-text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  text-decoration: none;
  white-space: nowrap;
  min-height: 44px;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}
.btn-primary:active {
  background: var(--color-primary-active);
}
.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: oklch(from var(--color-text) l c h / 0.16);
}
.btn-secondary:hover {
  background: var(--color-surface-offset);
  border-color: oklch(from var(--color-text) l c h / 0.24);
}
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding-inline: var(--space-2);
}
.btn-ghost:hover {
  color: var(--color-primary-hover);
}
.btn-block {
  width: 100%;
}
.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Mobile nav drawer */
@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    inset: 0;
    top: 72px;
    z-index: 150;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6) var(--space-5);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    overflow-y: auto;
    transition:
      opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1),
      transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .main-nav ul li {
    border-bottom: 1px solid var(--color-divider);
  }
  .main-nav a {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--text-base);
  }
  .main-nav .header-actions {
    margin-top: var(--space-6);
    flex-direction: column;
    align-items: stretch;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .desktop-only {
    display: none;
  }
}

/* ========================================================================
   Hero
   ======================================================================== */

.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 6vw, var(--space-20));
  overflow: hidden;
  background: var(--color-text);
  color: var(--color-text-inverse);
}
[data-theme='dark'] .hero,
.hero {
  background: #0a0e13;
  color: #f4f6f8;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(1 0 0 / 0.05) 1px, transparent 1px),
    linear-gradient(90deg, oklch(1 0 0 / 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 92%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--space-12);
  align-items: center;
}
.hero-grid > * {
  min-width: 0;
}
.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid oklch(1 0 0 / 0.1);
  box-shadow: var(--shadow-lg);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #9db9ea;
  margin-bottom: var(--space-5);
}
.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: #6f9ff0;
}
.hero h1 {
  font-size: clamp(2.25rem, 1rem + 3.2vw, 3.75rem);
  max-width: 16ch;
  overflow-wrap: break-word;
  color: #f4f6f8;
}
.hero .lede {
  margin-top: var(--space-5);
  font-size: var(--text-lg);
  color: #aab4c2;
  max-width: 46ch;
  font-family: var(--font-body);
  font-weight: 400;
}
.hero-ctas {
  margin-top: var(--space-8);
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.hero .btn-secondary {
  color: #f4f6f8;
  border-color: oklch(1 0 0 / 0.2);
}
.hero .btn-secondary:hover {
  background: oklch(1 0 0 / 0.08);
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-image {
    order: -1;
  }
}

/* ---------- Stat strip ---------- */
.stat-strip {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
  padding-block: var(--space-8);
}
.stat-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.stat-strip .container > * {
  min-width: 0;
}
.stat {
  border-left: 1px solid var(--color-divider);
  padding-left: var(--space-5);
}
.stat:first-child {
  border-left: none;
  padding-left: 0;
}
.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}
@media (max-width: 780px) {
  .stat-strip .container {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6) var(--space-5);
  }
  .stat:nth-child(3) {
    border-left: none;
    padding-left: 0;
  }
}

/* ========================================================================
   Cards & grids
   ======================================================================== */

.grid {
  display: grid;
  gap: var(--space-5);
}
.grid > * {
  min-width: 0;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 620px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.line-icon {
  color: var(--color-primary);
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

/* Product / capability card */
.cap-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
}
.cap-card:hover {
  box-shadow: var(--shadow-md);
  border-color: oklch(from var(--color-primary) l c h / 0.35);
  transform: translateY(-2px);
}
.cap-card .index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.cap-card h3 {
  font-size: var(--text-lg);
  color: var(--color-text);
}
.cap-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.cap-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}
.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-2);
}
.cap-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  margin-top: var(--space-2);
}
.cap-card .card-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-interactive);
}
.cap-card:hover .card-link svg {
  transform: translateX(3px);
}

