/* ==========================================================================
   Draft Mechanical Ltd - Modern Professional Website Styles
   ========================================================================== */

/* CSS Custom Properties - Modern Design System */
:root {
  /* Background and Surface Layers - Light Theme */
  --bg: #FFFFFF;                    /* Primary background - white */
  --surface: #F1F5F9;               /* Card/surface background - light gray */
  --panel: #E7EEF7;                 /* Panel/elevated surface - lighter gray */
  --overlay: rgba(15, 23, 42, 0.8); /* Modal/overlay background */
  
  /* Text Colors - Dark on Light */
  --text: #0F172A;                  /* Primary text - dark slate */
  --text-muted: #1F2937;            /* Slightly darker for AA on light */
  --text-subtle: #4B5563;           /* Adjusted to maintain contrast */
  
  /* Brand Colors - Blue Accent Theme */
  --brand-primary: #0B3B66;         /* Primary blue brand color */
  --brand-secondary: #06244F;       /* Darker blue */
  --accent: #1B4C9C;                /* Primary accent blue */
  --accent-contrast: #F5FAFF;       /* Light contrast for accent */
  --accent-hover: #153E7A;          /* Darker blue for hover */
  --accent-pressed: #0F2F57;        /* Even darker blue for active */
  
  /* Status Colors - Accessible on Light */
  --success: #059669;               /* Success green */
  --warning: #D97706;               /* Warning orange */
  --error: #DC2626;                 /* Error red */
  --info: #0284C7;                  /* Info blue */
  
  /* Borders and Dividers */
  --border: #CFD9E6;                /* Strengthened for AA separation */
  --border-subtle: #E2E8F0;         /* Subtle border */
  --border-hover: #9DB2CE;          /* Hover border more visible */
  
  /* Focus and Interactive States */
  --ring: #60A5FA;                  /* Focus ring color - light blue */
  --ring-offset: var(--bg);         /* Focus ring offset */
  
  /* Typography Scale - Responsive */
  --font-family-primary: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  
  /* Responsive Font Sizes */
  --font-size-xs: 0.75rem;          /* 12px */
  --font-size-sm: 0.875rem;         /* 14px */
  --font-size-base: 1rem;           /* 16px */
  --font-size-lg: 1.125rem;         /* 18px */
  --font-size-xl: 1.25rem;          /* 20px */
  --font-size-2xl: 1.5rem;          /* 24px */
  --font-size-3xl: 1.875rem;        /* 30px */
  --font-size-4xl: 2.25rem;         /* 36px */
  --font-size-5xl: 3rem;            /* 48px */
  --font-size-6xl: 3.75rem;         /* 60px */
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  
  /* Spacing Scale - 8px Grid */
  --space-1: 0.25rem;               /* 4px */
  --space-2: 0.5rem;                /* 8px */
  --space-3: 0.75rem;               /* 12px */
  --space-4: 1rem;                  /* 16px */
  --space-5: 1.25rem;               /* 20px */
  --space-6: 1.5rem;                /* 24px */
  --space-8: 2rem;                  /* 32px */
  --space-10: 2.5rem;               /* 40px */
  --space-12: 3rem;                 /* 48px */
  --space-16: 4rem;                 /* 64px */
  --space-20: 5rem;                 /* 80px */
  --space-24: 6rem;                 /* 96px */
  --space-32: 8rem;                 /* 128px */
  
  /* Layout */
  --container-max-width: 1280px;    /* Increased max width */
  --container-padding: var(--space-6);
  --header-height: 80px;
  
  /* Border Radius */
  --radius: 14px;                   /* Primary radius */
  --radius-sm: 8px;                 /* Small radius */
  --radius-lg: 20px;                /* Large radius */
  --radius-full: 9999px;            /* Full radius */
  
  /* Shadows - Modern Depth */
  --shadow: 0 14px 32px rgba(8, 29, 61, 0.16);
  --shadow-sm: 0 2px 10px rgba(8, 29, 61, 0.08);
  --shadow-lg: 0 24px 48px rgba(8, 29, 61, 0.22);
  --shadow-inner: inset 0 2px 4px rgba(8, 29, 61, 0.06);

  /* Footer palette */
  --footer-bg: #061B33;
  --footer-text: #E2E8F0;
  --footer-muted: #94A3B8;
  --footer-border: rgba(148, 163, 184, 0.2);
  
  /* Transitions - Respect Reduced Motion */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* Light Theme Override (Optional) */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #FFFFFF;
    --surface: #F1F5F9;
    --panel: #E7EEF7;
    --text: #0F172A;
    --text-muted: #1F2937;
    --text-subtle: #4B5563;
    --border: #CFD9E6;
    --border-subtle: #E2E8F0;
    --border-hover: #9DB2CE;
    --ring-offset: var(--bg);
  }
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeSpeed;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  body {
    --border: currentColor;
    --border-subtle: currentColor;
  }
}

