/* ============================================================
   OLLINS OIL & GAS – Design System
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&family=Open+Sans:wght@400;500;600&display=swap');

/* --- Custom Properties --- */
:root {
  --color-primary-900: #0a1628;
  --color-primary-800: #0d1e38;
  --color-primary-700: #112548;
  --color-primary-600: #162d58;
  --color-primary-500: #1c3668;
  --color-primary-400: #2a4a82;

  --color-accent-900: #7a2a00;
  --color-accent-800: #a83800;
  --color-accent-700: #c84800;
  --color-accent-600: #e05200;
  --color-accent-500: #e8621a;
  --color-accent-400: #f07830;
  --color-accent-300: #f59050;
  --color-accent-200: #f9b882;
  --color-accent-100: #fce8d4;

  --color-gold-500: #f5a623;
  --color-gold-400: #f7b84a;
  --color-gold-300: #f9cb72;

  --color-neutral-900: #111827;
  --color-neutral-800: #1f2937;
  --color-neutral-700: #374151;
  --color-neutral-600: #4b5563;
  --color-neutral-500: #6b7280;
  --color-neutral-400: #9ca3af;
  --color-neutral-300: #d1d5db;
  --color-neutral-200: #e5e7eb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-50:  #f9fafb;

  --color-success-500: #10b981;
  --color-warning-500: #f59e0b;
  --color-error-500:   #ef4444;

  --color-bg: #ffffff;
  --color-surface: var(--color-neutral-50);
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-600);
  --color-border: var(--color-neutral-200);

  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  --space-1:  0.5rem;
  --space-2:  1rem;
  --space-3:  1.5rem;
  --space-4:  2rem;
  --space-5:  2.5rem;
  --space-6:  3rem;
  --space-8:  4rem;
  --space-10: 5rem;
  --space-12: 6rem;

  --max-width: 1280px;
  --nav-height: 80px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.08);
  --shadow-xl: 0 20px 50px rgba(0,0,0,.15);

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 9999px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
}
.section-label {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-accent-500);
  margin-bottom: var(--space-2);
}
.section-title {
  font-size: var(--text-3xl);
  color: var(--color-primary-800);
  margin-bottom: var(--space-2);
}
.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 640px;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}
.section          { padding: var(--space-12) 0; }
.section--dark    { background: var(--color-primary-800); color: #fff; }
.section--surface { background: var(--color-surface); }
.section--accent  { background: var(--color-accent-500); color: #fff; }

.section-header           { margin-bottom: var(--space-8); }
.section-header--center   { text-align: center; }
.section-header--center .section-subtitle { margin: 0 auto; }

.grid   { display: grid; gap: var(--space-4); }
.grid-2 { grid-template-columns: repeat(2,1fr); }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.grid-4 { grid-template-columns: repeat(4,1fr); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: .75rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  transition: all var(--transition-base);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent-500);
  color: #fff;
  box-shadow: 0 4px 14px rgba(232,98,26,.4);
}
.btn-primary:hover {
  background: var(--color-accent-600);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232,98,26,.5);
}
.btn-outline {
  border: 2px solid rgba(255,255,255,.8);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255,255,255,.15);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-outline-dark {
  border: 2px solid var(--color-primary-800);
  color: var(--color-primary-800);
}
.btn-outline-dark:hover {
  background: var(--color-primary-800);
  color: #fff;
  transform: translateY(-2px);
}
.btn-white {
  background: #fff;
  color: var(--color-accent-600);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  padding: .875rem 2rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.btn-white:hover { background: var(--color-primary-900); color: #fff; transform: translateY(-2px); }
.btn-sm { padding: .5rem 1.25rem; font-size: var(--text-xs); }

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background var(--transition-slow), box-shadow var(--transition-slow);
}
.nav.nav--transparent { background: transparent; }
.nav.nav--solid {
  background: var(--color-primary-900);
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
}
.nav__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
  gap: var(--space-3);
}
.nav__logo { flex-shrink: 0; display: flex; align-items: center; }
.nav__logo img { height: 52px; width: auto; object-fit: contain; }
.nav__links { display: flex; align-items: center; gap: 0; margin-left: auto; position: static; }

