/* ============================================================
   CITRION INDUSTRIES — Shared Design System
   Aesthetic: Premium Editorial Minimal (ref: Susanne Kaufmann)
   ============================================================ */

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: "DM Sans", system-ui, -apple-system, sans-serif;
  font-weight: 400;
  background: var(--white);
  color: var(--charcoal);
  line-height: 1.6;
  text-rendering: geometricPrecision;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; }
button { cursor: pointer; font: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  --white:       #ffffff;
  --off-white:   #F5F0EB;
  --charcoal:    #1A1A1A;
  --green:       #2D4A3E;
  --green-light: rgba(45, 74, 62, 0.08);
  --border:      rgba(26, 26, 26, 0.12);
  --border-mid:  rgba(26, 26, 26, 0.18);
  --muted:       rgba(26, 26, 26, 0.55);
  --muted-light: rgba(26, 26, 26, 0.38);

  --max: 1200px;
  --pad: clamp(24px, 5vw, 72px);
  --nav-h: 80px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Typography ───────────────────────────────────────────── */
.font-serif,
h1, h2, h3 {
  font-family: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(52px, 7vw, 96px); line-height: 0.96; }
h2 { font-size: clamp(36px, 4.5vw, 60px); line-height: 1.0; }
h3 { font-size: clamp(22px, 2.8vw, 32px); line-height: 1.1; }

.eyebrow {
  font-family: "DM Sans", sans-serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.lead {
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.65;
  color: var(--muted);
  font-weight: 300;
}

/* ── Layout ───────────────────────────────────────────────── */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section {
  padding: clamp(80px, 10vw, 140px) 0;
}

.section--sm {
  padding: clamp(52px, 7vw, 96px) 0;
}

/* ── Skip Link ────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: 16px;
  top: 16px;
  padding: 10px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  font-size: 13px;
  transform: translateY(-200%);
  transition: transform 200ms var(--ease);
  z-index: 9999;
}
.skip-link:focus { transform: translateY(0); outline: 2px solid var(--green); }

/* ── Navigation ───────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 400ms var(--ease), border-color 400ms var(--ease);
  background: transparent;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Nav on non-hero pages — always solid */
.site-header.solid {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  width: 100%;
}

.nav-logo {
  font-family: "DM Sans", sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--charcoal);
  transition: color 300ms var(--ease);
}

/* On transparent hero, logo in white */
.site-header:not(.scrolled):not(.solid) .nav-logo,
.site-header:not(.scrolled):not(.solid) .nav-links a,
.site-header:not(.scrolled):not(.solid) .nav-hamburger span {
  color: rgba(255,255,255,0.9);
}
.site-header:not(.scrolled):not(.solid) .nav-hamburger span {
  background: rgba(255,255,255,0.9);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--charcoal);
  position: relative;
  padding: 4px 0;
  transition: color 250ms var(--ease);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 280ms var(--ease);
}

.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 8px 0;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  height: 1px;
  background: var(--charcoal);
  transition: transform 300ms var(--ease), opacity 200ms var(--ease), width 300ms var(--ease);
  width: 24px;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms var(--ease);
}

.nav-mobile.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.nav-mobile a {
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(32px, 6vw, 52px);
  letter-spacing: -0.01em;
  color: var(--charcoal);
  transition: color 200ms var(--ease);
}

.nav-mobile a:hover { color: var(--green); }

/* ── Hero — Full Bleed ────────────────────────────────────── */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(56px, 8vw, 100px);
  overflow: hidden;
  background: var(--charcoal);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('images/banner_image.png');
  background-size: cover;
  background-position: center;
  background-color: var(--charcoal);
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

/* Dark overlay gradient — fades to near-black at bottom */
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.5) 0%,
    rgba(0, 0, 0, 0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-content .eyebrow {
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
  display: block;
}

.hero-content h1 {
  color: var(--white);
  max-width: 12ch;
  margin-bottom: 24px;
}

.hero-content .lead {
  color: rgba(255,255,255,0.7);
  max-width: 42ch;
  margin-bottom: 0;
}

.hero-scroll {
  position: absolute;
  bottom: clamp(28px, 4vw, 48px);
  right: var(--pad);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.5);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.3);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: "";
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.7);
  animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* ── Editorial Grid (3-column pillars) ────────────────────── */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pillar {
  background: var(--white);
  padding: clamp(40px, 5vw, 72px) clamp(28px, 3.5vw, 52px);
  transition: background 300ms var(--ease);
}

.pillar:hover { background: var(--off-white); }

.pillar-number {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted-light);
  text-transform: uppercase;
  margin-bottom: 40px;
  display: block;
}

.pillar h3 {
  font-size: clamp(28px, 3vw, 40px);
  margin-bottom: 20px;
  color: var(--charcoal);
}

.pillar p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 34ch;
}

/* ── Image Placeholder ────────────────────────────────────── */
.img-placeholder {
  background: var(--off-white);
  position: relative;
  overflow: hidden;
}

.img-placeholder img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* Aspect ratio variants */
.img-placeholder--landscape { padding-bottom: 62%; }
.img-placeholder--portrait  { padding-bottom: 125%; }
.img-placeholder--square    { padding-bottom: 100%; }
.img-placeholder--wide      { padding-bottom: 44%; }

/* ── Section Divider Header ───────────────────────────────── */
.section-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: clamp(40px, 5vw, 64px);
}

