/* ===========================================================
   BOOM BELT BUSINESS GROUP Design Tokens
   Industrial steel and brushed metal motif, amber growth accent
   =========================================================== */

:root {
  /* Type scale */
  --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, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6.5vw, 7rem);

  /* Spacing */
  --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;

  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

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

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1280px;
  --content-full: 100%;

  --font-display: 'Bebas Neue', 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'General Sans', 'Inter', sans-serif;
}

:root,
[data-theme='light'] {
  --color-bg: #f0efec;
  --color-surface: #f7f6f3;
  --color-surface-2: #fbfaf8;
  --color-surface-offset: #e6e4de;
  --color-surface-offset-2: #dcd9d1;
  --color-surface-dynamic: #cfccc3;
  --color-divider: #d3d0c8;
  --color-border: #c2beb3;

  --color-text: #17181a;
  --color-text-muted: #55575c;
  --color-text-faint: #92908a;
  --color-text-inverse: #f5f4f1;

  --color-primary: #c85a1e;
  --color-primary-hover: #a34817;
  --color-primary-active: #7d3810;
  --color-primary-highlight: #f0d6c2;

  --color-steel: #3d4046;
  --color-steel-dark: #1c1d20;

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.08);
  --shadow-md: 0 4px 16px oklch(0.2 0.01 80 / 0.12);
  --shadow-lg: 0 16px 40px oklch(0.2 0.01 80 / 0.18);
}

[data-theme='dark'] {
  --color-bg: #121315;
  --color-surface: #191a1d;
  --color-surface-2: #1e1f23;
  --color-surface-offset: #202226;
  --color-surface-offset-2: #26282d;
  --color-surface-dynamic: #303338;
  --color-divider: #2b2d31;
  --color-border: #383a3f;

  --color-text: #e8e7e3;
  --color-text-muted: #a3a19a;
  --color-text-faint: #6b6963;
  --color-text-inverse: #17181a;

  --color-primary: #e07830;
  --color-primary-hover: #ef8f45;
  --color-primary-active: #c46620;
  --color-primary-highlight: #3a2c1c;

  --color-steel: #6b6e75;
  --color-steel-dark: #0a0b0c;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.35);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.45);
  --shadow-lg: 0 16px 40px oklch(0 0 0 / 0.55);
}

/* ===========================================================
   Global type + layout
   =========================================================== */

body {
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
}

section {
  position: relative;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.eyebrow {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.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-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.brand img {
  height: 42px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.main-nav ul {
  display: flex;
  gap: var(--space-6);
}
.main-nav a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: var(--color-surface-offset);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 700;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}
.btn-outline {
  border: 1.5px solid var(--color-text);
  color: var(--color-text);
}
.btn-outline:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

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

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--color-steel-dark);
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.62);
}
.hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, oklch(0.1 0.01 40 / 0.35) 0%, oklch(0.08 0.01 40 / 0.55) 55%, oklch(0.06 0.01 40 / 0.92) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-block: clamp(var(--space-16), 12vw, var(--space-32)) var(--space-16);
  color: var(--color-text-inverse);
}

.hero-eyebrow {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.hero h1 {
  font-size: var(--text-hero);
  line-height: 0.98;
  color: #f7f5f0;
  max-width: 16ch;
  margin-bottom: var(--space-6);
}
.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}

.hero-sub {
  font-family: var(--font-body);
  text-transform: none;
  font-size: var(--text-lg);
  max-width: 46ch;
  color: #d8d6cf;
  margin-bottom: var(--space-8);
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.hero-actions .btn-outline {
  border-color: #f7f5f0;
  color: #f7f5f0;
}
.hero-actions .btn-outline:hover {
  background: #f7f5f0;
  color: var(--color-steel-dark);
}

.hero-strip {
  position: relative;
  z-index: 1;
  border-top: 1px solid oklch(1 0 0 / 0.15);
  padding-block: var(--space-5);
  margin-top: var(--space-16);
}
.hero-strip .container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  justify-content: space-between;
}
.hero-strip-item {
  color: #cfccc4;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}
.hero-strip-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: #f7f5f0;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-1);
}

/* ===========================================================
   Section shell
   =========================================================== */

.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-24));
}
.section-dark {
  background: var(--color-steel-dark);
  color: var(--color-text-inverse);
}
.section-dark .eyebrow { color: var(--color-primary); }
.section-dark h2, .section-dark h3 { color: #f7f5f0; }
.section-dark p { color: #c9c7c0; }

.section-head {
  max-width: 720px;
  margin-bottom: clamp(var(--space-10), 6vw, var(--space-16));
}
.section-head h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-3);
}
.section-head p {
  font-size: var(--text-lg);
  font-family: var(--font-body);
  text-transform: none;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  font-weight: 400;
}
.section-dark .section-head p { color: #c9c7c0; }

/* ===========================================================
   Audience split (two-column)
   =========================================================== */

.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-divider);
  border: 1px solid var(--color-divider);
}
.audience-card {
  background: var(--color-surface);
  padding: clamp(var(--space-8), 5vw, var(--space-12));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.audience-card .eyebrow { font-size: var(--text-xs); }
.audience-card h3 {
  font-size: var(--text-xl);
}
.audience-card p {
  font-family: var(--font-body);
  text-transform: none;
  color: var(--color-text-muted);
  font-weight: 400;
  font-size: var(--text-base);
}
.audience-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.audience-card li {
  font-size: var(--text-sm);
  color: var(--color-text);
  padding-left: var(--space-5);
  position: relative;
}
.audience-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 2px;
  background: var(--color-primary);
}
.audience-card .btn {
  align-self: flex-start;
  margin-top: var(--space-4);
}

