/* Factoriva — Base styles & design tokens */
:root {
  --color-bg: #0a0c0f;
  --color-surface: #111417;
  --color-surface-2: #181c21;
  --color-border: #1e2530;
  --color-primary: #e8a020;
  --color-primary-dark: #c4831a;
  --color-accent: #2e6bf5;
  --color-text: #e8ecf0;
  --color-text-muted: #7a8694;
  --color-steel: #3a4a5c;
  --color-white: #ffffff;

  --color-error: #e07070;
  --color-error-border: #a04444;
  --color-error-bg: rgba(200, 60, 60, 0.15);
  --color-accent-soft: rgba(46, 107, 245, 0.15);

  --font-heading: "Barlow Condensed", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  --radius-sm: 2px;
  --radius-md: 4px;
  --shadow-sm: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.45);
  --max-width: 1200px;
  --nav-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 0;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
}

h3 {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  font-weight: 700;
}

p {
  margin: 0 0 var(--space-md);
}

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

ul {
  margin: 0;
  padding-left: 1.25rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.section {
  padding-block: var(--space-3xl);
}

.section--tight {
  padding-block: var(--space-2xl);
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.section__title {
  margin-bottom: var(--space-lg);
}

.section__intro {
  color: var(--color-text-muted);
  max-width: 42rem;
  margin-bottom: var(--space-xl);
}

/* Diagonal grid hero background */
.bg-grid-diagonal {
  background-color: var(--color-bg);
  background-image: repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 48px,
      rgba(30, 37, 48, 0.35) 48px,
      rgba(30, 37, 48, 0.35) 49px
    ),
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 48px,
      rgba(30, 37, 48, 0.2) 48px,
      rgba(30, 37, 48, 0.2) 49px
    );
}

/* Page hero (inner pages) */
.page-hero {
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  padding-bottom: var(--space-2xl);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  margin-bottom: var(--space-sm);
}

.page-hero p {
  color: var(--color-text-muted);
  max-width: 36rem;
}

/* Two column layouts */
.grid-2 {
  display: grid;
  gap: var(--space-2xl);
  align-items: start;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

/* Horizontal scroll strip (industries) */
.scroll-strip {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  padding-bottom: var(--space-sm);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.scroll-strip::-webkit-scrollbar {
  height: 6px;
}

.scroll-strip::-webkit-scrollbar-thumb {
  background: var(--color-steel);
  border-radius: 3px;
}

@media (min-width: 1024px) {
  .scroll-strip {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    overflow: visible;
  }
}

.scroll-strip__item {
  flex: 0 0 min(220px, 75vw);
  scroll-snap-align: start;
}

@media (min-width: 1024px) {
  .scroll-strip__item {
    flex: none;
  }
}

/* Services page sticky side nav */
.services-layout {
  display: grid;
  gap: var(--space-2xl);
}

@media (min-width: 1024px) {
  .services-layout {
    grid-template-columns: 220px 1fr;
    align-items: start;
  }
}

.services-nav {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-md));
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.services-nav a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.services-nav a:hover,
.services-nav a.is-active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

/* Projects filter */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.is-active {
  background: var(--color-surface-2);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Map placeholder */
.map-placeholder {
  aspect-ratio: 16 / 10;
  background: var(--color-surface-2);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: center;
  padding: var(--space-lg);
}

.contact-office-block {
  margin-bottom: var(--space-lg);
}

.contact-hours {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0;
}

.contact-heading {
  margin-bottom: var(--space-lg);
}

.contact-hint {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  margin: var(--space-xs) 0 0;
}

.mb-md {
  margin-bottom: var(--space-md);
}

.error-hero {
  padding-top: calc(var(--nav-height) + var(--space-4xl));
  padding-bottom: var(--space-4xl);
}

.error-hero .container {
  text-align: center;
}

.error-hero .section__label {
  text-align: center;
}

.error-title {
  font-size: clamp(3rem, 12vw, 6rem);
  margin-bottom: var(--space-lg);
}

.error-lede {
  max-width: 28rem;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
  color: var(--color-text-muted);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

/* Visually hidden */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}