/* Skip link removed site-wide */

/* ==========================================================================
   Typography - Modern Responsive Scale
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--text);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: 800;
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  font-weight: 700;
  letter-spacing: -0.03em;
}

h3 {
  font-size: clamp(var(--font-size-xl), 3vw, var(--font-size-3xl));
  font-weight: 600;
  letter-spacing: -0.02em;
}

h4 {
  font-size: clamp(var(--font-size-lg), 2.5vw, var(--font-size-2xl));
  font-weight: 600;
}

h5 {
  font-size: clamp(var(--font-size-base), 2vw, var(--font-size-xl));
  font-weight: 500;
}

h6 {
  font-size: var(--font-size-lg);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
  color: var(--text-muted);
}

/* Enhanced link styles */
a {
  color: var(--accent);
  text-decoration: none;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
  outline-offset: 2px;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

a:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  text-decoration: none;
}

a:active {
  color: var(--accent-pressed);
}

/* High contrast link support */
@media (prefers-contrast: high) {
  a {
    text-decoration: underline;
  }
}

/* Lists */
ul, ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
  line-height: var(--line-height-relaxed);
  color: var(--text-muted);
}

/* Focus styles for accessibility - Enhanced */
*:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Remove focus outline for mouse users */
*:focus:not(:focus-visible) {
  outline: none;
}

/* Text utilities */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-muted { color: var(--text-muted); }
.text-subtle { color: var(--text-subtle); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }

/* ==========================================================================
   Layout Components - Modern Grid System
   ========================================================================== */

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

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-12);
  }
}

.section {
  padding: var(--space-16) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-20) 0;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: var(--space-24) 0;
  }
}

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

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

.section__header {
  max-width: 760px;
  margin: 0 auto var(--space-12);
  text-align: center;
}

.section__header.section__header--left {
  text-align: left;
  margin-left: 0;
}

.section__eyebrow {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.section__title {
  margin-bottom: var(--space-4);
}

.section__subtitle {
  color: var(--text-muted);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
}

.bg-primary .section__eyebrow {
  color: rgba(245, 250, 255, 0.8);
}

.bg-primary .section__subtitle {
  color: rgba(245, 250, 255, 0.75);
}

/* Modern utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Enhanced Spacing utilities - ensures no touching elements */
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-20 { margin-bottom: var(--space-20); }
.mb-24 { margin-bottom: var(--space-24); }
.mb-lg { margin-bottom: var(--space-8); }
.mb-xl { margin-bottom: var(--space-12); }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-prose { max-width: 65ch; }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mt-20 { margin-top: var(--space-20); }
.mt-md { margin-top: var(--space-6); }
.mt-lg { margin-top: var(--space-8); }

.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }
.p-12 { padding: var(--space-12); }
.p-lg { padding: var(--space-8); }
.pt-md { padding-top: var(--space-6); }
.pb-md { padding-bottom: var(--space-6); }
.pl-6 { padding-left: var(--space-6); }
.py-sm { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-md { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.px-md { padding-left: var(--space-6); padding-right: var(--space-6); }

/* Compound margin utilities */
.my-4 { margin-top: var(--space-4); margin-bottom: var(--space-4); }
.my-8 { margin-top: var(--space-8); margin-bottom: var(--space-8); }
.my-md { margin-top: var(--space-6); margin-bottom: var(--space-6); }

/* Content separation utilities */
.content-gap { margin-bottom: var(--space-16); }
.content-gap-lg { margin-bottom: var(--space-24); }

/* Ensure spacing is handled by grid/flex gaps (no extra sibling margins) */
/* Removed sibling margin to prevent misalignment within grids */

/* Screen reader only */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Modern Grid System with Better Spacing */
.grid {
  display: grid;
  gap: var(--space-8); /* Increased gap for better spacing */
}

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

.grid--2 {
  grid-template-columns: 1fr;
  gap: var(--space-8); /* Ensure consistent spacing */
}

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-10); /* Larger gap on wider screens */
  }
}

.grid--3 {
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-10); /* Even larger gap for 3 columns */
  }
}

.grid--4 {
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-10); /* Consistent larger gap */
  }
}

/* ==========================================================================
   Header & Navigation - Modern Design
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: var(--z-sticky);
  height: var(--header-height);
  display: flex;              /* center header__container vertically */
  align-items: center;        /* vertically center children */
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  /* Rely on .container paddings per breakpoint for uniform spacing */
  padding: 0;
  gap: clamp(var(--space-4), 4vw, var(--space-12)); /* ensure space between logo and nav */
}

.header__logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: var(--letter-spacing-tight);
  transition: all var(--transition-fast);
}