.nav__item { position: relative; }
.nav__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 .875rem;
  height: var(--nav-height);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255,255,255,.9);
  transition: color var(--transition-fast);
  white-space: nowrap;
}
.nav__link:hover, .nav__link.active { color: var(--color-gold-400); }
.nav__link svg { width: 14px; height: 14px; flex-shrink: 0; transition: transform var(--transition-fast); }
.nav__item:hover .nav__link svg { transform: rotate(180deg); }

.nav__dropdown {
  position: absolute;
  top: 100%; left: 0;
  min-width: 240px;
  background: var(--color-primary-900);
  border-top: 3px solid var(--color-accent-500);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-base);
  z-index: 100;
}
.nav__item:hover .nav__dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav__dropdown a {
  display: block;
  padding: .75rem 1.25rem;
  font-size: var(--text-sm);
  color: rgba(255,255,255,.8);
  transition: all var(--transition-fast);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.nav__dropdown a:hover { color: var(--color-gold-400); background: rgba(255,255,255,.05); padding-left: 1.5rem; }
.nav__dropdown-group-label {
  display: block;
  padding: .625rem 1.25rem .25rem;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-accent-400);
}
.nav__cta { margin-left: var(--space-2); flex-shrink: 0; }

/* ============================================================
   MEGA MENU (Services)
   ============================================================ */
.nav__mega {
  position: fixed;
  top: var(--nav-height);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: min(900px, 98vw);
  background: var(--color-primary-900);
  border-top: 3px solid var(--color-accent-500);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 200;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.nav__item:hover .nav__mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav__mega-col {
  padding: 1.25rem 0;
  border-right: 1px solid rgba(255,255,255,.07);
}
.nav__mega-col:last-child { border-right: none; }
.nav__mega-heading {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem 1.25rem .75rem;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent-400);
  border-bottom: 1px solid rgba(255,255,255,.07);
  margin-bottom: .25rem;
}
.nav__mega-heading a {
  color: var(--color-accent-400) !important;
  padding: 0 !important;
  border: none !important;
  background: none !important;
  font-size: var(--text-xs) !important;
  transition: color var(--transition-fast) !important;
}
.nav__mega-heading a:hover { color: var(--color-gold-400) !important; padding-left: 0 !important; }
.nav__mega-col a:not(.nav__mega-heading a) {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .55rem 1.25rem;
  font-size: var(--text-sm);
  color: rgba(255,255,255,.78);
  transition: all var(--transition-fast);
  border-bottom: none;
}
.nav__mega-col a:not(.nav__mega-heading a)::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent-500);
  flex-shrink: 0;
  opacity: .5;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.nav__mega-col a:not(.nav__mega-heading a):hover {
  color: var(--color-gold-400);
  background: rgba(255,255,255,.04);
  padding-left: 1.5rem;
}
.nav__mega-col a:not(.nav__mega-heading a):hover::before { opacity: 1; transform: scale(1.4); }

/* Mobile mega accordion */
.nav__mobile-accordion-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: .875rem 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: rgba(255,255,255,.9);
  border-bottom: 1px solid rgba(255,255,255,.08);
  text-align: left;
}
.nav__mobile-accordion-toggle svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: rgba(255,255,255,.5);
}
.nav__mobile-accordion-toggle.open svg { transform: rotate(180deg); }
.nav__mobile-accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.nav__mobile-accordion-panel.open { max-height: 800px; }
.nav__mobile-category-label {
  display: block;
  padding: .75rem 1rem .3rem;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-accent-400);
}
.nav__mobile-accordion-panel a {
  display: block;
  padding: .45rem 1rem .45rem 1.5rem;
  font-size: var(--text-sm);
  color: rgba(255,255,255,.7);
  border-bottom: none;
  transition: color var(--transition-fast);
}
.nav__mobile-accordion-panel a:hover { color: var(--color-gold-400); }

/* Hamburger */
.nav__hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; margin-left: auto; }
.nav__hamburger span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: all var(--transition-base); }
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height); left: 0; right: 0; bottom: 0;
  background: var(--color-primary-900);
  overflow-y: auto;
  z-index: 999;
  padding: var(--space-4);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
}
.nav__mobile.open { transform: translateX(0); }
.nav__mobile-link {
  display: block;
  padding: .875rem 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: rgba(255,255,255,.9);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav__mobile-link:hover { color: var(--color-gold-400); }
.nav__mobile-sub { padding: .5rem 0 .5rem 1rem; border-left: 2px solid var(--color-accent-500); margin: .25rem 0 .75rem; }
.nav__mobile-sub a { display: block; padding: .4rem 0; font-size: var(--text-base); color: rgba(255,255,255,.7); }
.nav__mobile-sub a:hover { color: var(--color-gold-400); }
.nav__mobile-group-label { display: block; padding: .5rem 0 .25rem; font-size: var(--text-xs); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--color-accent-400); }

