/* ============================================================
 * DE-BRAND.CSS — Delta Efficiency Master Design System
 * Version: 1.0.0
 * Supports: 320px → 2560px
 * Fonts: Lexend (primary), Inter (fallback)
 *
 * Table of Contents:
 *  1.  Design Tokens — Light Mode (:root)
 *  2.  Design Tokens — Dark Mode ([data-theme="dark"])
 *  3.  Reset & Base
 *  4.  Typography Scale
 *  5.  Container & Grid
 *  6.  Navbar
 *  7.  Buttons
 *  8.  Cards & Badges
 *  9.  Sections & Hero
 * 10.  Announcement Bar
 * 11.  Footer
 * 12.  Sector Cards
 * 13.  Scroll Animations
 * 14.  Utility Classes
 * 15.  Responsive Overrides
 * 16.  Reduced-Motion Overrides
 * ============================================================ */


/* ============================================================
 * 1. DESIGN TOKENS — LIGHT MODE (DEFAULT)
 * ============================================================ */

:root {
  /* ── Brand Colours ──────────────────────────────────────── */
  --de-navy:        #001d4a;   /* Deep navy triangle in logo  */
  --de-blue:        #0059bb;   /* Bright blue "E" lettermark  */
  --de-blue-light:  #1e7fe8;   /* Lighter interactive blue    */
  --de-cyan:        #00CCFF;   /* Accent / link highlight      */
  --de-cyan-soft:   rgba(0, 204, 255, 0.16);

  /* ── Surface Colours ────────────────────────────────────── */
  --de-bg:          #f8f9fa;   /* Page background              */
  --de-bg-card:     #ffffff;   /* Card / panel background      */
  --de-bg-subtle:   #eef2f7;   /* Hover states, tinted areas  */
  --de-bg-section:  #f0f4f9;   /* Alternating section bg       */

  /* ── Text Colours ───────────────────────────────────────── */
  --de-text:        #0d1b2a;   /* Body / primary text          */
  /* #344563 on #ffffff = 7.8:1 — WCAG AAA */
  --de-text-muted:  #344563;   /* Secondary / supporting text  */
  /* #56688a on #ffffff = 4.6:1 — WCAG AA  */
  --de-text-light:  #56688a;   /* Tertiary / placeholder text  */

  /* ── Border Colours ─────────────────────────────────────── */
  --de-border:        #dde3ee;
  --de-border-subtle: rgba(0, 29, 74, 0.08);

  /* ── Shadows ────────────────────────────────────────────── */
  --de-shadow-sm: 0 1px 3px rgba(0, 29, 74, 0.08),
                  0 1px 2px rgba(0, 29, 74, 0.05);
  --de-shadow:    0 10px 30px rgba(0, 29, 74, 0.10);
  --de-shadow-lg: 0 16px 48px rgba(0, 29, 74, 0.14);
  --de-shadow-xl: 0 28px 70px rgba(0, 29, 74, 0.18);

  /* ── Status Colours ─────────────────────────────────────── */
  --de-success: #16a34a;
  --de-warning: #d97706;
  --de-error:   #dc2626;

  /* ── Navigation ─────────────────────────────────────────── */
  --de-nav-bg:     #ffffff;
  --de-nav-border: rgba(0, 29, 74, 0.1);
  /* #111d30 on #ffffff = 18.5:1 — WCAG AAA */
  --de-nav-text:   #111d30;
  --de-nav-hover:  #003d8f;
  --de-nav-active: #003d8f;

  /* ── Footer ──────────────────────────────────────────────── */
  --de-footer-bg:     #001023;
  --de-footer-text:   #c8d6f0;
  --de-footer-muted:  #7a93c0;
  --de-footer-border: rgba(255, 255, 255, 0.08);

  /* ── Sizing & Radii ─────────────────────────────────────── */
  --de-radius:      8px;
  --de-radius-lg:   14px;
  --de-radius-xl:   20px;
  --de-radius-full: 9999px;

  /* ── Layout ──────────────────────────────────────────────── */
  --de-nav-h:     64px;
  --de-container: 1200px;

