/* =============================================================
   Bluestream shared styles
   -------------------------------------------------------------
   Every public page loads this file:
     <link rel="stylesheet" href="/shared.css">
   Keep this file focused on globals only:
     - Design tokens
     - Reset + body defaults
     - Nav (desktop + mobile)
     - Footer (supports 5-col, 4-col, 3-col, and compact variants)
     - Theme toggle + nav buttons
     - Shared utility selectors (.tw table wrapper)
   Page-specific styles belong in each page's inline <style>.
   ============================================================= */


/* =============================================================
   1. DESIGN TOKENS
   ============================================================= */

:root {
  --blue-vivid: #1a7de8;
  --blue-mid: #1565c0;
  --blue-dark: #0d1b3e;
  --blue-light: #e8f2fd;
  --red-accent: #c0392b;
  --red-mid: #a93226;

  --sans: 'Figtree', sans-serif;
  --display: 'Orbitron', 'Figtree', sans-serif;
  --mono: 'DM Mono', monospace;

  --nav-h: 68px;
  --r: 12px;
  --r-s: 7px;
  --t: 0.25s ease;
}

[data-theme="light"] {
  --bg: #f5f3ee;
  --bg2: #eceae4;
  --surface: #ffffff;
  --surface2: #f9f8f4;
  --border: #ddd9cf;
  --border-s: #c4bfb5;
  --ink: #0d1b3e;
  --ink-mid: #3d4f6e;
  --ink-dim: #7a8ba8;
  --accent: #1a7de8;
  --accent-l: #e8f2fd;
  --accent-m: #93c5fd;
  --shadow-s: 0 1px 4px rgba(13,27,62,.07), 0 1px 2px rgba(13,27,62,.04);
  --shadow-m: 0 4px 24px rgba(13,27,62,.09), 0 2px 6px rgba(13,27,62,.05);
  --shadow-l: 0 16px 56px rgba(13,27,62,.13), 0 4px 16px rgba(13,27,62,.07);
  --toggle-bg: #e2dfd8;
  --callout-bg: #e8f2fd;
  --callout-color: #0d1b3e;
  --warn-bg: #fef9ec;
  --warn-color: #78350f;
  --success-bg: #f0fdf4;
  --success-color: #14532d;
  --danger-bg: #fef2f2;
  --danger-color: #991b1b;
}

[data-theme="dark"] {
  --bg: #08111e;
  --bg2: #0d1b3e;
  --surface: #0f2045;
  --surface2: #08111e;
  --border: #1e3260;
  --border-s: #2a4580;
  --ink: #e8f2fd;
  --ink-mid: #93b8e0;
  --ink-dim: #4a6a90;
  --accent: #42a5f5;
  --accent-l: rgba(66,165,245,.1);
  --accent-m: rgba(66,165,245,.25);
  --shadow-s: 0 1px 4px rgba(0,0,0,.35);
  --shadow-m: 0 4px 24px rgba(0,0,0,.4);
  --shadow-l: 0 16px 56px rgba(0,0,0,.5);
  --toggle-bg: #1e3260;
  --callout-bg: rgba(66,165,245,.08);
  --callout-color: #93b8e0;
  --warn-bg: rgba(217,119,6,.08);
  --warn-color: #fcd34d;
  --success-bg: rgba(22,163,74,.08);
  --success-color: #86efac;
  --danger-bg: rgba(220,38,38,.08);
  --danger-color: #fca5a5;
}


/* =============================================================
   2. RESET + BODY
   ============================================================= */

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--t), color var(--t);
}

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }


/* =============================================================
   3. NAV (desktop)
   -------------------------------------------------------------
   The nav is positioned fixed and sits above all content.
   On pages with a dark hero, add class "transparent-on-hero" to
   <body> — the nav starts transparent and gains the solid
   background when scrolled. On pages without a dark hero, the
   nav is always solid (the default).