/* ===========================================================
   Capability rows (asymmetric image/text)
   =========================================================== */

.capability-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 6vw, var(--space-16));
  align-items: center;
  padding-block: clamp(var(--space-12), 7vw, var(--space-20));
  border-top: 1px solid var(--color-divider);
}
.capability-row:first-of-type {
  border-top: none;
}
.capability-row--reverse .capability-media { order: 2; }
.capability-row--reverse .capability-text { order: 1; }

.capability-media {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: var(--radius-md);
}
.capability-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.capability-number {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: #f7f5f0;
  background: oklch(0.1 0.01 40 / 0.55);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.capability-text .eyebrow { margin-bottom: var(--space-3); }
.capability-text h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.capability-text p {
  font-family: var(--font-body);
  text-transform: none;
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-bottom: var(--space-5);
}
.capability-text .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.capability-text .tag {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}

/* ===========================================================
   Region collective section
   =========================================================== */

.region-section {
  position: relative;
  background: var(--color-steel-dark);
  color: var(--color-text-inverse);
  overflow: hidden;
}
.region-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: center;
}
.region-map-wrap {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid oklch(1 0 0 / 0.1);
}
.region-map-wrap img {
  width: 100%;
  display: block;
}
.region-text .eyebrow { color: var(--color-primary); }
.region-text h2 {
  font-size: var(--text-2xl);
  color: #f7f5f0;
  margin-top: var(--space-3);
  margin-bottom: var(--space-5);
}
.region-text p {
  font-family: var(--font-body);
  text-transform: none;
  font-weight: 400;
  color: #c9c7c0;
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
}
.region-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}
.region-stats div strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
}
.region-stats div span {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ===========================================================
   Ventures grid
   =========================================================== */

.ventures-media {
  aspect-ratio: 16/8;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: clamp(var(--space-10), 6vw, var(--space-14));
}
.ventures-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ventures-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
  border: 1px solid var(--color-divider);
  background: var(--color-divider);
}
.venture-card {
  background: var(--color-surface);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 200px;
}
.venture-index {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
}
.venture-card h4 {
  font-size: var(--text-lg);
  margin-top: auto;
}
.venture-card p {
  font-family: var(--font-body);
  text-transform: none;
  font-weight: 400;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.venture-note {
  margin-top: var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: normal;
}

/* ===========================================================
   Credibility band
   =========================================================== */

.credibility-row {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: center;
}
.credibility-media {
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: var(--radius-md);
}
.credibility-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.credibility-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-top: var(--space-8);
}
.credibility-item {
  border-top: 2px solid var(--color-primary);
  padding-top: var(--space-3);
}
.credibility-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
}
.credibility-item span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ===========================================================
   CTA band
   =========================================================== */

.cta-band {
  background: var(--color-primary);
  color: #1c1204;
  text-align: left;
}
.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.cta-band h2 {
  font-size: var(--text-2xl);
  color: #1c1204;
  max-width: 20ch;
}
.cta-band .btn-primary {
  background: #1c1204;
  color: #f7f5f0;
}
.cta-band .btn-primary:hover {
  background: #000;
}

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

.site-footer {
  background: var(--color-steel-dark);
  color: #c9c7c0;
  padding-block: clamp(var(--space-12), 6vw, var(--space-16)) var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid oklch(1 0 0 / 0.1);
}
.footer-brand img {
  height: 40px;
  margin-bottom: var(--space-4);
}
.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  max-width: 32ch;
}
.footer-col h5 {
  font-family: var(--font-body);
  text-transform: uppercase;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  font-weight: 700;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col a {
  font-size: var(--text-sm);
  color: #c9c7c0;
}
.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer-powered {
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-powered:hover,
.footer-powered:focus-visible {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ===========================================================
   Reveal-on-scroll
   =========================================================== */

[data-reveal] {
  opacity: 0;
  clip-path: inset(12% 0 0 0);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), clip-path 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-reveal].is-visible {
  opacity: 1;
  clip-path: inset(0 0 0 0);
}

/* ===========================================================
   Responsive
   =========================================================== */

@media (max-width: 900px) {
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header .header-actions .btn-primary { display: none; }
  .audience-grid { grid-template-columns: 1fr; }
  .capability-row,
  .capability-row--reverse .capability-media,
  .capability-row--reverse .capability-text {
    grid-template-columns: 1fr;
    order: initial;
  }
  .capability-row { grid-template-columns: 1fr; }
  .region-grid { grid-template-columns: 1fr; }
  .ventures-grid { grid-template-columns: 1fr; }
  .credibility-row { grid-template-columns: 1fr; }
  .credibility-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-band-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { max-width: 100%; }
  .hero-strip .container { gap: var(--space-5); }
}

/* Mobile nav drawer */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-bg);
  display: none;
  flex-direction: column;
  padding: var(--space-6);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-10);
}
.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
}
.mobile-nav-close {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.mobile-nav .header-actions {
  margin-top: var(--space-10);
  flex-direction: column;
  align-items: stretch;
}