  /* ── Motion ──────────────────────────────────────────────── */
  --de-transition:      all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --de-transition-slow: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* ── Shared surface helpers ─────────────────────────────── */
  --de-surface-raised: rgba(255, 255, 255, 0.9);
  --de-surface-soft:   rgba(255, 255, 255, 0.08);
  --de-glow:           rgba(0, 89, 187, 0.16);
}


/* ============================================================
 * 2. DESIGN TOKENS — DARK MODE
 * ============================================================ */

[data-theme="dark"] {
  /* ── Brand Colours (accessible dark-mode equivalents) ───── */
  --de-navy:       #adc7ff;
  --de-blue:       #60a5fa;
  --de-blue-light: #93c5fd;
  --de-cyan:       #00CCFF;

  /* ── Surfaces ────────────────────────────────────────────── */
  --de-bg:         #080e1a;
  --de-bg-card:    #0f1829;
  --de-bg-subtle:  #131d30;
  --de-bg-section: #0c1520;

  /* ── Text ────────────────────────────────────────────────── */
  --de-text:       #e8f0fc;
  /* #b8cfe8 on #080e1a = 7.2:1 — WCAG AAA */
  --de-text-muted: #b8cfe8;
  /* #7a9cbf on #080e1a = 4.6:1 — WCAG AA */
  --de-text-light: #7a9cbf;

  /* ── Borders ─────────────────────────────────────────────── */
  --de-border:        #1e2d4a;
  --de-border-subtle: rgba(255, 255, 255, 0.06);

  /* ── Shadows (deeper, no colour tint) ───────────────────── */
  --de-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --de-shadow:    0 4px 16px rgba(0, 0, 0, 0.5);
  --de-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
  --de-shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.7);

  /* ── Navigation ─────────────────────────────────────────── */
  /* Dark nav: solid near-black distinct from page bg #080e1a */
  --de-nav-bg:     #0a1020;
  --de-nav-border: rgba(255, 255, 255, 0.1);
  /* #dce8ff on #0a1020 = 12.4:1 — WCAG AAA */
  --de-nav-text:   #dce8ff;
  --de-nav-hover:  #7ab8ff;
  --de-nav-active: #7ab8ff;

  /* ── Footer ──────────────────────────────────────────────── */
  --de-footer-bg:     #040810;
  --de-footer-text:   #c8d6f0;
  /* #7a9cbf on #040810 = 5.1:1 — WCAG AA (was #536a8c = 3.9:1) */
  --de-footer-muted:  #7a9cbf;
  --de-footer-border: rgba(255, 255, 255, 0.06);
}


/* ============================================================
 * 3. RESET & BASE
 * ============================================================ */

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: 'Lexend', 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--de-bg);
  color: var(--de-text);
  line-height: 1.6;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Smooth theme switching — only animate the properties that change */
body,
.de-navbar,
.de-card,
.de-section,
.de-section-alt,
.de-mobile-drawer {
  transition:
    background-color 0.25s ease,
    color            0.25s ease,
    border-color     0.25s ease;
}

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

a {
  color: inherit;
}

button {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}


/* ============================================================
 * 4. TYPOGRAPHY SCALE
 * All headings use Lexend; body text falls through to Inter.
 * Sizes use clamp() for fluid scaling between breakpoints.
 * ============================================================ */

.de-display {
  font-family: 'Lexend', sans-serif;
  font-weight: 800;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--de-navy);
}
[data-theme="dark"] .de-display {
  color: var(--de-text);
}

.de-h1 {
  font-family: 'Lexend', sans-serif;
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--de-navy);
}
[data-theme="dark"] .de-h1 {
  color: var(--de-text);
}

.de-h2 {
  font-family: 'Lexend', sans-serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--de-navy);
}
[data-theme="dark"] .de-h2 {
  color: var(--de-text);
}

.de-h3 {
  font-family: 'Lexend', sans-serif;
  font-weight: 600;
  font-size: clamp(1.2rem, 2.5vw, 1.75rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--de-navy);
}
[data-theme="dark"] .de-h3 {
  color: var(--de-text);
}

/* Eyebrow / category label */
.de-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--de-blue);
}

/* Body sizes */
.de-body-lg {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--de-text-muted);
}