.header__logo:hover,
.header__logo:focus-visible {
  color: var(--accent-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

ul.nav__list {
  display: flex;
  list-style: none;
  gap: var(--space-6);
  align-items: center; /* vertically center contents */
  margin: 0;           /* remove default UL margins */
  padding: 0;          /* remove default UL padding */
}

.nav__item {
  position: relative;
  margin: 0; /* normalize: no margins on nav items */
}

.nav__link {
  display: inline-flex; /* center vertically */
  align-items: center;
  padding: var(--space-2) var(--space-4); /* reduced vertical padding */
  color: var(--text-muted);
  font-weight: 500;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--text);
  background-color: var(--surface);
  border-color: var(--border-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.nav__link--active {
  color: var(--accent);
  /* Soft accent tint for active state (derived from --accent) */
  background-color: rgba(27, 76, 156, 0.12);
  border-color: var(--accent);
}

/* Mobile menu toggle - Enhanced */
.nav-toggle {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: var(--space-3);
  font-size: var(--font-size-lg);
  color: var(--text);
  transition: all var(--transition-fast);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background-color: var(--panel);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

/* Dropdown menu - Modern */
.nav__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  min-width: 240px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
}

.nav__item:hover .nav__dropdown,
.nav__item:focus-within .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown-item {
  list-style: none;
}

.nav__dropdown-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.nav__dropdown-link:hover,
.nav__dropdown-link:focus-visible {
  background-color: var(--surface);
  color: var(--text);
  text-decoration: none;
  transform: translateX(4px);
}

/* ==========================================================================
   Buttons - Modern & Accessible
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: inherit;
  text-align: center;
  text-decoration: none;
  line-height: 1;
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px; /* Accessible touch target */
  position: relative;
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* Primary button */
.btn--primary {
  background: linear-gradient(135deg, var(--accent) 0%, #225EB5 100%);
  color: var(--accent-contrast);
  border-color: transparent;
  box-shadow: 0 8px 18px rgba(18, 54, 104, 0.25);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--accent-hover) 0%, #1E55A3 100%);
  border-color: transparent;
  color: var(--accent-contrast);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(18, 54, 104, 0.3);
}

.btn--primary:active {
  background: linear-gradient(135deg, var(--accent-pressed) 0%, #173A73 100%);
  border-color: transparent;
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(18, 54, 104, 0.25);
}

/* Secondary button */
.btn--secondary {
  background-color: transparent;
  color: var(--accent);
  border-color: rgba(27, 76, 156, 0.35);
  box-shadow: none;
}

.btn--secondary:hover {
  background-color: rgba(27, 76, 156, 0.08);
  border-color: var(--accent);
  color: var(--accent-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--secondary:active {
  background-color: rgba(27, 76, 156, 0.12);
  transform: translateY(0);
}

/* Accent button */
.btn--accent {
  background: linear-gradient(135deg, #0F2F57 0%, #1B4C9C 100%);
  color: var(--accent-contrast);
  border-color: transparent;
  box-shadow: 0 10px 22px rgba(13, 42, 88, 0.32);
}

.btn--accent:hover {
  background: linear-gradient(135deg, #102A4A 0%, #184385 100%);
  border-color: transparent;
  color: var(--accent-contrast);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(13, 42, 88, 0.35);
}

.btn--accent:active {
  background: linear-gradient(135deg, #0C223C 0%, #132F63 100%);
  border-color: transparent;
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(13, 42, 88, 0.3);
}

/* High-contrast button treatments on primary-colored sections */
.bg-primary .btn--accent {
  background: linear-gradient(135deg, #FFFFFF 0%, #E9F2FF 100%);
  color: var(--accent);
  border-color: transparent;
  box-shadow: 0 12px 28px rgba(11, 27, 51, 0.28);
}

.bg-primary .btn--accent:hover,
.bg-primary .btn--accent:focus-visible {
  background: linear-gradient(135deg, #F8FBFF 0%, #DDEBFF 100%);
  border-color: transparent;
  color: var(--accent-hover);
}

.bg-primary .btn--secondary {
  /* Ghost/outline button with white text on blue background */
  background-color: transparent;
  color: var(--accent-contrast);  /* white */
  border-color: rgba(255, 255, 255, 0.85);
}

.bg-primary .btn--secondary:hover,
.bg-primary .btn--secondary:focus-visible {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: #ffffff;
  color: var(--accent-contrast);
}

/* Button sizes */
.btn--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.btn--small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn--full-width {
  width: 100%;
}

/* Disabled state */
.btn:disabled,
.btn--disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn:disabled:hover,
.btn--disabled:hover {
  transform: none;
}

/* ==========================================================================
   Hero Section - Modern Design
   ========================================================================== */