.section-label .eyebrow { color: var(--muted-light); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "DM Sans", sans-serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 400;
  padding: 14px 28px;
  border: 1px solid var(--charcoal);
  background: transparent;
  color: var(--charcoal);
  cursor: pointer;
  transition: background 280ms var(--ease), color 280ms var(--ease);
}

.btn:hover {
  background: var(--charcoal);
  color: var(--white);
}

.btn--light {
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
}

.btn--light:hover {
  background: var(--white);
  color: var(--charcoal);
}

.btn--green {
  border-color: var(--green);
  background: var(--green);
  color: var(--white);
}

.btn--green:hover {
  background: #1e3329;
  border-color: #1e3329;
}

/* ── Two-column editorial split ───────────────────────────── */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}

.split--reverse { direction: rtl; }
.split--reverse > * { direction: ltr; }

.split-text { display: flex; flex-direction: column; gap: 24px; }

.split-text .eyebrow { margin-bottom: 4px; }

.split-text p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

/* ── Stat / Large Metric ──────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.stat-item {
  background: var(--white);
  padding: clamp(32px, 4vw, 56px) clamp(24px, 3vw, 44px);
}

.stat-item:hover { background: var(--off-white); }

.stat-number {
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(44px, 6vw, 80px);
  font-weight: 400;
  line-height: 1;
  color: var(--charcoal);
  letter-spacing: -0.03em;
  display: block;
  margin-bottom: 10px;
}

.stat-label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}

.stat-desc {
  font-size: 14px;
  color: var(--muted-light);
  line-height: 1.6;
}

/* ── Thin horizontal rule ─────────────────────────────────── */
.hr { height: 1px; background: var(--border); margin: 0; border: none; }

/* ── Page Hero (non-fullscreen) ───────────────────────────── */
.page-hero {
  padding-top: calc(var(--nav-h) + clamp(52px, 8vw, 96px));
  padding-bottom: clamp(52px, 8vw, 96px);
  background: var(--off-white);
  border-bottom: 1px solid var(--border);
}

.page-hero .eyebrow { margin-bottom: 20px; display: block; }
.page-hero h1 { max-width: 18ch; margin-bottom: 24px; }

/* ── Team Cards ───────────────────────────────────────────── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.team-card {
  background: var(--white);
  padding: clamp(32px, 4vw, 48px);
  transition: background 280ms var(--ease);
}

.team-card:hover { background: var(--off-white); }

.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--off-white);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 24px;
  position: relative;
}

.team-avatar img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}

.team-name {
  font-family: "Cormorant Garamond", serif;
  font-size: 22px;
  font-weight: 400;
  margin-bottom: 6px;
}

.team-role {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}

/* ── Report / Document row ────────────────────────────────── */
.doc-list { display: flex; flex-direction: column; }

.doc-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.doc-row:first-child { border-top: 1px solid var(--border); }

.doc-row-info { display: flex; flex-direction: column; gap: 4px; }

.doc-row-title {
  font-family: "Cormorant Garamond", serif;
  font-size: 20px;
}

.doc-row-meta {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted-light);
  text-transform: uppercase;
}

/* ── Prose / body copy ────────────────────────────────────── */
.prose {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 58ch;
}

.prose p + p { margin-top: 18px; }

/* ── Info grid (key-value pairs) ──────────────────────────── */
.info-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
}

.info-row-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}

.info-row-item:last-child { border-bottom: none; }

.info-row-label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-light);
}

.info-row-value {
  font-size: 15px;
  color: var(--charcoal);
}

/* ── Timeline ─────────────────────────────────────────────── */
.timeline { display: flex; flex-direction: column; gap: 0; }

.timeline-item {
  display: grid;
  grid-template-columns: 1px 1fr;
  gap: 0 32px;
  padding-bottom: 48px;
  position: relative;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-line {
  background: var(--border);
  position: relative;
}

.timeline-line::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--border-mid);
  background: var(--white);
  box-shadow: 0 0 0 3px var(--white);
}

.timeline-item:last-child .timeline-line { background: transparent; }

.timeline-body { padding-top: 0; }

.timeline-step {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-light);
  margin-bottom: 8px;
  display: block;
}

.timeline-title {
  font-family: "Cormorant Garamond", serif;
  font-size: 22px;
  font-weight: 400;
  margin-bottom: 10px;
}

.timeline-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  padding: clamp(52px, 7vw, 80px) 0 clamp(32px, 4vw, 48px);
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: end;
}

.footer-brand {
  font-family: "DM Sans", sans-serif;
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--charcoal);
  margin-bottom: 16px;
  display: block;
}

.footer-copy {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

.footer-copy a {
  color: inherit;
  border-bottom: 1px solid var(--border-mid);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.footer-copy a:hover { color: var(--charcoal); border-color: var(--charcoal); }

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.footer-links a {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: color 200ms var(--ease);
}

.footer-links a:hover { color: var(--charcoal); }

/* ── Fade-in Animations ───────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up.delay-1 { transition-delay: 120ms; }
.fade-up.delay-2 { transition-delay: 240ms; }
.fade-up.delay-3 { transition-delay: 360ms; }
.fade-up.delay-4 { transition-delay: 480ms; }

/* ── Accessibility ────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .pillars-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .split--reverse { direction: ltr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  :root { --nav-h: 64px; }

  h1 { font-size: clamp(40px, 12vw, 60px); }

  .stat-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }

  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { align-items: flex-start; }

  .info-row-item { grid-template-columns: 1fr; gap: 6px; }
}

/* ── Reduced Motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .fade-up { opacity: 1; transform: none; }
}