/* ==========================================================================
   OCMT — Design tokens
   Change these values and the whole site updates. You shouldn't need to
   touch anything below this block just to restyle colors, type or spacing.
   ========================================================================== */
:root {
  /* --- Color -----------------------------------------------------------
     ink        = main dark background (volcanic rock)
     ink-soft   = secondary dark tone, used for text on light sections
     paper      = off-white, used for text on dark backgrounds
     accent     = accent color — buttons and small details only,
                  never as a large background (that's why it still reads)
     moss       = muted secondary tone, for quiet labels / borders
     line       = hairline dividers
  */
  --color-ink: #15140f;
  --color-ink-soft: #211f19;
  --color-paper: #f4f0e6;
  --color-accent: #005187;
  --color-accent-on-dark: #4fa3d1; /* lighter tint of --color-accent, used only for text over the dark ink background — #005187 itself is too dark to read there */
  --color-moss: #7c8a76;
  --color-line: rgba(244, 240, 230, 0.14);
  --color-line-dark: rgba(21, 20, 15, 0.12);

  /* --- Type --------------------------------------------------------------
     --font-display : big condensed headlines, uppercase
     --font-body    : reading text (paragraphs, buttons)
     --font-mono    : technical labels — elevations, dates, eyebrows
  */
  --font-display: 'Big Shoulders Display', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* --- Spacing (8px base scale) --- */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;

  /* --- Layout --- */
  --container-width: 1160px;
  --radius: 2px;               /* almost no rounding: technical, not "app" */
  --transition: 220ms ease;
}

/* ==========================================================================
   Reset
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p { margin: 0; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.container {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-2);
}
@media (min-width: 768px) {
  .container { padding-inline: var(--space-4); }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-moss);
}
.eyebrow--dark { color: var(--color-ink-soft); opacity: 0.6; }

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.05;
  margin-top: var(--space-1);
  max-width: 20ch;
}
.section-title--light { color: var(--color-paper); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.9em 1.6em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}
.btn--primary { background: var(--color-accent); color: var(--color-paper); }
.btn--primary:hover { transform: translateY(-2px); }

/* Glass — translucent white, used only on dark/photo backgrounds
   (hero, dark expedition section) where solid orange would compete
   with the image. Keeps the accent color reserved for light sections. */
.btn--glass {
  background: rgba(244, 240, 230, 0.14);
  color: var(--color-paper);
  border-color: rgba(244, 240, 230, 0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.btn--glass:hover { background: rgba(244, 240, 230, 0.22); transform: translateY(-2px); }

.btn--ghost { border-color: rgba(244, 240, 230, 0.4); color: var(--color-paper); }
.btn--ghost:hover { border-color: var(--color-paper); }

.btn--outline { border-color: var(--color-line-dark); color: var(--color-ink); }
.btn--outline:hover { border-color: var(--color-ink); }

.btn--block { display: block; text-align: center; }

/* ==========================================================================
   Navbar (shared across all pages)
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: var(--space-2);
}
.nav__inner {
  max-width: var(--container-width);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
}
/* Logo mark — assets/logo-light.png, recolored to --color-paper so it
   reads on the dark nav and footer. Swap the file to update everywhere. */
.logo-mark {
  height: 26px;
  width: auto;
  display: block;
}
.footer__logo.logo-mark { height: 32px; }

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}
.nav__toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--color-paper);
  transition: transform var(--transition), opacity var(--transition);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__menu {
  position: fixed;
  inset: 0;
  top: 0;
  background: var(--color-ink);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4);
  transform: translateX(100%);
  transition: transform var(--transition);
}
.nav__menu.is-open { transform: translateX(0); }
.nav__link {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.8rem;
  color: var(--color-paper);
  opacity: 0.85;
}
.nav__link:hover,
.nav__link.is-active { opacity: 1; }
.nav__link.is-active { color: var(--color-accent-on-dark); }
.nav__cta {
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--color-accent);
  color: var(--color-paper);
  padding: 0.7em 1.4em;
  border-radius: var(--radius);
  opacity: 1 !important;
}