.hero {
  position: relative;
  background: linear-gradient(135deg, #F8FAFF 0%, #EEF3FA 55%, #E0E9F7 100%);
  color: var(--text);
  padding: var(--space-24) 0 var(--space-20);
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(27, 76, 156, 0.12) 0%, transparent 50%);
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero__title {
  font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
  margin-bottom: var(--space-6);
  color: var(--text);
  font-weight: 800;
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
}

.hero__subtitle {
  font-size: clamp(var(--font-size-lg), 3vw, var(--font-size-2xl));
  margin-bottom: var(--space-8);
  color: var(--text-subtle);
  line-height: var(--line-height-relaxed);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-8);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__eyebrow::before {
  content: '';
  width: 40px;
  height: 1px;
  background-color: currentColor;
  opacity: 0.6;
}

.hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-12);
  list-style: none;
  padding: 0;
}

@media (min-width: 768px) {
  .hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.hero__stats .stat {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  backdrop-filter: blur(6px);
}

.hero__stats .stat__value {
  display: block;
  font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-5xl));
  font-weight: 700;
  color: var(--accent-contrast);
}

.hero__stats .stat__label {
  display: block;
  font-size: var(--font-size-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(245, 250, 255, 0.72);
}

.stat-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .stat-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-align: left;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.stat:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.stat__value {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  font-weight: 700;
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.stat__label {
  display: block;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-subtle);
}

.stat__description {
  margin-top: var(--space-3);
  color: var(--text-muted);
  line-height: var(--line-height-relaxed);
}

.hero--brand {
  background: linear-gradient(120deg, #061834 0%, #0F2F57 45%, #1B4C9C 100%);
  color: var(--accent-contrast);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.hero--brand::before {
  background: radial-gradient(circle at 15% 20%, rgba(102, 192, 252, 0.25) 0%, transparent 55%),
              radial-gradient(circle at 85% 15%, rgba(27, 76, 156, 0.35) 0%, transparent 50%);
}

.hero--brand .hero__title {
  color: var(--accent-contrast);
}

.hero--brand .hero__subtitle {
  color: rgba(245, 250, 255, 0.82);
}

.hero--brand .hero__eyebrow {
  color: rgba(245, 250, 255, 0.75);
}

.hero--brand .hero__eyebrow::before {
  background-color: rgba(245, 250, 255, 0.45);
}

.hero--brand .hero__actions {
  justify-content: center;
}

.hero--brand .btn--secondary {
  color: var(--accent-contrast);
  border-color: rgba(245, 250, 255, 0.38);
}

.hero--brand .btn--secondary:hover,
.hero--brand .btn--secondary:focus-visible {
  background-color: rgba(245, 250, 255, 0.14);
  color: var(--accent-contrast);
  border-color: rgba(245, 250, 255, 0.6);
}

.hero--brand .hero__stats .stat {
  background: rgba(7, 30, 61, 0.45);
  border-color: rgba(245, 250, 255, 0.08);
}

.hero--subpage {
  padding: var(--space-16) 0;
  background: linear-gradient(135deg, #0F2F57 0%, #1B4C9C 60%, #19508A 100%);
  color: var(--accent-contrast);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.hero--subpage::before {
  background: radial-gradient(circle at 20% 20%, rgba(102, 192, 252, 0.15) 0%, transparent 45%);
}

.hero--subpage .hero__content {
  text-align: left;
  max-width: 760px;
  margin-left: 0;
  margin-right: auto;
}

.hero--subpage .hero__title {
  color: var(--accent-contrast);
  font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-5xl));
}

.hero--subpage .hero__subtitle {
  color: rgba(245, 250, 255, 0.78);
  margin-left: 0;
}

.hero--subpage .hero__actions {
  justify-content: flex-start;
}

.hero--subpage .hero__eyebrow {
  color: rgba(245, 250, 255, 0.7);
}

.hero--subpage .hero__eyebrow::before {
  background-color: rgba(245, 250, 255, 0.38);
}

/* ==========================================================================
   Cards & Components - Modern Surface Design
   ========================================================================== */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
  height: 100%;
  display: flex;              /* make card a flex column container */
  flex-direction: column;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(27, 76, 156, 0.85) 0%, rgba(30, 96, 180, 0.65) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.card:hover::before {
  opacity: 1;
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

/* Removed decorative placeholder stripes and labels for missing images */

.card__content {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;            /* fill remaining space under image */
  min-height: 0;             /* allow shrinking in flex layout */
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
  color: var(--text);
  font-weight: 600;
  line-height: var(--line-height-tight);
}

.card__text {
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
  flex-grow: 1;
}

.card__footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

/* Ensure bottom-aligned actions even when not using .card__footer */
.card__content > .btn,
.card__content > .btn-group,
.card__content > .card__actions {
  margin-top: auto;
}

/* Fallback: if markup varies, push the last child to the bottom */
.card__content > *:last-child {
  margin-top: auto;
}

/* Optional helper for multiple actions */
.card__actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