/* ============================================================
   HERO SLIDER
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}
.hero__slide.active { opacity: 1; }
.hero__slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.06);
  transition: transform 7s ease;
}
.hero__slide.active .hero__slide-bg { transform: scale(1); }
.hero__slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,.88) 0%, rgba(10,22,40,.55) 55%, rgba(10,22,40,.3) 100%);
}
.hero__content {
  position: relative;
  z-index: 10;
  height: 100%;
  display: flex;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
  padding-top: var(--nav-height);
}
.hero__text { max-width: 700px; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: rgba(232,98,26,.18);
  border: 1px solid rgba(232,98,26,.45);
  color: var(--color-gold-300);
  padding: .375rem 1rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  opacity: 0;
  transform: translateY(20px);
  transition: all .6s ease .15s;
}
.hero__slide.active .hero__badge { opacity: 1; transform: translateY(0); }

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: #fff;
  line-height: 1.15;
  margin-bottom: var(--space-3);
  opacity: 0;
  transform: translateY(24px);
  transition: all .65s ease .3s;
}
.hero__slide.active .hero__title { opacity: 1; transform: translateY(0); }
.hero__title span { color: var(--color-accent-400); }

.hero__desc {
  font-size: var(--text-lg);
  color: rgba(255,255,255,.82);
  line-height: 1.7;
  margin-bottom: var(--space-5);
  opacity: 0;
  transform: translateY(20px);
  transition: all .6s ease .48s;
}
.hero__slide.active .hero__desc { opacity: 1; transform: translateY(0); }

.hero__actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(16px);
  transition: all .6s ease .62s;
}
.hero__slide.active .hero__actions { opacity: 1; transform: translateY(0); }

.hero__controls {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.hero__dot {
  width: 8px; height: 8px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.4);
  cursor: pointer;
  transition: all var(--transition-base);
}
.hero__dot.active { width: 28px; background: var(--color-accent-500); }

.hero__arrows {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-3);
  z-index: 20;
  pointer-events: none;
}
.hero__arrow {
  pointer-events: all;
  width: 48px; height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(4px);
}
.hero__arrow:hover { background: var(--color-accent-500); border-color: var(--color-accent-500); transform: scale(1.08); }

.hero__scroll {
  position: absolute;
  bottom: 44px; right: var(--space-4);
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.6);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,.6), transparent);
  animation: scrollLine 1.6s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { opacity: 1; transform: scaleY(1);   transform-origin: top; }
  100% { opacity: 0; transform: scaleY(0);   transform-origin: top; }
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar { background: var(--color-primary-900); padding: var(--space-8) 0; }
.stats-bar__grid { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-4); text-align: center; }
.stats-bar__item { position: relative; }
.stats-bar__item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0; top: 20%; height: 60%; width: 1px;
  background: rgba(255,255,255,.12);
}
.stats-bar__number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-accent-400);
  line-height: 1;
  margin-bottom: .25rem;
}
.stats-bar__label { font-size: var(--text-sm); color: rgba(255,255,255,.65); font-weight: 500; }

/* ============================================================
   ABOUT TEASER
   ============================================================ */
.about-teaser { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-10); align-items: center; }
.about-teaser__images { position: relative; height: 480px; }
.about-teaser__img-main {
  position: absolute;
  top: 0; left: 0;
  width: 74%; height: 84%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}
.about-teaser__img-accent {
  position: absolute;
  bottom: 0; right: 0;
  width: 54%; height: 54%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 4px solid #fff;
}
.about-teaser__badge {
  position: absolute;
  top: 50%; left: 62%;
  transform: translate(-50%, -50%);
  background: var(--color-accent-500);
  color: #fff;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-lg);
  z-index: 5;
}
.about-teaser__badge-num { font-family: var(--font-heading); font-size: var(--text-4xl); font-weight: 700; line-height: 1; }
.about-teaser__badge-text { font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; margin-top: 4px; }
.about-teaser__content { padding-left: var(--space-4); }