@media (min-width: 900px) {
  .nav__toggle { display: none; }
  .nav__menu {
    position: static;
    inset: auto;
    background: transparent;
    flex-direction: row;
    align-items: center;
    padding: 0;
    transform: none;
    gap: var(--space-4);
  }
  .nav__link { font-size: 0.95rem; font-family: var(--font-body); font-weight: 500; }
}

/* ==========================================================================
   Hero — homepage only: one headline, one photo
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: linear-gradient(180deg, #1c1a14 0%, var(--color-ink) 70%);
}
.hero__slideshow {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0;
  transition: opacity 1.4s ease;
}
.hero__slide.is-active { opacity: 1; }
/* No auto-advance for people who prefer reduced motion — just the first photo, still */
@media (prefers-reduced-motion: reduce) {
  .hero__slide { transition: none; }
}
/* Signature motif: topographic contour lines, drawn once on load.
   Respects prefers-reduced-motion below. */
.hero__topo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.25;
}
.hero__topo path {
  fill: none;
  stroke: var(--color-paper);
  stroke-width: 1.5;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw 2.4s ease-out forwards;
}
.hero__topo path:nth-child(2) { animation-delay: 0.15s; }
.hero__topo path:nth-child(3) { animation-delay: 0.3s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .hero__topo path { stroke-dashoffset: 0; animation: none; }
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(21,20,15,0.94) 8%, rgba(21,20,15,0.25) 55%, rgba(21,20,15,0.35) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: var(--space-5) var(--space-2) var(--space-5);
  max-width: 760px;
}
@media (min-width: 768px) {
  .hero__content { padding: var(--space-6) var(--space-4); }
}
.hero__title {
  font-family: var(--font-display);
  color: var(--color-paper);
  text-transform: uppercase;
  font-weight: 700;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 0.98;
  margin-top: var(--space-2);
}
.hero__subtitle {
  color: rgba(244, 240, 230, 0.85);
  font-size: 1.05rem;
  max-width: 46ch;
  margin-top: var(--space-2);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* ==========================================================================
   Page header — About / Expeditions / Contact (smaller, no photo)
   ========================================================================== */
.page-header {
  background: var(--color-ink);
  position: relative;
  overflow: hidden;
  padding: calc(var(--space-6) + var(--space-3)) 0 var(--space-5);
}
.page-header__topo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.18;
}
.page-header__topo path {
  fill: none;
  stroke: var(--color-paper);
  stroke-width: 1.5;
}
.page-header__content { position: relative; z-index: 2; }
.page-header__title {
  font-family: var(--font-display);
  color: var(--color-paper);
  text-transform: uppercase;
  font-weight: 700;
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1;
  margin-top: var(--space-1);
  max-width: 20ch;
}
.page-header__subtitle {
  color: rgba(244, 240, 230, 0.8);
  max-width: 52ch;
  margin-top: var(--space-2);
  font-size: 1.05rem;
}

/* ==========================================================================
   Pillars (Home teaser + About full version share this component)
   ========================================================================== */
.pillars { padding-block: var(--space-6); }
.pillars__grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .pillars__grid { grid-template-columns: repeat(3, 1fr); }
}
.pillar {
  border-top: 1px solid var(--color-line-dark);
  padding-top: var(--space-2);
}
.pillar__index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent);
}
.pillar__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.5rem;
  margin-top: var(--space-1);
}
.pillar__text {
  margin-top: var(--space-1);
  color: var(--color-ink-soft);
  opacity: 0.75;
  max-width: 36ch;
}

/* ==========================================================================
   Stats row (About page)
   ========================================================================== */
.stats {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, 1fr);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-line-dark);
}
@media (min-width: 768px) {
  .stats { grid-template-columns: repeat(3, 1fr); }
}
.stat__value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--color-accent);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  opacity: 0.65;
  margin-top: var(--space-1);
}