/* Feature list — asymmetric, avoid 3-col AI pattern */
.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-12);
  align-items: start;
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-divider);
}
.feature-row > * {
  min-width: 0;
}
.feature-row:first-of-type {
  border-top: none;
}
.feature-row .num {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: var(--text-sm);
}
.feature-row h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-2);
  max-width: 22ch;
}
.feature-row .feature-body p {
  color: var(--color-text-muted);
}
.feature-row .feature-body ul {
  margin-top: var(--space-4);
  display: grid;
  gap: var(--space-2);
}
.feature-row .feature-body li {
  display: flex;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.feature-row .feature-body li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  margin-top: 0.6em;
  flex-shrink: 0;
}
@media (max-width: 780px) {
  .feature-row {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* ---------- Process / pipeline ---------- */
.pipeline {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}
.pipeline > * {
  min-width: 0;
}
.pipeline--4 {
  grid-template-columns: repeat(4, 1fr);
}
.pipeline-step {
  padding: var(--space-5) var(--space-4);
  border-right: 1px solid var(--color-divider);
  position: relative;
}
.pipeline-step:last-child {
  border-right: none;
}
.pipeline-step .step-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
}
.pipeline-step h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  margin-top: var(--space-3);
  color: var(--color-text);
}
.pipeline-step p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}
@media (max-width: 1000px) {
  .pipeline {
    grid-template-columns: repeat(3, 1fr);
  }
  .pipeline-step:nth-child(3) {
    border-right: none;
  }
  .pipeline-step:nth-child(n + 4) {
    border-top: 1px solid var(--color-divider);
  }
}
@media (max-width: 620px) {
  .pipeline {
    grid-template-columns: 1fr;
  }
  .pipeline-step {
    border-right: none;
    border-top: 1px solid var(--color-divider);
  }
  .pipeline-step:first-child {
    border-top: none;
  }
}

/* ---------- Spec table ---------- */
.spec-table {
  width: 100%;
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.spec-table th,
.spec-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-divider);
}
.spec-table thead th {
  background: var(--color-surface-offset);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}
.spec-table tbody tr:last-child td {
  border-bottom: none;
}
.spec-table tbody th {
  font-weight: 600;
  color: var(--color-text);
  width: 40%;
  background: var(--color-surface);
}
.spec-table tbody td {
  color: var(--color-text-muted);
  background: var(--color-surface);
}
.table-scroll {
  overflow-x: auto;
}

/* ---------- Badges / status ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}
.badge-success {
  background: var(--color-success-highlight);
  color: var(--color-success);
}
.badge-warning {
  background: var(--color-warning-highlight);
  color: var(--color-warning);
}
.badge-neutral {
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: currentColor;
}

/* ---------- Anchor sub-nav (products page) ---------- */
.product-scroll {
  position: relative;
}
.subnav {
  position: sticky;
  top: 73px;
  z-index: 40;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider);
  overflow-x: auto;
  scrollbar-width: none;
}
.subnav::-webkit-scrollbar {
  display: none;
}
.subnav ul {
  display: flex;
  gap: var(--space-6);
  padding-block: var(--space-3);
  white-space: nowrap;
}
.subnav ul li {
  text-wrap: nowrap;
  max-width: none;
  flex-shrink: 0;
}
.subnav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}
.subnav a:hover {
  color: var(--color-text);
}

/* ---------- Product section block ---------- */
.product-block {
  padding-block: clamp(var(--space-12), 7vw, var(--space-20));
  border-top: 1px solid var(--color-divider);
  scroll-margin-top: 130px;
}
.product-block:first-of-type {
  border-top: none;
}
.product-block-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.product-block-head h2 {
  font-size: var(--text-xl);
}
.product-block-head .index {
  font-family: var(--font-mono);
  color: var(--color-text-faint);
  font-size: var(--text-sm);
}
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
}
.model-grid > * {
  min-width: 0;
}
@media (max-width: 900px) {
  .model-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 620px) {
  .model-grid {
    grid-template-columns: 1fr;
  }
}
.model-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
}
.model-card .model-name {
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.model-card .model-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-top: var(--space-1);
}
.model-card p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* ---------- Solutions scale cards ---------- */
.scale-list {
  display: grid;
  gap: var(--space-4);
}
.scale-card {
  display: grid;
  grid-template-columns: minmax(0, 90px) minmax(0, 1fr) auto;
  gap: var(--space-5);
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}
.scale-card .scale-range {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2);
  text-align: center;
  line-height: 1.3;
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
}
.scale-card h3 {
  font-size: var(--text-base);
  color: var(--color-text);
}
.scale-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}
@media (max-width: 700px) {
  .scale-card {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      'badge title'
      'desc desc';
    gap: var(--space-2) var(--space-4);
  }
  .scale-card .scale-range {
    grid-area: badge;
  }
  .scale-card h3 {
    grid-area: title;
  }
  .scale-card p {
    grid-area: desc;
    margin-top: var(--space-2);
  }
  .scale-card .btn {
    grid-column: 1 / -1;
    margin-top: var(--space-2);
  }
}