/* Project card meta row (category, year, budget) */
.project-card .card__content > .flex.gap-md.my-md.text-sm.text-gray {
  flex-wrap: wrap;                  /* allow wrapping within card width */
  gap: var(--space-3);              /* tighter gap for compact layout */
  row-gap: var(--space-2);
  align-items: center;
  color: var(--text-subtle);        /* subtler tone for meta */
  max-width: 100%;
}

.project-card .card__content > .flex.gap-md.my-md.text-sm.text-gray > span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full); /* pill style */
  line-height: 1.2;
  color: var(--text-subtle);
  flex: 0 1 auto;
  max-width: 100%;
  min-width: 0;
}

.project-card .card__content > .flex.gap-md.my-md.text-sm.text-gray > span .icon-feature {
  width: 1.25rem;                   /* compact icon chip */
  height: 1.25rem;
  background: transparent !important; /* remove large tile background */
  border: none !important;
  margin: 0;
  color: inherit;                   /* inherit text color by default */
}

/* Preserve semantic colors without the tile background */
.project-card .icon-feature--success { color: var(--success); }
.project-card .icon-feature--accent { color: var(--accent); }

/* Duplicate/legacy grid removed. Use the primary grid system defined earlier
  with tokenized gaps and responsive columns. */

/* ==========================================================================
   Forms - Enhanced Accessibility
   ========================================================================== */

.form {
  max-width: 600px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: var(--space-6);
  position: relative;
}

.form__label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 600;
  color: var(--text);
  font-size: var(--font-size-sm);
}

.form__label--required::after {
  content: ' *';
  color: var(--error);
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: var(--space-4);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--font-size-base);
  background: var(--surface);
  color: var(--text);
  transition: all var(--transition-fast);
  min-height: 48px; /* Accessible touch target */
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  border-color: var(--accent);
  background: var(--bg);
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.form__input:invalid,
.form__textarea:invalid,
.form__select:invalid {
  border-color: var(--error);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
  line-height: var(--line-height-relaxed);
}

.form__error {
  color: var(--error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form__success {
  color: var(--success);
  font-size: var(--font-size-sm);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form__helper {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin-top: var(--space-2);
}

/* Form field states */
.form__group--error .form__input,
.form__group--error .form__textarea,
.form__group--error .form__select {
  border-color: var(--error);
}

.form__group--success .form__input,
.form__group--success .form__textarea,
.form__group--success .form__select {
  border-color: var(--success);
}

/* ==========================================================================
   Footer - Modern Dark Design
   ========================================================================== */

.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: var(--space-20) 0 var(--space-8);
  border-top: 1px solid var(--footer-border);
}

.footer__content {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .footer__content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__content {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer__section h3 {
  color: var(--footer-text);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.footer__section p,
.footer__section li {
  color: var(--footer-muted);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-relaxed);
}

.footer__links {
  list-style: none;
  padding: 0;
}

.footer__links li {
  margin-bottom: var(--space-2);
}

.footer__section a {
  color: var(--footer-muted);
  transition: color var(--transition-fast);
  text-decoration: none;
}

.footer__section a:hover,
.footer__section a:focus-visible {
  color: var(--accent-contrast);
  text-decoration: underline;
}

.footer__social {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  color: var(--footer-text);
  transition: all var(--transition-fast);
}

.footer__social a:hover,
.footer__social a:focus-visible {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--accent-contrast);
  transform: translateY(-1px);
}

.footer__bottom {
  border-top: 1px solid var(--footer-border);
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__utility {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 768px) {
  .footer__utility {
    justify-content: flex-start;
  }
}

.footer__utility a {
  font-size: var(--font-size-sm);
  color: var(--footer-muted);
}

.footer__bottom p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--footer-muted);
}



/* ==========================================================================
   Back to Top Button - Modern Design
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  background: var(--accent);
  color: var(--accent-contrast);
  border: 2px solid var(--border);
  border-radius: var(--radius-full);
  width: 48px;
  height: 48px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  box-shadow: var(--shadow);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: var(--accent-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   Sticky Quote Button (Mobile) - Enhanced
   ========================================================================== */

.sticky-quote {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  right: var(--space-6);
  background: var(--accent);
  color: var(--accent-contrast);
  text-align: center;
  padding: var(--space-4);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-fixed);
  display: none;
  border: 2px solid var(--accent);
  transition: all var(--transition-fast);
}

.sticky-quote:hover,
.sticky-quote:focus-visible {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--accent-contrast);
  text-decoration: none;
  transform: translateY(-1px);
}

/* ==========================================================================
   Animations & Motion - Respect Preferences
   ========================================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in {
  animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-left {
  animation: slideInFromLeft 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up,
  .fade-in,
  .slide-in-left {
    animation: none;
  }
}

/* ==========================================================================
   Responsive Design - Mobile First
   ========================================================================== */