   On pages using the transparent nav, add class "scrolled" via
   JS once the user scrolls past the hero.
   ============================================================= */

#main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 40px;
  gap: 0;
  background: var(--bg);
  box-shadow: var(--shadow-s);
  border-bottom: 1px solid var(--border);
  transition: background var(--t), box-shadow var(--t), border-color var(--t);
}

/* Transparent-on-hero variant — pages opting into this add the
   class to <body>. Nav starts transparent, becomes solid when
   .scrolled is added by page JS. */
body.nav-transparent #main-nav:not(.scrolled) {
  background: transparent;
  box-shadow: none;
  border-bottom-color: transparent;
}
body.nav-transparent #main-nav:not(.scrolled) .nav-link { color: rgba(255,255,255,.8); }
body.nav-transparent #main-nav:not(.scrolled) .nav-link:hover { color: #fff; background: rgba(255,255,255,.1); }
body.nav-transparent #main-nav:not(.scrolled) .btn-nav-outline { color: rgba(255,255,255,.8); border-color: rgba(255,255,255,.3); }
body.nav-transparent #main-nav:not(.scrolled) .btn-nav-outline:hover { color: #fff; border-color: rgba(255,255,255,.7); }
body.nav-transparent #main-nav:not(.scrolled) .theme-toggle { background: rgba(255,255,255,.15); }

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  gap: 10px;
}
.nav-logo-img {
  height: 32px;
  width: 32px;
  object-fit: contain;
  flex-shrink: 0;
  transition: filter var(--t);
}
.nav-logo-fallback { display: flex; align-items: center; }
[data-theme="dark"] .nav-logo-img { filter: brightness(0) invert(1); }

.nav-logo-wordmark {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
  font-variant: small-caps;
  letter-spacing: .08em;
  color: var(--ink);
  transition: color var(--t);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 40px;
  flex: 1;
}
.nav-link {
  padding: 6px 14px;
  border-radius: var(--r-s);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-mid);
  text-decoration: none;
  transition: color var(--t), background var(--t);
}
.nav-link:hover { color: var(--ink); background: var(--bg2); }
.nav-link.active { color: var(--accent); background: var(--accent-l); }

/* Data-driven active state — set <body data-page="academy">
   and any <a data-nav="academy"> in the nav gets active styles.
   This lets the nav partial be identical on every page. */
body[data-page="services"]   .nav-link[data-nav="services"],
body[data-page="process"]    .nav-link[data-nav="process"],
body[data-page="sectors"]    .nav-link[data-nav="sectors"],
body[data-page="academy"]    .nav-link[data-nav="academy"],
body[data-page="about"]      .nav-link[data-nav="about"],
body[data-page="contact"]    .nav-link[data-nav="contact"] {
  color: var(--accent);
  background: var(--accent-l);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}


/* =============================================================
   4. NAV BUTTONS + THEME TOGGLE
   ============================================================= */

.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  font-size: 16px;
  background: var(--toggle-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
  flex-shrink: 0;
}
.theme-toggle:hover { transform: scale(1.1); }

.btn-nav-outline {
  padding: 8px 18px;
  border-radius: var(--r-s);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-mid);
  background: transparent;
  border: 1.5px solid var(--border-s);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--t);
  white-space: nowrap;
}
.btn-nav-outline:hover { color: var(--ink); border-color: var(--accent); }

/* Default primary uses red — the on-brand signup CTA */
.btn-nav-primary {
  padding: 9px 20px;
  border-radius: var(--r-s);
  font-size: 13px;
  font-weight: 700;
  background: var(--red-accent);
  color: #fff;
  border: none;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--t);
  box-shadow: 0 2px 10px rgba(192,57,43,.4);
}
.btn-nav-primary:hover { background: var(--red-mid); transform: translateY(-1px); }

/* Blue variant — some pages use blue primary instead of red.
   Add class "btn-nav-primary-blue" or use <a class="btn-nav-primary blue"> */
.btn-nav-primary.blue,
.btn-nav-primary-blue {
  background: var(--blue-vivid);
  box-shadow: 0 2px 10px rgba(26,125,232,.4);
}
.btn-nav-primary.blue:hover,
.btn-nav-primary-blue:hover {
  background: var(--blue-mid);
}


/* =============================================================
   5. MOBILE MENU + BURGER
   ============================================================= */

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  margin-left: 8px;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all var(--t);
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 190;
  background: var(--bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 40px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  text-decoration: none;
}
.mobile-close {
  position: absolute;
  top: 20px; right: 24px;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--ink-dim);
  cursor: pointer;
}