/* ==========================================================================
   Two-column content block (About page story sections)
   ========================================================================== */
.story {
  padding-block: var(--space-5);
  display: grid;
  gap: var(--space-3);
}
@media (min-width: 900px) {
  .story { grid-template-columns: 0.9fr 1.1fr; gap: var(--space-5); align-items: start; }
}
.story__text {
  color: var(--color-ink-soft);
  opacity: 0.8;
  margin-top: var(--space-2);
  max-width: 54ch;
}
.story__text + .story__text { margin-top: var(--space-2); }

/* ==========================================================================
   Expeditions (teaser on Home, full cards on Expeditions page)
   ========================================================================== */
.expeditions {
  background: var(--color-ink);
  color: var(--color-paper);
  padding-block: var(--space-6);
}
.expeditions__intro {
  color: rgba(244, 240, 230, 0.75);
  max-width: 46ch;
  margin-top: var(--space-2);
}
.peaks {
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
  border-top: 1px solid var(--color-line);
}
.peak {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-block: var(--space-2);
  border-bottom: 1px solid var(--color-line);
}
.peak__name {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(1.2rem, 3vw, 1.8rem);
}
.peak__elevation {
  font-family: var(--font-mono);
  color: var(--color-accent-on-dark);
  font-size: 0.9rem;
}

/* Full expedition cards — Expeditions page */
.exp-cards {
  margin-top: var(--space-5);
  display: flex;
  flex-direction: column;
}
.exp-card {
  display: grid;
  gap: var(--space-1) var(--space-3);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-line);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .exp-card { grid-template-columns: 2.5rem 1fr auto; align-items: baseline; }
}
.exp-card__step {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 0.9rem;
}
.exp-card__name {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
}
.exp-card__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-moss);
  margin-left: var(--space-1);
}
.exp-card__elevation {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 1rem;
  justify-self: start;
}
@media (min-width: 768px) {
  .exp-card__elevation { justify-self: end; }
}
.exp-card__text {
  grid-column: 1 / -1;
  color: rgba(244, 240, 230, 0.72);
  max-width: 60ch;
  margin-top: var(--space-1);
}

/* ==========================================================================
   Community / join section
   ========================================================================== */
.join { padding-block: var(--space-6); }
.join__inner {
  display: grid;
  gap: var(--space-4);
}
@media (min-width: 900px) {
  .join__inner { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}
.join__text {
  margin-top: var(--space-2);
  color: var(--color-ink-soft);
  opacity: 0.75;
  max-width: 44ch;
}
.join__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

/* ==========================================================================
   Contact cards — Contact page
   ========================================================================== */
.contact-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .contact-grid { grid-template-columns: repeat(3, 1fr); }
}
.contact-card {
  border: 1px solid var(--color-line-dark);
  padding: var(--space-3);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}
.contact-card:hover { border-color: var(--color-ink); transform: translateY(-2px); }
.contact-card__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-moss);
}
.contact-card__value {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.4rem;
  margin-top: var(--space-1);
}
.contact-note {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-line-dark);
  color: var(--color-ink-soft);
  opacity: 0.7;
  max-width: 54ch;
}

/* ==========================================================================
   Footer (shared)
   ========================================================================== */
.footer {
  background: var(--color-ink);
  color: var(--color-paper);
  padding-top: var(--space-5);
}
.footer__inner {
  display: grid;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-line);
}
@media (min-width: 768px) {
  .footer__inner { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}
.footer__tagline {
  margin-top: var(--space-1);
  color: rgba(244, 240, 230, 0.6);
  max-width: 28ch;
}
.footer__col { display: flex; flex-direction: column; gap: var(--space-1); }
.footer__heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-moss);
  margin-bottom: var(--space-1);
}
.footer__col a { color: rgba(244, 240, 230, 0.75); }
.footer__col a:hover { color: var(--color-paper); }
.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(244, 240, 230, 0.45);
  padding-block: var(--space-3);
}