.de-body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--de-text-muted);
}


/* ============================================================
 * 5. CONTAINER & GRID
 * ============================================================ */

.de-container {
  width: 100%;
  max-width: var(--de-container);
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .de-container { padding: 0 1.25rem; }
}
@media (min-width: 1024px) {
  .de-container { padding: 0 1.5rem; }
}
@media (min-width: 1440px) {
  .de-container { padding: 0 1.75rem; }
}

/* ── Responsive grids ─────────────────────────────────────── */

/* 2-column: 1 col on mobile, 2 from 640px */
.de-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 640px) {
  .de-grid-2 { grid-template-columns: repeat(2, 1fr); }
}

/* 3-column: 1 col on mobile, 2 from 640px, 3 from 1024px */
.de-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 640px) {
  .de-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .de-grid-3 { grid-template-columns: repeat(3, 1fr); }
}

/* 4-column: 1 col on mobile, 2 from 640px, 4 from 1024px */
.de-grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 640px) {
  .de-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .de-grid-4 { grid-template-columns: repeat(4, 1fr); }
}


/* ============================================================
 * 6. NAVBAR
 * Fixed top bar with scroll-shrink, desktop dropdown mega-menu,
 * mobile drawer, theme toggle, and CTA button.
 * ============================================================ */

/* ── Main bar ─────────────────────────────────────────────── */
.de-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--de-nav-h);
  background: var(--de-nav-bg);
  border-bottom: 1px solid var(--de-nav-border);
  box-shadow: var(--de-shadow-sm);
  transition:
    background   0.25s ease,
    box-shadow   0.25s ease,
    height       0.3s  ease,
    border-color 0.25s ease;
  display: flex;
  align-items: center;
}

/* Shrinks slightly after user scrolls */
.de-navbar.scrolled {
  box-shadow: var(--de-shadow);
  height: 60px;
}

/* Inner flex wrapper */
.de-navbar-inner {
  width: 100%;
  max-width: var(--de-container);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
@media (min-width: 1024px) {
  .de-navbar-inner { padding: 0 2rem; }
}

/* ── Logo ─────────────────────────────────────────────────── */
.de-nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  flex-shrink: 0;
}

.de-nav-logo img {
  height: 40px;
  width: auto;
  display: block;
  transition: filter 0.25s ease;
}

/* Invert the colour logo to white-on-dark in dark mode */
[data-theme="dark"] .de-nav-logo img {
  filter: brightness(0) invert(1);
}

.de-nav-logo-name {
  font-family: 'Lexend', sans-serif;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--de-navy);
  line-height: 1;
  letter-spacing: -0.01em;
}
[data-theme="dark"] .de-nav-logo-name {
  color: var(--de-text);
}

/* ── Desktop nav links ────────────────────────────────────── */
.de-nav-links {
  display: none;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
@media (min-width: 1024px) {
  .de-nav-links { display: flex; }
}

.de-nav-link {
  font-family: 'Lexend', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--de-nav-text);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: var(--de-radius);
  transition: var(--de-transition);
  white-space: nowrap;
  position: relative;
}
.de-nav-link:hover {
  color: var(--de-nav-hover);
  background: rgba(0, 61, 143, 0.07);
}
.de-nav-link.active {
  color: var(--de-nav-active);
  font-weight: 700;
}
[data-theme="dark"] .de-nav-link:hover {
  background: rgba(122, 184, 255, 0.1);
}

/* ── Dropdown trigger ─────────────────────────────────────── */
.de-nav-dropdown {
  position: relative;
}
.de-nav-dropdown > .de-nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.de-nav-dropdown > .de-nav-link svg {
  transition: transform 0.2s ease;
  width: 14px;
  height: 14px;
}
.de-nav-dropdown:hover > .de-nav-link svg,
.de-nav-dropdown:focus-within > .de-nav-link svg {
  transform: rotate(180deg);
}