/* ---------- Quote / pull text ---------- */
.pull-quote {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-10);
  margin-block: var(--space-4);
}
.pull-quote p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  max-width: 46ch;
  letter-spacing: -0.005em;
}
.pull-quote cite {
  display: block;
  margin-top: var(--space-3);
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--color-text);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}
[data-theme='dark'] .cta-banner,
.cta-banner {
  background: #0f1520;
}
.cta-banner h2 {
  color: #f4f6f8;
  font-size: var(--text-xl);
  max-width: 24ch;
}
.cta-banner p {
  color: #aab4c2;
  margin-top: var(--space-2);
}
.cta-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.cta-banner .btn-secondary {
  color: #f4f6f8;
  border-color: oklch(1 0 0 / 0.2);
}
.cta-banner .btn-secondary:hover {
  background: oklch(1 0 0 / 0.08);
}

/* ========================================================================
   Forms
   ======================================================================== */

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}
.form-grid > * {
  min-width: 0;
}
.form-grid .field-full {
  grid-column: 1 / -1;
}
@media (max-width: 700px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.field .hint {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.field input,
.field select,
.field textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text);
  min-height: 44px;
}
.field textarea {
  min-height: 120px;
  resize: vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
fieldset legend {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding-inline: var(--space-2);
}
.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
}

/* ========================================================================
   Footer
   ======================================================================== */

.site-footer {
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
  padding-block: var(--space-16) var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-8);
}
.footer-grid > * {
  min-width: 0;
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}
.footer-grid h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}
.footer-grid ul {
  display: grid;
  gap: var(--space-2);
}
.footer-grid a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer-grid a:hover {
  color: var(--color-text);
}
.footer-brand p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-top: var(--space-3);
  max-width: 32ch;
}
.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ========================================================================
   Breadcrumb / page intro
   ======================================================================== */

.page-intro {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-8);
  border-bottom: 1px solid var(--color-divider);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-5);
  font-family: var(--font-mono);
}
.breadcrumb a {
  color: var(--color-text-faint);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--color-text-muted);
}
.page-intro h1 {
  font-size: var(--text-2xl);
  max-width: 24ch;
}
.page-intro .lede {
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  font-family: var(--font-body);
  font-weight: 400;
}

/* ========================================================================
   Utility
   ======================================================================== */

.visual-panel {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.divider {
  height: 1px;
  background: var(--color-divider);
  margin-block: var(--space-8);
}
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

.list-check {
  display: grid;
  gap: var(--space-3);
}
.list-check li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.list-check svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-12);
  align-items: center;
}
.two-col > * {
  min-width: 0;
}
@media (max-width: 860px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}
.two-col.reverse .two-col-media {
  order: -1;
}

.contact-strip {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.contact-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.contact-item .line-icon {
  width: 22px;
  height: 22px;
  margin-top: 2px;
}
.contact-item strong {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.contact-item a,
.contact-item span {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  text-decoration: none;
}
.contact-item a:hover {
  color: var(--color-primary);
}
.contact-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-bottom: 2px;
}
.contact-value {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
}
a.contact-item:hover .contact-value {
  color: var(--color-primary);
}