/* ============================================
   Orbital Hydro — Design System
   ============================================ */

:root {
  --color-primary: #E65100;
  --color-primary-dark: #BF360C;
  --color-primary-light: #FF6D00;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F5F5;
  --color-bg-dark: #1C1612;
  --color-text: #212121;
  --color-text-secondary: #616161;
  --color-text-light: #FFFFFF;
  --color-border: #E0E0E0;
  --color-border-light: #EEEEEE;

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-heading: Georgia, "Times New Roman", Times, serif;
  --font-mono: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;

  --width-container: 1100px;
  --width-narrow: 780px;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 5rem;

  --header-height: 72px;
}

/* ---- Reset ---- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ---- Typography ---- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

h1 {
  font-size: 2.75rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

h4 {
  font-size: 1.125rem;
  font-family: var(--font-body);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

p {
  margin-bottom: var(--space-md);
  max-width: 70ch;
}

.lead {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 60ch;
}

blockquote {
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background: var(--color-bg-alt);
  font-style: italic;
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

blockquote cite {
  display: block;
  margin-top: var(--space-sm);
  font-style: normal;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ---- Layout ---- */

.container {
  width: 100%;
  max-width: var(--width-container);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--width-narrow);
}

.section {
  padding: var(--space-xxl) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-text-light);
}

.section__header {
  margin-bottom: var(--space-xl);
}

.section__header h4 {
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

/* ---- Grid ---- */

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ---- Header ---- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.site-header__logo svg {
  width: 40px;
  height: 40px;
}

.site-header__logo span {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.site-nav__links {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.site-nav__links a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color 0.2s ease;
}

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

.btn {
  display: inline-block;
  padding: 0.625rem 1.5rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-light);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-light);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn--small {
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
}

.btn--large {
  padding: 0.875rem 2.25rem;
  font-size: 1rem;
}

/* ---- Mobile Nav Toggle ---- */

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Hero ---- */

.hero {
  padding: var(--space-xxl) 0;
  border-bottom: 1px solid var(--color-border);
}

.hero--home {
  padding: 6rem 0;
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero .lead {
  margin-bottom: var(--space-lg);
}

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

/* ---- Stats Bar ---- */

.stats-bar {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: var(--space-xl) 0;
}

.stats-bar .container {
  display: flex;
  justify-content: space-around;
  text-align: center;
}

.stat__value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary-light);
  display: block;
}

.stat__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #9E9E9E;
  margin-top: var(--space-xs);
  display: block;
}

/* ---- Cards ---- */

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: var(--color-primary);
}

.card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.card h3 {
  margin-bottom: var(--space-sm);
}

.card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.card__link {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* ---- News Items ---- */

.news-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

.news-item__date {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.news-item h3 {
  margin-bottom: var(--space-sm);
}

.news-item h3 a {
  color: var(--color-text);
}

.news-item h3 a:hover {
  color: var(--color-primary);
}

.news-item p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ---- Timeline ---- */

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

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

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

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-xl) - 5px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
}

.timeline__year {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.timeline__item h3 {
  font-family: var(--font-body);
  font-size: 1.1rem;
}

/* ---- Job Listings ---- */

.job-listing {
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-md);
  transition: border-color 0.2s ease;
}

.job-listing:hover {
  border-color: var(--color-primary);
}

.job-listing h3 {
  margin-bottom: var(--space-xs);
}

.job-listing__meta {
  display: flex;
  gap: var(--space-lg);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.job-listing__meta span::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-text-secondary);
  vertical-align: middle;
  margin-right: var(--space-sm);
}

.job-listing__meta span:first-child::before {
  display: none;
}

/* ---- Data Table ---- */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table th,
.data-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.data-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  font-weight: 600;
}

.data-table tbody tr:hover {
  background: var(--color-bg-alt);
}

.data-table .text-right {
  text-align: right;
}

.data-table .highlight {
  color: var(--color-primary);
  font-weight: 600;
}

/* ---- Bar Chart (CSS-only) ---- */

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-md);
  height: 200px;
  padding-top: var(--space-lg);
  border-bottom: 2px solid var(--color-border);
}

.bar-chart__bar {
  flex: 1;
  background: var(--color-primary);
  position: relative;
  min-height: 4px;
  transition: opacity 0.2s;
}

.bar-chart__bar:hover {
  opacity: 0.85;
}

.bar-chart__bar span {
  position: absolute;
  bottom: -2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ---- Disclaimer / Fine Print ---- */

.fine-print {
  font-size: 0.75rem;
  color: #9E9E9E;
  line-height: 1.6;
  max-width: 80ch;
}

.fine-print a {
  color: #9E9E9E;
  text-decoration: underline;
}

/* ---- Footer ---- */

.site-footer {
  background: var(--color-bg-dark);
  color: #D5C8BA;
  padding: var(--space-xxl) 0 var(--space-lg);
}

.site-footer h4 {
  color: #F0E6DA;
  font-size: 0.8rem;
  margin-bottom: var(--space-md);
  letter-spacing: 0.06em;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xxl);
}

.footer__about p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: #BEB0A2;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  color: #BEB0A2;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer__links a:hover {
  color: #F0B060;
}

.footer__bottom {
  border-top: 1px solid #4A3D32;
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-lg);
}

.footer__copyright {
  font-size: 0.8rem;
  color: #A09285;
}

.footer__legal {
  font-size: 0.7rem;
  color: #908376;
  max-width: 50ch;
  text-align: right;
  line-height: 1.5;
}

/* ---- Page Header (inner pages) ---- */

.page-header {
  background: var(--color-bg-alt);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: 2.25rem;
  margin-bottom: var(--space-sm);
}

.page-header .lead {
  margin-bottom: 0;
}

/* ---- CTA Banner ---- */

.cta-banner {
  background: var(--color-primary);
  color: var(--color-text-light);
  padding: var(--space-xl) 0;
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.cta-banner p {
  margin: 0 auto var(--space-lg);
  opacity: 0.9;
}

.cta-banner .btn {
  background: var(--color-text-light);
  color: var(--color-primary);
}

.cta-banner .btn:hover {
  background: #F5F5F5;
}

/* ---- Utilities ---- */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-small { font-size: 0.875rem; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-xl { margin-bottom: var(--space-xl); }

/* ---- Responsive ---- */

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .container {
    padding: 0 var(--space-md);
  }

  .section {
    padding: var(--space-xl) 0;
  }

  .hero--home {
    padding: var(--space-xl) 0;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .stats-bar .container {
    flex-wrap: wrap;
    gap: var(--space-lg);
  }

  .stat {
    flex: 0 0 calc(50% - var(--space-md));
  }

  .stat__value {
    font-size: 1.75rem;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__bottom {
    flex-direction: column;
  }

  .footer__legal {
    text-align: left;
    max-width: none;
  }

  /* Mobile nav */
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    border-top: 1px solid var(--color-border);
  }

  .site-nav.open {
    transform: translateX(0);
  }

  .site-nav__links {
    flex-direction: column;
    gap: var(--space-md);
    width: 100%;
  }

  .site-nav__links a {
    font-size: 1.1rem;
    display: block;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
  }

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .job-listing__meta {
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-md);
  }

  .bar-chart {
    height: 150px;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }

  .stat {
    flex: 0 0 100%;
  }

  .stats-bar .container {
    gap: var(--space-md);
  }
}