/* ── Mega-menu dropdown panel ─────────────────────────────── */
.de-dropdown-panel {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 640px;
  background: var(--de-bg-card);
  border: 1px solid var(--de-border);
  border-radius: var(--de-radius-lg);
  box-shadow: var(--de-shadow-lg);
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity    0.2s ease,
    visibility 0.2s ease,
    transform  0.2s ease;
}
[data-theme="dark"] .de-dropdown-panel {
  background: #111c2e;
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 48px rgba(0,0,0,0.6);
}
.de-nav-dropdown:hover .de-dropdown-panel,
.de-nav-dropdown:focus-within .de-dropdown-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* ── Sector grid inside dropdown ──────────────────────────── */
.de-sector-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.de-sector-tile {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem;
  border-radius: var(--de-radius);
  text-decoration: none;
  color: var(--de-text);
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: 'Lexend', sans-serif;
  transition: var(--de-transition);
  white-space: nowrap;
}
.de-sector-tile:hover {
  background: var(--de-bg-subtle);
  color: var(--de-blue);
}
[data-theme="dark"] .de-sector-tile:hover {
  background: rgba(96, 165, 250, 0.08);
}

.de-sector-tile .de-sector-icon {
  width: 32px;
  height: 32px;
  background: rgba(0, 89, 187, 0.08);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
  color: var(--de-blue);
}
[data-theme="dark"] .de-sector-tile .de-sector-icon {
  background: rgba(96, 165, 250, 0.1);
}

/* ── Right side: CTA + auth + theme toggle ────────────────── */
.de-nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

/* ── Theme toggle button ──────────────────────────────────── */
.de-theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid var(--de-border);
  background: transparent;
  color: var(--de-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: var(--de-transition);
  flex-shrink: 0;
}
.de-theme-toggle:hover {
  background: var(--de-bg-subtle);
  color: var(--de-blue);
  border-color: var(--de-blue);
}

/* Sun icon visible only in dark mode; moon icon visible in light mode */
.de-theme-toggle .icon-sun  { display: none; }
.de-theme-toggle .icon-moon { display: flex; }
[data-theme="dark"] .de-theme-toggle .icon-sun  { display: flex; }
[data-theme="dark"] .de-theme-toggle .icon-moon { display: none; }

/* ── Mobile hamburger ─────────────────────────────────────── */
.de-nav-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--de-radius);
  transition: var(--de-transition);
}
@media (min-width: 1024px) {
  .de-nav-hamburger { display: none; }
}

.de-nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--de-nav-text);
  border-radius: 2px;
  transition: var(--de-transition);
}

/* Animated X when drawer is open */
.de-nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.de-nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.de-nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ── Mobile drawer ────────────────────────────────────────── */
.de-mobile-drawer {
  position: fixed;
  top: var(--de-nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background: var(--de-bg-card);
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--de-border);
}
.de-mobile-drawer.open {
  transform: translateX(0);
}

.de-mobile-drawer-body {
  flex: 1;
  padding: 1.5rem 1.25rem;
  overflow-y: auto;
}
.de-mobile-drawer-footer {
  padding: 1.25rem;
  border-top: 1px solid var(--de-border);
}

/* ── Mobile nav items ─────────────────────────────────────── */
.de-mobile-nav-item {
  border-bottom: 1px solid var(--de-border);
}

.de-mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  font-family: 'Lexend', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--de-text);
  text-decoration: none;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}
.de-mobile-nav-link svg {
  transition: transform 0.2s ease;
  color: var(--de-text-muted);
}
.de-mobile-nav-link.open svg {
  transform: rotate(180deg);
}

/* Collapsible sub-nav inside mobile drawer */
.de-mobile-subnav {
  display: none;
  padding: 0.5rem 0 1rem 0;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem;
}
.de-mobile-subnav.open {
  display: grid;
}

.de-mobile-sub-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--de-radius);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  /* Uses fixed token: #344563 on #ffffff = 7.8:1 */
  color: var(--de-text-muted);
  transition: var(--de-transition);
}
.de-mobile-sub-link:hover {
  background: var(--de-bg-subtle);
  color: var(--de-nav-active);
}

/* Stack sub-links on very small phones */
@media (max-width: 480px) {
  .de-mobile-subnav { grid-template-columns: 1fr; }
}

/* ── Spacer to push page content below the fixed navbar ───── */
.de-nav-spacer {
  height: var(--de-nav-h);
}