.values-list { display: flex; flex-direction: column; gap: var(--space-3); margin: var(--space-4) 0; }
.value-item { display: flex; align-items: flex-start; gap: var(--space-2); }
.value-item__icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-accent-100);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--color-accent-600);
  font-size: 18px;
}
.value-item__title { font-family: var(--font-heading); font-size: var(--text-sm); font-weight: 700; color: var(--color-primary-800); margin-bottom: 2px; }
.value-item__desc { font-size: var(--text-sm); color: var(--color-text-secondary); }

/* ============================================================
   SERVICE CARDS
   ============================================================ */
.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  display: flex; flex-direction: column;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card__img-wrap { overflow: hidden; position: relative; }
.service-card__img { height: 220px; object-fit: cover; width: 100%; transition: transform var(--transition-slow); }
.service-card:hover .service-card__img { transform: scale(1.05); }
.service-card__tag {
  position: absolute;
  top: var(--space-2); left: var(--space-2);
  background: var(--color-accent-500);
  color: #fff;
  padding: .25rem .75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.service-card__body { padding: var(--space-4); flex: 1; display: flex; flex-direction: column; }
.service-card__title { font-size: var(--text-xl); font-family: var(--font-heading); font-weight: 700; color: var(--color-primary-800); margin-bottom: var(--space-1); }
.service-card__desc { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.65; flex: 1; margin-bottom: var(--space-3); }
.service-card__link { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-heading); font-size: var(--text-sm); font-weight: 700; color: var(--color-accent-500); transition: gap var(--transition-fast); }
.service-card__link:hover { gap: 10px; }

/* ============================================================
   WHY CHOOSE
   ============================================================ */
.why-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-4); }
.why-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: all var(--transition-base);
}
.why-card:hover { background: rgba(255,255,255,.1); border-color: var(--color-accent-500); transform: translateY(-4px); }
.why-card__icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: rgba(232,98,26,.18);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-3);
  color: var(--color-accent-400);
}
.why-card__num { font-size: var(--text-xs); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--color-accent-400); margin-bottom: .5rem; }
.why-card__title { font-family: var(--font-heading); font-size: var(--text-lg); font-weight: 700; color: #fff; margin-bottom: var(--space-1); }
.why-card__desc { font-size: var(--text-sm); color: rgba(255,255,255,.65); line-height: 1.65; }

/* ============================================================
   PILLAR CARDS
   ============================================================ */
.pillar-card { position: relative; border-radius: var(--radius-xl); overflow: hidden; height: 380px; cursor: pointer; }
.pillar-card__bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform var(--transition-slow); }
.pillar-card:hover .pillar-card__bg { transform: scale(1.06); }
.pillar-card__overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,22,40,.92) 0%, rgba(10,22,40,.28) 100%); transition: background var(--transition-base); }
.pillar-card:hover .pillar-card__overlay { background: linear-gradient(to top, rgba(10,22,40,.97) 0%, rgba(10,22,40,.5) 100%); }
.pillar-card__content { position: relative; z-index: 5; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; padding: var(--space-4); }
.pillar-card__icon { font-size: 2.5rem; margin-bottom: var(--space-2); }
.pillar-card__title { font-size: var(--text-2xl); font-weight: 700; color: #fff; margin-bottom: var(--space-1); }
.pillar-card__desc { font-size: var(--text-sm); color: rgba(255,255,255,.75); margin-bottom: var(--space-3); max-height: 0; overflow: hidden; transition: max-height var(--transition-slow); }
.pillar-card:hover .pillar-card__desc { max-height: 120px; }
.pillar-card__link { display: inline-flex; align-items: center; gap: 6px; color: var(--color-accent-400); font-family: var(--font-heading); font-size: var(--text-sm); font-weight: 700; opacity: 0; transition: opacity var(--transition-base); }
.pillar-card:hover .pillar-card__link { opacity: 1; }

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  background: linear-gradient(135deg, var(--color-accent-700) 0%, var(--color-accent-500) 55%, var(--color-gold-500) 100%);
  padding: var(--space-10) 0;
  text-align: center;
}
.cta-band__title { font-size: var(--text-4xl); color: #fff; margin-bottom: var(--space-2); }
.cta-band__desc { font-size: var(--text-lg); color: rgba(255,255,255,.88); margin-bottom: var(--space-4); }
.cta-band__actions { display: flex; gap: var(--space-2); justify-content: center; flex-wrap: wrap; }

