/* ==========================================================================
   ClearPath Design System v2.0 - Shared Components
   Header, Footer, Buttons, Cards, and other reusable elements
   ========================================================================== */

/* ==========================================================================
   BASE RESETS & GLOBALS
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */

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

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

.section-lg {
  padding: var(--space-5xl) 0;
}

/* ==========================================================================
   HEADER - Dark Glassmorphic
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: rgba(var(--bg-primary-rgb), 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-default);
  transition: background var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: rgba(var(--bg-primary-rgb), 0.95);
  border-bottom-color: var(--border-hover);
  box-shadow: 0 4px 20px rgba(var(--bg-primary-rgb), 0.5);
}

/* Non-homepage pages: always show header with opaque background.
   polish.css hides the header on body.homepage until scroll;
   this ensures all other pages get a visible, opaque header. */
body:not(.homepage) .site-header {
  background: rgba(var(--bg-primary-rgb), 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transform: none;
  opacity: 1;
}

.site-header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.site-header .nav-logo {
  height: 40px;
  width: auto;
  transition: transform var(--transition-fast);
}

.site-header .nav-logo:hover {
  transform: scale(1.02);
}

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

.site-header .nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header .nav-links a {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
  position: relative;
}

.site-header .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition-base);
}

.site-header .nav-links a:hover {
  color: var(--text-primary);
}

.site-header .nav-links a:hover::after {
  width: 100%;
}

/* Header CTA Button */
.site-header .nav-links a.nav-cta {
  font-family: var(--font-button) !important;
  font-size: 12px;
  text-transform: uppercase;
  background: var(--accent-green);
  color: var(--bg-primary);
  padding: 6px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-pop);
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

.site-header .nav-links a.nav-cta:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-pop-hover);
  color: var(--bg-primary);
}

.site-header .nav-links a.nav-cta::after {
  display: none;
}

/* ==========================================================================
   THEME TOGGLE BUTTON
   Sun/moon icon that switches between light and dark mode.
   ========================================================================== */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: rgba(var(--text-primary-rgb), 0.08);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--text-secondary);
  transition: color var(--transition-fast),
              background var(--transition-fast),
              border-color var(--transition-fast);
  z-index: calc(var(--z-header) + 1);
  flex-shrink: 0;
}

.theme-toggle:hover {
  color: var(--accent-cyan);
  background: rgba(var(--accent-cyan-rgb), 0.1);
  border-color: var(--accent-cyan);
}

/* Icon visibility:
   - Light mode (default): show moon icon, hide sun
   - Dark mode: show sun icon, hide moon */
.theme-icon-sun {
  display: none;
}

.theme-icon-moon {
  display: block;
}

html[data-theme="dark"] .theme-icon-sun {
  display: block;
}

html[data-theme="dark"] .theme-icon-moon {
  display: none;
}

/* OS dark preference fallback (no data-theme set) */
@media (prefers-color-scheme: dark) {
  html:not([data-theme]) .theme-icon-sun {
    display: block;
  }
  html:not([data-theme]) .theme-icon-moon {
    display: none;
  }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: calc(var(--z-header) + 1);
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--transition-base),
              opacity var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

/* Base Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-button);
  font-size: 14px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-md) var(--space-xl);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              background var(--transition-fast);
}

/* Primary Button - Green with Cyan Pop */
.btn-primary {
  background: var(--accent-green);
  color: var(--bg-primary);
  box-shadow: var(--shadow-pop);
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-pop-hover);
  color: var(--bg-primary);
}

.btn-primary:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0px 0px rgba(var(--accent-cyan-rgb), 0.6);
}

/* Secondary Button - Cyan with Pop */
.btn-secondary {
  background: var(--accent-cyan);
  color: var(--bg-primary);
  box-shadow: 4px 4px 0px 0px rgba(var(--accent-green-rgb), 0.8);
}

.btn-secondary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px 0px rgba(var(--accent-green-rgb), 0.9);
  color: var(--bg-primary);
}

/* Outline Button */
.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border: 2px solid var(--accent-cyan);
  box-shadow: none;
}