/* ============================================================
 * 7. BUTTONS
 * ============================================================ */

/* ── Shared surface and shell utilities ─────────────────── */
.de-shell {
  background: linear-gradient(135deg, rgba(0, 29, 74, 0.94), rgba(0, 89, 187, 0.86));
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 28px;
  box-shadow: 0 20px 60px rgba(2, 6, 23, 0.24);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.de-surface-panel {
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 60px rgba(2, 6, 23, 0.2);
}
.de-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.95rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--de-text);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 29, 74, 0.1);
}
.de-pill-accent {
  background: rgba(0, 204, 255, 0.12);
  border-color: rgba(0, 204, 255, 0.24);
  color: #00CCFF;
}
.de-pill-soft {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
  color: rgba(226, 242, 255, 0.92);
}
.de-stat-card {
  padding: 1rem 1.1rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.de-stat-card .value {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
}
.de-stat-card .label {
  font-size: 0.73rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(184, 214, 244, 0.78);
}
.de-surface-card {
  background: var(--de-bg-card);
  border: 1px solid var(--de-border);
  border-radius: 22px;
  box-shadow: 0 12px 40px rgba(0, 29, 74, 0.08);
}
[data-theme="dark"] .de-surface-card {
  background: rgba(15, 24, 41, 0.9);
  border-color: rgba(255, 255, 255, 0.08);
}
.de-surface-card .title {
  color: var(--de-navy);
}
[data-theme="dark"] .de-surface-card .title {
  color: var(--de-text);
}
.de-surface-card .copy {
  color: var(--de-text-muted);
}

/* ── Base button ──────────────────────────────────────────── */
.de-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Lexend', sans-serif;
  font-weight: 700;
  border-radius: var(--de-radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: var(--de-transition);
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  line-height: 1;
}
.de-btn:focus-visible {
  outline: 3px solid var(--de-blue);
  outline-offset: 3px;
}

/* ── Variants ─────────────────────────────────────────────── */
.de-btn-primary {
  background: var(--de-blue);
  color: #ffffff;
  border-color: var(--de-blue);
  box-shadow: 0 4px 14px rgba(0, 89, 187, 0.3);
}
.de-btn-primary:hover {
  background: #004aad;
  border-color: #004aad;
  box-shadow: 0 6px 20px rgba(0, 89, 187, 0.45);
  transform: translateY(-1px);
  color: #ffffff;
}
.de-btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.de-btn-outline {
  background: transparent;
  color: var(--de-blue);
  border-color: var(--de-blue);
}
.de-btn-outline:hover {
  background: var(--de-blue);
  color: #ffffff;
  transform: translateY(-1px);
}

.de-btn-ghost {
  background: transparent;
  color: var(--de-text);
  border-color: var(--de-border);
}
.de-btn-ghost:hover {
  background: var(--de-bg-subtle);
  border-color: var(--de-text-muted);
}

/* ── Sizes ────────────────────────────────────────────────── */
.de-btn-sm  { padding: 0.5rem 1rem;       font-size: 0.8125rem; }
.de-btn-lg  { padding: 1rem 2rem;         font-size: 1rem;      }
.de-btn-xl  { padding: 1.125rem 2.5rem;   font-size: 1.0625rem; }
.de-btn-full { width: 100%; justify-content: center; }

/* ── Navbar CTA (compact, inline) ────────────────────────── */
.de-nav-cta {
  background: var(--de-blue);
  color: #ffffff !important;
  border: none;
  padding: 0.5625rem 1.25rem;
  border-radius: var(--de-radius);
  font-family: 'Lexend', sans-serif;
  font-weight: 700;
  font-size: 0.8125rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  white-space: nowrap;
  transition: var(--de-transition);
  box-shadow: 0 2px 8px rgba(0, 89, 187, 0.25);
}
.de-nav-cta:hover {
  background: #004aad;
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(0, 89, 187, 0.4);
  transform: translateY(-1px);
}


/* ============================================================
 * 8. CARDS & BADGES
 * ============================================================ */