/* =============================================================
   6. FOOTER
   -------------------------------------------------------------
   Supports multiple layout variants through the class on the
   <footer> element or a wrapper:
     <footer>                      — default tall 5-col layout
     <footer class="footer-compact"> — compact single-row variant
       used on service sub-pages
   ============================================================= */

footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 72px 40px 32px;
  transition: background var(--t);
}

.footer-grid {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}
/* Footers with fewer columns — academy uses 5, most services use 4,
   simple pages use 3. Add one of these classes to .footer-grid: */
.footer-grid.cols-4 { grid-template-columns: 2fr 1fr 1fr 1fr; }
.footer-grid.cols-3 { grid-template-columns: 2fr 1fr 1fr; }

.footer-logo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo-img {
  height: 32px;
  width: 32px;
  object-fit: contain;
  flex-shrink: 0;
}
[data-theme="dark"] .footer-logo-img { filter: brightness(0) invert(1); }

.footer-logo-wordmark {
  font-size: 20px;
  font-weight: 700;
  font-family: var(--display);
  font-variant: small-caps;
  letter-spacing: .07em;
  color: var(--ink);
}

.footer-brand p {
  font-size: 14px;
  font-weight: 300;
  color: var(--ink-dim);
  line-height: 1.75;
  max-width: 280px;
  margin-bottom: 20px;
}

.footer-contact a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-dim);
  text-decoration: none;
  margin-bottom: 8px;
  transition: color var(--t);
}
.footer-contact a:hover { color: var(--accent); }
.footer-contact svg {
  width: 14px;
  height: 14px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Flag SVGs used in the footer contact line.
   Override the default stroke/fill behaviour that the footer-contact
   svg selector applies. */
.flag-svg {
  width: auto !important;
  height: auto !important;
  fill: revert !important;
  stroke: none !important;
  stroke-width: 0 !important;
  flex-shrink: 0;
}

.veteran-badge {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border-s);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-family: var(--mono);
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink);
  font-family: var(--mono);
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul a {
  font-size: 14px;
  font-weight: 300;
  color: var(--ink-mid);
  text-decoration: none;
  transition: color var(--t);
}
.footer-col ul a:hover { color: var(--accent); }

.footer-bottom {
  max-width: 1160px;
  margin: 0 auto;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 12px; color: var(--ink-dim); }

.footer-social { display: flex; gap: 8px; }
.footer-social a {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-dim);
  text-decoration: none;
  transition: all var(--t);
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }
.footer-social svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Compact footer variant — used on pages like /services/commissioning.
   Single-row flex layout. Wrap the content in .footer-compact or apply
   the class directly to <footer>. */
footer.footer-compact {
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
footer.footer-compact .footer-logo-img { height: 28px; width: 28px; }
footer.footer-compact .footer-wordmark,
footer.footer-compact .footer-logo-wordmark {
  font-size: 16px;
  letter-spacing: .07em;
}
footer.footer-compact .footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
footer.footer-compact .footer-links a {
  font-size: 13px;
  color: var(--ink-dim);
  text-decoration: none;
  transition: color var(--t);
}
footer.footer-compact .footer-links a:hover { color: var(--accent); }
footer.footer-compact .footer-copy {
  font-size: 11px;
  color: var(--ink-dim);
  font-family: var(--mono);
}


/* =============================================================
   7. SHARED UTILITIES
   ============================================================= */

/* Table wrapper — .tw around a <table> gives rounded corners,
   horizontal scroll on mobile, and shared typography. */
.tw {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: var(--r);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-s);
}
.tw table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.tw th {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  color: var(--ink);
  background: var(--surface2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.tw td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--ink-mid);
  vertical-align: top;
  font-weight: 300;
  line-height: 1.65;
}
.tw tr:last-child td { border-bottom: none; }
.tw tr:hover td { background: var(--bg2); }


/* =============================================================
   8. RESPONSIVE — shared components
   -------------------------------------------------------------
   Only affects the shared layer: nav collapses to burger, footer
   reflows, mobile menu takes over. Page-specific responsive
   rules belong in each page's inline <style>.
   ============================================================= */

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid.cols-4,
  .footer-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 768px) {
  #main-nav { padding: 0 20px; }
  .nav-links, .nav-right { display: none; }
  .nav-burger { display: flex; }

  footer { padding: 48px 20px 24px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  footer.footer-compact {
    padding: 28px 20px;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 680px) {
  footer.footer-compact { padding: 28px 20px; }
}