/* Mobile drawer navigation */
@media (max-width: 768px) {
  /* Hide nav-toggle on desktop - ensure it's shown on mobile */
  .nav-toggle {
    display: flex;
  }

  /* Mobile nav overlay */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay);
    opacity: 0;
    visibility: hidden;
    z-index: var(--z-modal-backdrop);
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  /* Mobile full-screen nav container */
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    width: 100vw;
    /* Use dynamic viewport units to avoid iOS Safari 100vh issues */
    height: 100dvh;
    background: var(--surface);
    /* full-screen menu, no side border */
    border: none;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
    /* iOS safe area support */
    padding-top: max(var(--space-16), env(safe-area-inset-top));
    padding-bottom: max(var(--space-8), env(safe-area-inset-bottom));
    padding-left: max(var(--space-6), env(safe-area-inset-left));
    padding-right: max(var(--space-6), env(safe-area-inset-right));
  /* Enable smooth scrolling inside drawer; avoid overscroll bounce */
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  }

  .nav.active {
    transform: translateX(0);
  }

  /* Reset nav list styling for full-screen menu */
  .nav__list {
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* always compact */
    gap: var(--space-1);
    padding: var(--space-6) 0; /* top/bottom rhythm */
    margin: 0;
    list-style: none;
    width: 100%;
    flex: 1 1 auto; /* fill available height */
    min-height: 0; /* allow flex container to size */
  }

  /* Mobile nav items */
  .nav__item {
    width: 100%;
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
  }

  .nav__item:last-child {
    border-bottom: none;
  }

  /* Mobile nav links - consistent touch targets */
  .nav__link {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 56px;
    padding: var(--space-4) var(--space-6);
    color: var(--text);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
  }

  .nav__link:hover,
  .nav__link:focus-visible {
    background: var(--panel);
    color: var(--accent);
    /* Keep layout consistent; avoid shifting */
  }

  .nav__link:focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  .nav__link--active {
    color: var(--accent);
    background: rgba(0, 119, 182, 0.1);
    border-left: 3px solid var(--accent);
    padding-left: var(--space-3);
  }

  /* Submenu toggle button */
  .nav__submenu-toggle {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav__submenu-toggle::after {
    content: "▼";
    font-size: var(--font-size-sm);
    transition: transform var(--transition-fast);
  }

  .nav__submenu-toggle[aria-expanded="true"]::after {
    transform: rotate(180deg);
  }

  .nav__submenu-toggle:hover,
  .nav__submenu-toggle:focus-visible {
    background: var(--panel);
    color: var(--accent);
  }

  .nav__submenu-toggle:focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  /* Mobile submenu/dropdown */
  .nav__dropdown {
    display: none;
    background: var(--panel);
    border-radius: var(--radius-sm);
    margin: var(--space-2) 0 var(--space-4) var(--space-6);
    border-left: 2px solid var(--accent);
    overflow: hidden;
  }

  /* Keep the hamburger visible to close the menu when open */
  .nav-open .nav-toggle {
    position: fixed;
    top: max(var(--space-4), env(safe-area-inset-top));
    right: max(var(--space-4), env(safe-area-inset-right));
    z-index: 9999;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
  }

  .nav__dropdown.active {
    display: block;
  }

  .nav__dropdown-item {
    border-bottom: 1px solid var(--border-subtle);
  }

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

  .nav__dropdown-link {
    display: block;
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
  }

  .nav__dropdown-link:hover,
  .nav__dropdown-link:focus-visible {
    background: var(--surface);
    color: var(--text);
    padding-left: var(--space-6);
  }

  .nav__dropdown-link:focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  /* Body scroll lock */
  .nav-open {
    overflow: hidden;
    /* Prevent layout shift on scroll lock */
    padding-right: var(--scrollbar-width, 0);
    /* Prevent iOS pull-to-refresh within body when drawer is open */
    overscroll-behavior: none;
  }

  /* Remove desktop hover behavior on mobile; touch uses disclosure toggles */

  /* Adjust other mobile styles */
  .hero__title {
    font-size: clamp(var(--font-size-2xl), 6vw, var(--font-size-4xl));
  }

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

  .footer__content {
    grid-template-columns: 1fr;
  }

  .footer__utility {
    flex-direction: column;
    gap: var(--space-3);
  }

  .sticky-quote {
    display: block;
  }

  /* Adjust spacing for mobile */
  .section {
    padding: var(--space-16) 0;
  }

  .container {
    padding: 0 var(--space-4);
  }

  /* Reduce card padding on mobile */
  .card__content {
    padding: var(--space-4);
  }
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .nav,
  .nav-overlay,
  .nav__link,
  .nav__submenu-toggle,
  .nav__dropdown-link {
    transition: none;
  }
}