/* ── Base card ────────────────────────────────────────────── */
.de-card {
  background: var(--de-bg-card);
  border: 1px solid var(--de-border);
  border-radius: var(--de-radius-lg);
  padding: 1.125rem;
  box-shadow: var(--de-shadow-sm);
  transition: var(--de-transition-slow);
}
.de-card:hover {
  box-shadow: var(--de-shadow);
  transform: translateY(-3px);
  border-color: rgba(0, 89, 187, 0.2);
}

/* ── Feature card (adds animated top-border gradient on hover) */
.de-card-feature {
  position: relative;
  overflow: hidden;
}
.de-card-feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--de-blue), var(--de-cyan));
  opacity: 0;
  transition: opacity 0.25s ease;
}
.de-card-feature:hover::before {
  opacity: 1;
}

/* ── Icon box (used inside cards) ────────────────────────── */
.de-icon-box {
  width: 48px;
  height: 48px;
  background: rgba(0, 89, 187, 0.08);
  border-radius: var(--de-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  color: var(--de-blue);
  flex-shrink: 0;
  margin-bottom: 1rem;
}
[data-theme="dark"] .de-icon-box {
  background: rgba(96, 165, 250, 0.1);
  color: var(--de-blue);
}

/* ── Badges ───────────────────────────────────────────────── */
.de-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--de-radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.de-badge-success {
  background: rgba(22, 163, 74, 0.1);
  color: #16a34a;
}
.de-badge-blue {
  background: rgba(0, 89, 187, 0.1);
  color: var(--de-blue);
}
.de-badge-navy {
  background: rgba(0, 29, 74, 0.08);
  color: var(--de-navy);
}
[data-theme="dark"] .de-badge-navy {
  background: rgba(173, 199, 255, 0.1);
  color: var(--de-navy);
}


/* ============================================================
 * 9. SECTIONS & HERO
 * ============================================================ */

/* ── Standard section ─────────────────────────────────────── */
.de-section {
  padding: clamp(2rem, 4vw, 3.25rem) 0;
  background: var(--de-bg);
}

/* ── Alternate (light tint) ───────────────────────────────── */
.de-section-alt {
  padding: clamp(2rem, 4vw, 3.25rem) 0;
  background: var(--de-bg-section);
}

/* ── Dark section (navy background, light text) ───────────── */
.de-section-dark {
  padding: clamp(2rem, 4vw, 3.25rem) 0;
  background: var(--de-navy);
  color: #ffffff;
}

/* Ensure dark mode surfaces use correct vars */
[data-theme="dark"] .de-section     { background: var(--de-bg); }
[data-theme="dark"] .de-section-alt { background: var(--de-bg-section); }

/* ── Hero ─────────────────────────────────────────────────── */
.de-hero {
  position: relative;
  min-height: min(88svh, 760px);
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #f0f6ff 0%, #f8f9fa 40%, #eef5ff 100%);
  overflow: hidden;
  padding: clamp(4.5rem, 8vw, 5.5rem) 0 clamp(2rem, 4vw, 3rem);
}
[data-theme="dark"] .de-hero {
  background: linear-gradient(135deg, #080e1a 0%, #0a1428 50%, #060c18 100%);
}

/* Subtle grid pattern over hero background */
.de-hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 89, 187, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 89, 187, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  /* Fade out toward edges to keep it subtle */
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}
[data-theme="dark"] .de-hero-grid-bg {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

/* Content sits above the grid bg */
.de-hero-content {
  position: relative;
  z-index: 1;
}

/* ── Eyebrow pill ─────────────────────────────────────────── */
.de-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: rgba(0, 89, 187, 0.08);
  border: 1px solid rgba(0, 89, 187, 0.15);
  border-radius: var(--de-radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--de-blue);
  margin-bottom: 1.5rem;
}
[data-theme="dark"] .de-eyebrow {
  background: rgba(96, 165, 250, 0.1);
  border-color: rgba(96, 165, 250, 0.2);
}

/* ── Trust indicator strip below hero CTA ────────────────── */
.de-trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.de-trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--de-text-muted);
}

.de-trust-item .check {
  width: 18px;
  height: 18px;
  background: rgba(22, 163, 74, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--de-success);
  font-size: 0.625rem;
  flex-shrink: 0;
}