/* ============================================================
   PAGE HERO (inner pages)
   ============================================================ */
.page-hero {
  padding-top: var(--nav-height);
  background: var(--color-primary-800);
  padding-bottom: var(--space-10);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -40%; right: -8%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(232,98,26,.12) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero__inner { padding-top: var(--space-8); }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: var(--text-sm); color: rgba(255,255,255,.55); margin-bottom: var(--space-3); }
.breadcrumb a { color: rgba(255,255,255,.55); }
.breadcrumb a:hover { color: var(--color-gold-400); }
.breadcrumb span { color: var(--color-gold-400); }
.page-hero__title { font-size: clamp(2rem, 4vw, 3.25rem); color: #fff; margin-bottom: var(--space-2); }
.page-hero__title span { color: var(--color-accent-400); }
.page-hero__subtitle { font-size: var(--text-lg); color: rgba(255,255,255,.75); max-width: 640px; line-height: 1.7; }

/* ============================================================
   FEATURE CARDS
   ============================================================ */
.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}
.feature-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-accent-200); transform: translateY(-4px); }
.feature-card__icon {
  width: 60px; height: 60px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent-500), var(--color-gold-500));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-3);
  color: #fff;
}
.feature-card__title { font-size: var(--text-xl); font-family: var(--font-heading); font-weight: 700; color: var(--color-primary-800); margin-bottom: var(--space-1); }
.feature-card__desc { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.7; }

/* ============================================================
   DETAIL SECTION
   ============================================================ */
.detail-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: center;
  padding: var(--space-10) 0;
  border-bottom: 1px solid var(--color-border);
}
.detail-section:last-of-type { border-bottom: none; }
.detail-section--reverse .detail-section__img-col { order: 2; }
.detail-section--reverse .detail-section__content { order: 1; }
.detail-section__img { border-radius: var(--radius-xl); object-fit: cover; width: 100%; height: 380px; box-shadow: var(--shadow-lg); }
.detail-section__tagline {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  font-style: italic;
  color: var(--color-accent-600);
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-3);
  border-left: 3px solid var(--color-accent-500);
  background: var(--color-accent-100);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ============================================================
   CHECKLIST
   ============================================================ */
.checklist { display: flex; flex-direction: column; gap: .625rem; margin: var(--space-3) 0; }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
}
.checklist li::before {
  content: '';
  flex-shrink: 0;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--color-accent-500) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / 11px no-repeat;
  margin-top: 2px;
}

/* ============================================================
   ACCORDION
   ============================================================ */
.accordion__item { border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: var(--space-2); overflow: hidden; }
.accordion__header {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem var(--space-4);
  background: #fff;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-primary-800);
  transition: background var(--transition-fast);
  text-align: left;
}
.accordion__header:hover { background: var(--color-surface); }
.accordion__header.open { background: var(--color-primary-800); color: #fff; }
.accordion__icon { width: 24px; height: 24px; flex-shrink: 0; transition: transform var(--transition-base); }
.accordion__header.open .accordion__icon { transform: rotate(45deg); }
.accordion__body { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.accordion__body.open { max-height: 600px; padding: var(--space-4); }
.accordion__body p { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.7; }

/* ============================================================
   SDG / SUSTAINABILITY CARDS
   ============================================================ */
.sdg-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: var(--space-5); }
.sdg-card {
  background: #fff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}
.sdg-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.sdg-card__img-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-neutral-50);
  padding: var(--space-4);
}
.sdg-card__img {
  width: 160px;
  height: 160px;
  object-fit: contain;
  border-radius: var(--radius-md);
}
.sdg-card__body {
  padding: var(--space-4) var(--space-4) var(--space-5);
  flex: 1;
  border-top: 4px solid var(--color-accent-500);
}
.sdg-card__num { font-family: var(--font-heading); font-size: var(--text-sm); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--color-accent-500); margin-bottom: .5rem; }
.sdg-card__title { font-family: var(--font-heading); font-size: var(--text-xl); font-weight: 700; color: var(--color-primary-800); margin-bottom: var(--space-2); line-height: 1.3; }
.sdg-card__desc { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.75; }

