/* ========================
   1865 GROUP — DESIGN TOKENS
   Dark, authoritative holding company
   Palette: Deep charcoal + warm gold accent
   ======================== */

:root,
[data-theme='dark'] {
  /* 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(3rem, 0.5rem + 7vw, 8rem);

  /* 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;

  /* Surfaces — Deep charcoal */
  --color-bg: #0d0d0d;
  --color-surface: #141414;
  --color-surface-2: #1a1a1a;
  --color-surface-offset: #111111;
  --color-surface-offset-2: #1e1e1e;
  --color-surface-dynamic: #252525;
  --color-divider: #2a2a2a;
  --color-border: #333333;

  /* Text */
  --color-text: #e8e6e1;
  --color-text-muted: #8a8880;
  --color-text-faint: #5a5955;

  /* Primary Accent — Warm Gold */
  --color-primary: #c9a84c;
  --color-primary-hover: #ddb95a;
  --color-primary-active: #b8963f;
  --color-primary-highlight: #2a2418;

  /* Fonts */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Switzer', 'Helvetica Neue', sans-serif;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

[data-theme='light'] {
  --color-bg: #f5f3ee;
  --color-surface: #faf9f6;
  --color-surface-2: #ffffff;
  --color-surface-offset: #edeae3;
  --color-surface-offset-2: #e5e2db;
  --color-surface-dynamic: #ddd9d1;
  --color-divider: #d4d0c8;
  --color-border: #c8c4bc;
  --color-text: #1a1917;
  --color-text-muted: #6b6960;
  --color-text-faint: #a5a39c;
  --color-primary: #8b6f2a;
  --color-primary-hover: #6d5620;
  --color-primary-active: #54421a;
  --color-primary-highlight: #f0e9d6;
  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.08);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.1);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.14);
}

/* ========================
   LAYOUT
   ======================== */

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--space-8); }
}

/* ========================
   HEADER / NAV
   ======================== */

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid oklch(from var(--color-border) l c h / 0.3);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.header__nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
  transition: color var(--transition-interactive);
  position: relative;
}

.header__nav a:hover,
.header__nav a.active {
  color: var(--color-primary);
}

.header__nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--color-primary);
}

.theme-toggle {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-primary);
  background: var(--color-surface-dynamic);
}

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  place-items: center;
  color: var(--color-text);
}

@media (max-width: 767px) {
  .header__nav { display: none; }
  .header__nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-6) var(--space-4);
    gap: var(--space-4);
  }
  .nav-toggle { display: grid; }
}

/* ========================
   PAGE HERO (Shared across pages)
   ======================== */

.page-hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.page-hero--full { min-height: 100vh; }

.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.page-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    oklch(from var(--color-bg) l c h / 0.7) 0%,
    oklch(from var(--color-bg) l c h / 0.45) 40%,
    oklch(from var(--color-bg) l c h / 0.85) 100%);
}

[data-theme='light'] .page-hero__overlay {
  background: linear-gradient(180deg,
    oklch(0.15 0 0 / 0.65) 0%,
    oklch(0.15 0 0 / 0.5) 40%,
    oklch(0.15 0 0 / 0.75) 100%);
}

[data-theme='light'] .page-hero__content {
  --color-text: #f0ede8;
  --color-text-muted: #c5c2bb;
  --color-text-faint: #9a978f;
  --color-primary: #d4b455;
}

.page-hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin-inline: auto;
  padding: var(--space-24) var(--space-4) var(--space-16);
}

.page-hero__eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.05;
  margin-bottom: var(--space-6);
}

.page-hero__title span { color: var(--color-primary); }

.page-hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.7;
}

.page-hero__scroll {
  margin-top: var(--space-12);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.page-hero__scroll:hover { color: var(--color-primary); }

.page-hero__scroll svg {
  animation: float 2s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* Sub-page hero (shorter) */
.page-hero--sub {
  min-height: 45vh;
}

.page-hero--sub .page-hero__title {
  font-size: var(--text-3xl);
}

/* ========================
   SECTIONS
   ======================== */

.section {
  padding: clamp(var(--space-12), 8vw, var(--space-32)) 0;
}

.section--surface {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.section__eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.section__text {
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.8;
}

.section__header {
  text-align: center;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}