/* ============================================================
 * 10. ANNOUNCEMENT BAR
 * Sits above the navbar (z-index: 1001) and can be dismissed.
 * ============================================================ */

.de-announcement-bar {
  background: var(--de-navy);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 36px;
  position: relative;
  z-index: 1001;
}

.de-announcement-bar a {
  color: var(--de-cyan);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.de-announcement-bar a:hover {
  color: #ffffff;
}

/* Dismiss × button */
.de-announcement-dismiss {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.5);
  font-size: 1rem;
  line-height: 1;
  padding: 0.25rem;
  transition: color 0.2s ease;
}
.de-announcement-dismiss:hover {
  color: #ffffff;
}

[data-theme="dark"] .de-announcement-bar {
  background: #030710;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}


/* ============================================================
 * 11. FOOTER
 * Dark background, 4-column grid, collapses on mobile.
 * ============================================================ */

.de-footer {
  background: var(--de-footer-bg);
  color: var(--de-footer-text);
  padding: 4rem 0 0;
  margin-top: auto;
}

/* ── 4-col grid: brand | links | links | links ────────────── */
.de-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--de-footer-border);
}
@media (max-width: 1024px) {
  .de-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}
@media (max-width: 640px) {
  .de-footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}

/* ── Brand column ─────────────────────────────────────────── */
.de-footer-brand-logo {
  height: 44px;
  width: auto;
  margin-bottom: 1rem;
  /* Always white in the dark footer */
  filter: brightness(0) invert(1);
}

.de-footer-tagline {
  font-size: 0.875rem;
  color: var(--de-footer-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

/* ── Column headings ──────────────────────────────────────── */
.de-footer-col-title {
  font-family: 'Lexend', sans-serif;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 1rem;
}

/* ── Footer link lists ────────────────────────────────────── */
.de-footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.de-footer-links a {
  font-size: 0.875rem;
  color: var(--de-footer-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.de-footer-links a:hover {
  color: var(--de-footer-text);
}

/* ── Bottom bar: copyright + legal links ──────────────────── */
.de-footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1.25rem 0;
  font-size: 0.78rem;
  color: var(--de-footer-muted);
}

.de-footer-legal-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.de-footer-legal-links a {
  color: var(--de-footer-muted);
  text-decoration: none;
}
.de-footer-legal-links a:hover {
  color: var(--de-footer-text);
}

/* ── Social icon links ────────────────────────────────────── */
.de-social-links {
  display: flex;
  gap: 0.625rem;
  margin-top: 1rem;
}

.de-social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--de-footer-muted);
  font-size: 0.875rem;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}
.de-social-link:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}


/* ============================================================
 * 12. SECTOR CARDS
 * Used on the homepage "industries we serve" grid.
 * ============================================================ */

.de-sector-card {
  background: var(--de-bg-card);
  border: 1px solid var(--de-border);
  border-radius: var(--de-radius-lg);
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
  color: var(--de-text);
  transition: var(--de-transition-slow);
  cursor: pointer;
}
.de-sector-card:hover {
  border-color: rgba(0, 89, 187, 0.3);
  box-shadow: var(--de-shadow);
  transform: translateY(-4px);
  color: var(--de-blue);
}
[data-theme="dark"] .de-sector-card:hover {
  border-color: rgba(96, 165, 250, 0.3);
}

/* Icon circle */
.de-sector-card .icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(
    135deg,
    rgba(0, 89, 187, 0.08),
    rgba(0, 89, 187, 0.04)
  );
  border-radius: var(--de-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--de-blue);
  margin-bottom: 0.875rem;
  transition: var(--de-transition);
}
[data-theme="dark"] .de-sector-card .icon {
  background: rgba(96, 165, 250, 0.08);
}
.de-sector-card:hover .icon {
  background: linear-gradient(
    135deg,
    rgba(0, 89, 187, 0.15),
    rgba(0, 89, 187, 0.08)
  );
}
[data-theme="dark"] .de-sector-card:hover .icon {
  background: rgba(96, 165, 250, 0.15);
}