/* Tablet styles - also use drawer pattern */
@media (min-width: 769px) and (max-width: 1023px) {
  /* Use full-screen menu for tablets too */
  .nav-toggle {
    display: flex;
  }

  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay);
    opacity: 0;
    visibility: hidden;
    z-index: var(--z-modal-backdrop);
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    width: 100vw;
    height: 100dvh;
    background: var(--surface);
    border: none;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
    padding: var(--space-16) var(--space-8) var(--space-8);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav.active {
    transform: translateX(0);
  }

  .nav__list {
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* always compact */
    gap: var(--space-1);
    padding: var(--space-6) 0;
    margin: 0;
    list-style: none;
    width: 100%;
    flex: 1 1 auto;
    min-height: 0;
  }

  .nav__item {
    width: 100%;
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
  }

  .nav__item:last-child {
    border-bottom: none;
  }

  .nav__link {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 56px;
    padding: var(--space-4) var(--space-6);
    color: var(--text);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
  }

  .nav__link:hover,
  .nav__link:focus-visible {
    background: var(--panel);
    color: var(--accent);
    transform: translateX(var(--space-2));
  }

  .nav__link:focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  .nav__link--active {
    color: var(--accent);
    background: rgba(0, 119, 182, 0.1);
    border-left: 3px solid var(--accent);
    padding-left: var(--space-3);
  }

  .nav__submenu-toggle {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav__submenu-toggle::after {
    content: "▼";
    font-size: var(--font-size-sm);
    transition: transform var(--transition-fast);
  }

  .nav__submenu-toggle[aria-expanded="true"]::after {
    transform: rotate(180deg);
  }

  .nav__submenu-toggle:hover,
  .nav__submenu-toggle:focus-visible {
    background: var(--panel);
    color: var(--accent);
  }

  .nav__submenu-toggle:focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  .nav__dropdown {
    display: none;
    background: var(--panel);
    border-radius: var(--radius-sm);
    margin: var(--space-2) 0 var(--space-4) var(--space-4);
    border-left: 2px solid var(--accent);
    overflow: hidden;
  }

  .nav__dropdown.active {
    display: block;
  }

  .nav__dropdown-item {
    border-bottom: 1px solid var(--border-subtle);
  }

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

  .nav__dropdown-link {
    display: block;
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
  }

  .nav__dropdown-link:hover,
  .nav__dropdown-link:focus-visible {
    background: var(--surface);
    color: var(--text);
    padding-left: var(--space-6);
  }

  .nav__dropdown-link:focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  .nav-open {
    overflow: hidden;
    padding-right: var(--scrollbar-width, 0);
  }

  .nav__item:hover .nav__dropdown,
  .nav__item:focus-within .nav__dropdown {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
  }

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

/* Desktop styles - restore normal nav behavior */
@media (min-width: 1024px) {
  /* Ensure desktop nav behavior is preserved */
  .nav-toggle {
    display: none !important;
  }

  .nav-overlay {
    display: none !important;
  }

  .nav {
    position: static !important;
    transform: none !important;
    width: auto !important;
    height: auto !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    overflow: visible !important;
    padding: 0 !important;
  }

  ul.nav__list {
    display: flex !important;
    flex-direction: row !important;
    position: static !important;
    background: transparent !important;
    padding: 0 !important;
    margin: 0 !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
  }

  .nav__item {
    border: none !important;
    position: relative;
  }

  .nav__link {
    min-height: auto !important;
    padding: var(--space-2) var(--space-4) !important;
    background: transparent !important;
    transform: none !important;
    border: none !important;
  }

  .nav__submenu-toggle {
    display: none !important;
  }

  /* Restore desktop dropdown behavior */
  .nav__dropdown {
    position: absolute !important;
    top: calc(100% + var(--space-2)) !important;
    left: 0 !important;
    background: var(--panel) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow-lg) !important;
    padding: var(--space-2) !important;
    min-width: 240px !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-8px) !important;
    transition: all var(--transition-base) !important;
    z-index: var(--z-dropdown) !important;
    display: block !important;
    margin: 0 !important;
  }

  .nav__item:hover .nav__dropdown,
  .nav__item:focus-within .nav__dropdown {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
  }

  .nav__dropdown-item {
    border: none !important;
  }

  .nav__dropdown-link {
    display: block !important;
    padding: var(--space-3) var(--space-4) !important;
    color: var(--text-muted) !important;
    border-radius: var(--radius-sm) !important;
    transition: all var(--transition-fast) !important;
    font-size: var(--font-size-sm) !important;
    background: transparent !important;
    min-height: auto !important;
  }

  .nav__dropdown-link:hover,
  .nav__dropdown-link:focus-visible {
    background-color: var(--surface) !important;
    color: var(--text) !important;
    text-decoration: none !important;
    transform: translateX(4px) !important;
    padding-left: var(--space-4) !important;
  }