/* Gold line */
.gold-line {
  width: 48px; height: 2px;
  background: var(--color-primary);
  margin-bottom: var(--space-6);
}

.gold-line--center { margin-inline: auto; }

/* ========================
   ABOUT GRID
   ======================== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

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

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.stat {
  padding: var(--space-4);
  border-left: 2px solid var(--color-primary);
}

.stat__number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.about-visual { position: relative; }

.about-visual__line {
  position: absolute;
  top: -20px; right: -20px;
  width: 120px; height: 120px;
  border: 1px solid var(--color-primary);
  opacity: 0.3;
  border-radius: var(--radius-sm);
}

/* ========================
   VENTURE CARDS (Grid)
   ======================== */

.ventures__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .ventures__grid { grid-template-columns: repeat(2, 1fr); }
}

.venture-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  text-decoration: none;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.venture-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.venture-card:active { transform: translateY(0); }

.venture-card__image {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.venture-card__image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.venture-card:hover .venture-card__image img {
  transform: scale(1.04);
}

.venture-card__content {
  padding: var(--space-5) var(--space-6) var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.venture-card__tag {
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.venture-card__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}

.venture-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
}

.venture-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  margin-top: var(--space-4);
  transition: gap var(--transition-interactive);
}

.venture-card:hover .venture-card__link { gap: var(--space-3); }

.venture-card__status {
  position: absolute;
  top: var(--space-4); right: var(--space-4);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  backdrop-filter: blur(8px);
}

.venture-card__status--live {
  background: oklch(0.3 0.08 150 / 0.8);
  color: #7ddf7d;
}

.venture-card__status--coming {
  background: oklch(0.25 0.06 60 / 0.8);
  color: var(--color-primary);
}

/* ========================
   VENTURE DETAIL PAGE
   ======================== */

.venture-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 768px) {
  .venture-detail { grid-template-columns: 1fr 1fr; gap: var(--space-16); }
  .venture-detail--reverse > :first-child { order: 2; }
}

.venture-detail__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.venture-detail__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}

.venture-detail__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Feature list */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.feature-list li svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-primary);
}

/* CTA button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-bg);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}

.btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary-highlight);
}

/* ========================
   QUOTE / DIVIDER
   ======================== */

.divider-quote {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
  text-align: center;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.divider-quote__text {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  font-style: italic;
  max-width: 800px;
  margin-inline: auto;
  line-height: 1.3;
}

.divider-quote__text span { color: var(--color-primary); }

/* ========================
   VALUES / PILLARS
   ======================== */

.pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .pillars { grid-template-columns: repeat(3, 1fr); }
}

.pillar {
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
}

.pillar__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: var(--color-primary-highlight);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.pillar__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.pillar__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ========================
   CONTACT PAGE
   ======================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .contact-grid { grid-template-columns: repeat(3, 1fr); }
}

.contact-card {
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
  text-align: center;
}

.contact-card__icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  background: var(--color-primary-highlight);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  margin: 0 auto var(--space-4);
}

.contact-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.contact-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.contact-card__text a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

/* ========================
   FOOTER
   ======================== */

.footer {
  padding: clamp(var(--space-12), 6vw, var(--space-20)) 0;
  border-top: 1px solid var(--color-divider);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

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

.footer__brand { max-width: 360px; }

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
}

.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer__heading {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  font-weight: 500;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ========================
   SCROLL ANIMATIONS
   ======================== */

.fade-in { opacity: 1; }

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 100%;
  }
}

@keyframes reveal-fade { to { opacity: 1; } }

.js-reveal {
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
}

.js-reveal.visible { opacity: 1; }

/* ========================
   TIMELINE (About page)
   ======================== */

.timeline {
  position: relative;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: 15px;
  width: 1px;
  background: var(--color-divider);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-8);
}

.timeline__item:last-child { padding-bottom: 0; }

.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-8) + 10px);
  top: 4px;
  width: 12px; height: 12px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
}

.timeline__year {
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.timeline__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.timeline__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ========================
   BREADCRUMB
   ======================== */

.breadcrumb {
  position: relative;
  z-index: 1;
  padding-top: calc(72px + var(--space-4));
  padding-bottom: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.breadcrumb a {
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

.breadcrumb span { color: var(--color-text-muted); }