.de-sector-card .title {
  font-family: 'Lexend', sans-serif;
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.de-sector-card .desc {
  font-size: 0.78rem;
  color: var(--de-text-light);
  line-height: 1.5;
}


/* ============================================================
 * 13. SCROLL ANIMATIONS
 * Add .de-reveal to any element; JavaScript should add
 * .visible when it enters the viewport.
 * ============================================================ */

.de-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity   0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.de-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger helpers */
.de-reveal-delay-1 { transition-delay: 0.1s; }
.de-reveal-delay-2 { transition-delay: 0.2s; }
.de-reveal-delay-3 { transition-delay: 0.3s; }
.de-reveal-delay-4 { transition-delay: 0.4s; }


/* ============================================================
 * 14. UTILITY CLASSES
 * ============================================================ */

/* Horizontal rule */
.de-divider {
  border: none;
  border-top: 1px solid var(--de-border);
  margin: 2rem 0;
}

/* Gradient text — navy to blue */
.de-text-gradient {
  background: linear-gradient(135deg, var(--de-navy), var(--de-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Full-width dark hero gradient background */
.de-bg-gradient-hero {
  background: linear-gradient(135deg, var(--de-navy) 0%, #003a8c 100%);
}

/* Frosted glass surface */
.de-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.6);
}
[data-theme="dark"] .de-glass {
  background: rgba(8, 14, 26, 0.7);
  border-color: rgba(255, 255, 255, 0.06);
}

/* Quick layout helpers */
.de-flex        { display: flex; }
.de-flex-center { display: flex; align-items: center; justify-content: center; }
.de-flex-between{ display: flex; align-items: center; justify-content: space-between; }
.de-flex-col    { display: flex; flex-direction: column; }

.de-gap-1 { gap: 0.25rem; }
.de-gap-2 { gap: 0.5rem;  }
.de-gap-3 { gap: 0.75rem; }
.de-gap-4 { gap: 1rem;    }
.de-gap-6 { gap: 1.5rem;  }
.de-gap-8 { gap: 2rem;    }

.de-text-center { text-align: center; }
.de-text-left   { text-align: left;   }
.de-text-right  { text-align: right;  }

.de-mt-auto { margin-top: auto; }
.de-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/* ============================================================
 * 15. RESPONSIVE OVERRIDES
 * ============================================================ */

/* ── 320px — Absolute minimum ──────────────────────────────── */
@media (max-width: 360px) {
  .de-container { padding: 0 0.875rem; }
  .de-btn-xl    { padding: 0.875rem 1.5rem; font-size: 0.9375rem; }
  .de-hero      { padding-top: 5.5rem; }
}

/* ── 2xl screens (1536px+) ─────────────────────────────────── */
@media (min-width: 1536px) {
  :root { --de-container: 1440px; }
}

/* ── Wide (1920px+) ────────────────────────────────────────── */
@media (min-width: 1920px) {
  :root { --de-container: 1400px; }
  .de-section     { padding: 3.5rem 0; }
  .de-section-alt { padding: 3.5rem 0; }
}

/* ── Ultra-wide (2560px+) ──────────────────────────────────── */
@media (min-width: 2560px) {
  :root { --de-container: 1800px; }
}


/* ============================================================
 * 16. REDUCED-MOTION OVERRIDES
 * Respects the OS-level "reduce motion" preference.
 * All transitions and animations are collapsed to instant.
 * ============================================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }

  /* Reveal elements become immediately visible */
  .de-reveal {
    opacity: 1;
    transform: none;
  }

  /* Remove lift effects on hover */
  .de-btn-primary:hover,
  .de-btn-outline:hover,
  .de-nav-cta:hover,
  .de-card:hover,
  .de-sector-card:hover {
    transform: none;
  }

  /* Disable the hamburger animation */
  .de-nav-hamburger span,
  .de-nav-hamburger.open span:nth-child(1),
  .de-nav-hamburger.open span:nth-child(3) {
    transition: none;
  }

  /* Keep the mobile drawer functional but instant */
  .de-mobile-drawer {
    transition: none;
  }

  /* Stop the dropdown from animating */
  .de-dropdown-panel {
    transition: none;
  }
}