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

:root {
  --deep-blue: #003366;
  --electric-purple: #7B2D8E;
  --vibrant-orange: #FF6F00;
  --tech-white: #F5F5F5;
  --deep-space-gray: #1A1A2E;
  --data-green: #00C853;
  --alert-red: #D32F2F;
  --soft-purple: #E1BEE7;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-data: 'JetBrains Mono', 'Courier New', monospace;
  --max-width: 1200px;
  --transition: 0.3s ease-in-out;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--deep-space-gray);
  background: var(--tech-white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* Flex utilities */
.flex-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--vibrant-orange);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 1000;
  font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

/* Header */
.header {
  background: var(--deep-blue);
  color: #fff;
  padding: 0.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  font-style: italic;
  color: #fff;
  letter-spacing: 0.05em;
  transition: opacity var(--transition);
}
.logo:hover {
  opacity: 0.85;
}

/* Navigation */
.nav-list {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  border-radius: 4px;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  position: relative;
}
.nav-link:hover {
  background: rgba(123, 45, 142, 0.3);
  color: #fff;
}
.nav-link:focus-visible {
  outline: 2px solid var(--vibrant-orange);
  outline-offset: 2px;
}
.nav-link[aria-current="page"] {
  background: var(--electric-purple);
  color: #fff;
  box-shadow: inset 0 -3px 0 var(--vibrant-orange), 0 0 8px rgba(123, 45, 142, 0.5);
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 36px;
  height: 36px;
  position: relative;
  padding: 6px;
  border-radius: 4px;
  transition: background var(--transition);
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--vibrant-orange);
}
.hamburger-line {
  display: block;
  width: 24px;
  height: 3px;
  background: #fff;
  margin: 4px auto;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}
[data-open] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
[data-open] .hamburger-line:nth-child(2) {
  opacity: 0;
}
[data-open] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Footer */
.footer {
  background: var(--deep-space-gray);
  color: rgba(255,255,255,0.85);
  padding: 2.5rem 0 0;
  font-size: 0.95rem;
  border-top: 4px solid var(--electric-purple);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 2rem;
}

.footer-section {
  padding: 0.5rem 0;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  font-style: italic;
  color: #fff;
  margin-bottom: 0.75rem;
}

.footer-trust {
  line-height: 1.6;
  border-left: 3px solid var(--vibrant-orange);
  padding-left: 1rem;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--soft-purple);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-links a,
.footer-contact a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
  display: inline-block;
  padding: 0.2rem 0;
}
.footer-links a:hover,
.footer-contact a:hover {
  color: var(--vibrant-orange);
}
.footer-links a:focus-visible,
.footer-contact a:focus-visible {
  outline: 2px solid var(--vibrant-orange);
  outline-offset: 2px;
}

.footer-contact p {
  margin-bottom: 0.3rem;
}

.footer-note {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-top: 0.5rem;
  font-style: italic;
}

.footer-bottom {
  padding: 1rem 0;
  margin-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* Common Buttons */
.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--transition), transform 0.15s, box-shadow var(--transition);
  text-align: center;
}
.btn:focus-visible {
  outline: 2px solid var(--vibrant-orange);
  outline-offset: 2px;
}
.btn:hover {
  transform: scale(1.02);
}
.btn:active {
  transform: scale(0.97);
}
.btn-primary {
  background: var(--vibrant-orange);
  color: #fff;
}
.btn-primary:hover {
  background: #e65c00;
  box-shadow: 0 4px 12px rgba(255,111,0,0.4);
}
.btn-secondary {
  background: var(--electric-purple);
  color: #fff;
}
.btn-secondary:hover {
  background: #6a1f7a;
}

/* Scroll Progress Bar (placed at top of viewport via JS) */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--electric-purple), var(--vibrant-orange));
  z-index: 1001;
  width: 0;
  transition: width 0.1s linear;
  pointer-events: none;
}
@media (prefers-reduced-motion: reduce) {
  .scroll-progress {
    display: none;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    position: relative;
  }
  .nav-toggle {
    display: block;
  }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--deep-blue);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  }
  .nav[data-open] {
    max-height: 400px;
    padding: 0.5rem 0;
  }
  .nav-list {
    flex-direction: column;
    gap: 0;
  }
  .nav-link {
    display: block;
    padding: 0.8rem 1.5rem;
    border-radius: 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .nav-link[aria-current="page"] {
    background: var(--electric-purple);
    box-shadow: inset 3px 0 0 var(--vibrant-orange);
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .footer-section {
    padding: 0;
  }
  .footer-logo {
    font-size: 1.4rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .nav-link {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .footer-section:first-child {
    grid-column: 1 / -1;
  }
}

/* Focus visible for keyboard */
:focus-visible {
  outline: 2px solid var(--vibrant-orange);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* Placeholder for images (used by page-specific CSS) */
.image-placeholder {
  background: var(--soft-purple);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-data);
  color: var(--deep-space-gray);
  border: 2px dashed var(--electric-purple);
  border-radius: 8px;
  padding: 1rem;
}