  .hero__title {
    font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-6xl));
  }
  
  .section {
    padding: var(--space-24) 0;
  }
}

/* Large desktop optimizations */
@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-16);
  }
}

/* ==========================================================================
   Utility Classes - Modern Design System
   ========================================================================== */

/* Background utilities */
.bg-primary {
  background: linear-gradient(135deg, #0F2F57 0%, #1B4C9C 60%, #1E60B4 100%);
  color: var(--accent-contrast);
}
.bg-surface { background-color: var(--surface); }
.bg-panel { background-color: var(--panel); }

/* Border utilities */
.border { border: 1px solid var(--border); }
.border-t { border-top: 1px solid var(--border); }
.border-b { border-bottom: 1px solid var(--border); }
.border-subtle { border: 1px solid var(--border-subtle); }

/* Shadow utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Border radius utilities */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* Circular icon utility for numbered/stepped UIs */
.circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.circle--primary { background-color: var(--accent); color: var(--accent-contrast); }
.circle--surface { background-color: var(--surface); border: 1px solid var(--border); color: var(--accent); }

/* Display utilities */
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }

/* Flex utilities */
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }

/* Width utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }

/* Height utilities */
.h-full { height: 100%; }
.h-auto { height: auto; }
.h-300 { height: 300px; }

/* Responsive utilities */
.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;
}

/* Focus utilities */
.focus-ring:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* Hover utilities */
.hover-lift:hover {
  transform: translateY(-1px);
}

.hover-scale:hover {
  transform: scale(1.02);
}

/* Transition utilities */
.transition { transition: all var(--transition-fast); }
.transition-colors { transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast); }

/* ==========================================================================
   Component-Specific Styles
   ========================================================================== */

/* Badge component */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.badge--success {
  background: rgba(34, 197, 94, 0.1);
  color: var(--success);
  border-color: var(--success);
}

.badge--warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border-color: var(--warning);
}

.badge--error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border-color: var(--error);
}

/* List styles */
.list-none {
  list-style: none;
  padding: 0;
}

.list-check {
  list-style: none;
  padding: 0;
}

.list-check li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
}

.list-check li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
}

/* ==========================================================================
   Icon System - SVG Icons to Replace Emojis
   ========================================================================== */

.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  fill: currentColor;
  vertical-align: middle;
}

.icon--sm {
  width: 0.875rem;
  height: 0.875rem;
}

.icon--md {
  width: 1.25rem;
  height: 1.25rem;
}

.icon--lg {
  width: 1.5rem;
  height: 1.5rem;
}

.icon--xl {
  width: 2rem;
  height: 2rem;
}

.icon--2xl {
  width: 3rem;
  height: 3rem;
}

/* Simple utility for partner/certification logos */
.logo-img {
  height: 80px;
  width: auto;
  display: inline-block;
}

/* Icon container for feature sections */
.icon-feature {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 0 auto var(--space-4);
  color: var(--accent);
}

.icon-feature--accent {
  background: rgba(18, 176, 160, 0.1);
  border-color: var(--accent);
  color: var(--accent);
}

.icon-feature--success {
  background: rgba(34, 197, 94, 0.1);
  border-color: var(--success);
  color: var(--success);
}

.icon-feature--warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--warning);
  color: var(--warning);
}

/* Gap utilities */
.gap-sm { gap: var(--space-4); }
.gap-md { gap: var(--space-6); }
.gap-lg { gap: var(--space-8); }

/* Grid alignment utilities */
.justify-items-center { justify-items: center; }

/* Additional text color helper */
.text-gray { color: var(--text-muted); }

/* Opacity helpers */
.opacity-90 { opacity: 0.9; }

/* Badge variant for primary color tag chips */
.badge--primary {
  background: rgba(0, 119, 182, 0.1);
  color: var(--accent);
  border-color: var(--accent);
}

/* Menu hamburger icon (supports .menu-icon and .nav-toggle__icon) */
.menu-icon,
.nav-toggle__icon {
  width: 24px;
  height: 24px;
  position: relative;
  cursor: pointer;
}
.menu-icon span,
.nav-toggle__icon span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: all var(--transition-fast);
  transform-origin: center;
}
.menu-icon span:nth-child(1),
.nav-toggle__icon span:nth-child(1) {
  position: absolute;
  top: 6px;
}
.menu-icon span:nth-child(2),
.nav-toggle__icon span:nth-child(2) {
  position: absolute;
  top: 11px;
}
.menu-icon span:nth-child(3),
.nav-toggle__icon span:nth-child(3) {
  position: absolute;
  top: 16px;
}

/* Active state for hamburger */
.nav-toggle.active .menu-icon span:nth-child(1),
.nav-toggle.active .nav-toggle__icon span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active .menu-icon span:nth-child(3),
.nav-toggle.active .nav-toggle__icon span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}