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: var(--space-8); align-items: flex-start; }
.contact-info { display: flex; flex-direction: column; gap: var(--space-4); }
.contact-info-item { display: flex; gap: var(--space-3); align-items: flex-start; }
.contact-info-item__icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-100);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
  color: var(--color-accent-600);
}
.contact-info-item__label { font-family: var(--font-heading); font-size: var(--text-sm); font-weight: 700; color: var(--color-primary-800); margin-bottom: 4px; }
.contact-info-item__value { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.6; }

.contact-form { background: #fff; border-radius: var(--radius-xl); padding: var(--space-6); box-shadow: var(--shadow-md); }
.form-group { margin-bottom: var(--space-3); }
.form-label { display: block; font-family: var(--font-heading); font-size: var(--text-sm); font-weight: 700; color: var(--color-primary-800); margin-bottom: .5rem; }
.form-control {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.form-control:focus { border-color: var(--color-accent-500); box-shadow: 0 0 0 3px rgba(232,98,26,.12); background: #fff; }
textarea.form-control { min-height: 140px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
.form-success { display: none; padding: var(--space-3); background: #d1fae5; border-radius: var(--radius-md); color: #065f46; font-weight: 600; font-size: var(--text-sm); margin-top: var(--space-3); }
.form-success.show { display: block; }

/* ============================================================
   GALLERY
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: var(--space-2);
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item--wide { grid-column: span 2; }
.gallery-item--tall { grid-row: span 2; }
.gallery-overlay {
  position: absolute; inset: 0;
  background: rgba(10,22,40,.55);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 2rem;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }

/* ============================================================
   NEWS CARDS
   ============================================================ */
.news-card { background: #fff; border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-sm); transition: all var(--transition-base); }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-card__img { height: 220px; object-fit: cover; width: 100%; }
.news-card__body { padding: var(--space-4); }
.news-card__date { font-size: var(--text-xs); color: var(--color-accent-500); font-weight: 700; letter-spacing: .06em; text-transform: uppercase; margin-bottom: .5rem; }
.news-card__title { font-family: var(--font-heading); font-size: var(--text-lg); font-weight: 700; color: var(--color-primary-800); margin-bottom: var(--space-1); line-height: 1.35; }
.news-card__excerpt { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.65; }

/* ============================================================
   CAREERS
   ============================================================ */
.job-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  display: flex; align-items: flex-start; gap: var(--space-4);
  transition: all var(--transition-base);
}
.job-card:hover { border-color: var(--color-accent-500); box-shadow: var(--shadow-md); transform: translateX(4px); }
.job-card__icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-accent-100);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.4rem;
  color: var(--color-accent-600);
}
.job-card__title { font-family: var(--font-heading); font-size: var(--text-xl); font-weight: 700; color: var(--color-primary-800); margin-bottom: 4px; }
.job-card__tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: var(--space-2); }
.tag { padding: .2rem .6rem; border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: 600; }
.tag--dept { background: var(--color-primary-800); color: rgba(255,255,255,.9); }
.tag--type { background: var(--color-accent-100); color: var(--color-accent-700); }
.tag--loc  { background: var(--color-neutral-200); color: var(--color-neutral-700); }
.job-card__desc { font-size: var(--text-sm); color: var(--color-text-secondary); }
.job-card__action { margin-left: auto; flex-shrink: 0; }

/* ============================================================
   TEAM CARD
   ============================================================ */
.team-card { background: #fff; border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-sm); transition: all var(--transition-base); }
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.team-card__photo { height: 280px; object-fit: cover; width: 100%; }
.team-card__body { padding: var(--space-4); text-align: center; border-top: 3px solid var(--color-accent-500); }
.team-card__name { font-family: var(--font-heading); font-size: var(--text-xl); font-weight: 700; color: var(--color-primary-800); }
.team-card__role { font-size: var(--text-sm); color: var(--color-accent-500); font-weight: 600; margin-top: 4px; }

/* ============================================================
   POLICY / HSE BLOCKS
   ============================================================ */
.policy-block {
  background: var(--color-primary-800);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  color: #fff;
}
.policy-block__title { font-size: var(--text-2xl); margin-bottom: var(--space-4); color: var(--color-gold-400); }
.policy-block p { font-size: var(--text-sm); color: rgba(255,255,255,.75); line-height: 1.8; margin-bottom: var(--space-3); }

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--color-accent-200); }
.timeline__item { position: relative; margin-bottom: var(--space-5); }
.timeline__dot {
  position: absolute;
  left: -2rem; top: 4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--color-accent-500);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--color-accent-500);
}
.timeline__year { font-family: var(--font-heading); font-size: var(--text-xs); font-weight: 700; color: var(--color-accent-500); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px; }
.timeline__title { font-family: var(--font-heading); font-size: var(--text-lg); font-weight: 700; color: var(--color-primary-800); margin-bottom: .5rem; }
.timeline__desc { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.65; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-in-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

.fade-in { opacity: 0; transition: opacity .6s ease; }
.fade-in.visible { opacity: 1; }

.stagger > * { opacity: 0; transform: translateY(24px); transition: opacity .5s ease, transform .5s ease; }
.stagger.visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0s; }
.stagger.visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: .08s; }
.stagger.visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: .16s; }
.stagger.visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: .24s; }
.stagger.visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: .32s; }
.stagger.visible > *:nth-child(6) { opacity: 1; transform: none; transition-delay: .40s; }
.stagger.visible > *:nth-child(7) { opacity: 1; transform: none; transition-delay: .60s; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--color-primary-900); color: rgba(255,255,255,.75); padding-top: var(--space-12); }
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__brand-logo { height: 56px; width: auto; margin-bottom: var(--space-3); }
.footer__brand-desc { font-size: var(--text-sm); line-height: 1.7; margin-bottom: var(--space-4); color: rgba(255,255,255,.6); }
.footer__socials { display: flex; gap: var(--space-1); }
.footer__social-link {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.7);
  font-size: 15px;
  transition: all var(--transition-base);
}
.footer__social-link:hover { background: var(--color-accent-500); color: #fff; transform: translateY(-3px); }
.footer__col-title { font-family: var(--font-heading); font-size: var(--text-sm); font-weight: 700; color: #fff; letter-spacing: .08em; text-transform: uppercase; margin-bottom: var(--space-3); }
.footer__links { display: flex; flex-direction: column; gap: .625rem; }
.footer__links a { font-size: var(--text-sm); color: rgba(255,255,255,.6); transition: all var(--transition-fast); display: flex; align-items: center; gap: 6px; }
.footer__links a:hover { color: var(--color-gold-400); padding-left: 6px; }
.footer__contact-item { display: flex; align-items: flex-start; gap: .75rem; font-size: var(--text-sm); color: rgba(255,255,255,.6); margin-bottom: .75rem; line-height: 1.55; }
.footer__contact-item svg { flex-shrink: 0; margin-top: 2px; color: var(--color-accent-400); }
.footer__bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) 0;
  font-size: var(--text-xs);
  color: rgba(255,255,255,.4);
  flex-wrap: wrap; gap: var(--space-2);
}
.footer__bottom-links { display: flex; gap: var(--space-3); }
.footer__bottom-links a { color: rgba(255,255,255,.4); }
.footer__bottom-links a:hover { color: var(--color-gold-400); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .nav__links { display: none; }
  .nav__cta    { display: none; }
  .nav__hamburger { display: flex; }
  .nav__mobile    { display: block; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .why-grid { grid-template-columns: repeat(2,1fr); }
  .stats-bar__grid { grid-template-columns: repeat(2,1fr); }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .about-teaser { grid-template-columns: 1fr; }
  .about-teaser__content { padding-left: 0; }
  .about-teaser__images { height: 360px; }
  .contact-grid { grid-template-columns: 1fr; }
  .detail-section { grid-template-columns: 1fr; }
  .detail-section--reverse .detail-section__img-col { order: 0; }
  .detail-section--reverse .detail-section__content  { order: 0; }
}

@media (max-width: 768px) {
  :root { --nav-height: 68px; }
  .section { padding: var(--space-8) 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .hero__title { font-size: 1.9rem; }
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .section-title { font-size: var(--text-2xl); }
  .cta-band__title { font-size: var(--text-3xl); }
  .stats-bar__grid { grid-template-columns: repeat(2,1fr); }
  .stats-bar__item::after { display: none; }
  .footer__top { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .gallery-item--wide { grid-column: span 1; }
  .gallery-item--tall { grid-row: span 1; }
  .job-card { flex-direction: column; }
  .job-card__action { margin-left: 0; }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .stats-bar__grid { grid-template-columns: 1fr 1fr; }
  .hero__scroll { display: none; }
  .hero__arrow { width: 40px; height: 40px; }
}