.btn-outline:hover {
  background: rgba(var(--accent-cyan-rgb), 0.1);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0px 0px rgba(var(--accent-cyan-rgb), 0.3);
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  box-shadow: none;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(var(--text-primary-rgb), 0.05);
}

/* Button Sizes */
.btn-sm {
  font-size: 12px;
  padding: var(--space-sm) var(--space-md);
}

.btn-lg {
  font-size: 16px;
  padding: var(--space-lg) var(--space-2xl);
}

/* ==========================================================================
   CARDS - Dark Surface with Cyan Glow
   ========================================================================== */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-xl);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-hover);
}

.card-header {
  margin-bottom: var(--space-lg);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-sm) 0;
}

.card-description {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
}

.card-body {
  color: var(--text-secondary);
}

.card-footer {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-default);
}

/* Card Variants */
.card-flat {
  box-shadow: none;
}

.card-flat:hover {
  box-shadow: var(--shadow-card);
}

.card-highlight {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 30px var(--glow-cyan-strong);
}

/* ==========================================================================
   BADGES & TAGS
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-button);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--accent-cyan);
  border: 1px solid var(--border-default);
}

.badge-cyan {
  background: rgba(var(--accent-cyan-rgb), 0.1);
  color: var(--accent-cyan);
  border-color: rgba(var(--accent-cyan-rgb), 0.3);
}

.badge-green {
  background: rgba(var(--accent-green-rgb), 0.1);
  color: var(--accent-green);
  border-color: rgba(var(--accent-green-rgb), 0.3);
}

.badge-solid {
  background: var(--accent-cyan);
  color: var(--bg-primary);
  border-color: var(--accent-cyan);
}

/* ==========================================================================
   FOOTER - Dark Surface
   ========================================================================== */

.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-default);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: var(--space-4xl);
}

.site-footer .footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  text-align: center;
}

.site-footer .footer-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}


.site-footer .footer-logo {
  height: 32px;
  width: auto;
  margin-bottom: var(--space-sm);
}

.site-footer .footer-tagline {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.site-footer .footer-title {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.site-footer .footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.site-footer .footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color var(--transition-fast);
}

.site-footer .footer-links a:hover {
  color: var(--accent-cyan);
}

/* Footer Bottom */
.site-footer .footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
  max-width: var(--max-width-container);
  margin: var(--space-2xl) auto 0;
  padding: var(--space-lg) var(--space-lg) 0;
  border-top: 1px solid var(--border-default);
}

.site-footer .footer-contact a {
  color: var(--accent-green);
  font-size: 14px;
}

.site-footer .footer-contact a:hover {
  color: var(--accent-green);
}

.site-footer .footer-legal {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
}

.site-footer .footer-legal a {
  color: var(--accent-green);
  font-size: 13px;
}

.site-footer .footer-legal a:hover {
  color: var(--accent-green);
}

.site-footer .footer-copyright {
  color: var(--text-tertiary);
  font-size: 13px;
}

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

.site-footer .footer-social a {
  color: var(--accent-green);
  transition: color var(--transition-fast);
}

.site-footer .footer-social a:hover {
  color: var(--accent-green);
}

.site-footer .footer-social svg {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   FORM ELEMENTS
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(var(--accent-cyan-rgb), 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

.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;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* ==========================================================================
   RESPONSIVE - MOBILE
   ========================================================================== */

@media (max-width: 1024px) {
  .site-footer .footer-content {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  /* Mobile Header */
  .mobile-menu-toggle {
    display: flex;
  }

  .site-header .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-surface);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl);
    gap: var(--space-lg);
    transition: right var(--transition-slow);
    border-left: 1px solid var(--border-default);
  }

  .site-header .nav-links.active {
    right: 0;
  }

  .site-header .nav-links li {
    width: 100%;
  }

  .site-header .nav-links a {
    display: block;
    padding: var(--space-sm) 0;
    font-size: 16px;
  }

  .site-header .nav-links a.nav-cta {
    width: 100%;
    text-align: center;
    margin-top: var(--space-md);
  }

  /* Mobile menu overlay */
  .site-header .nav-links::before {
    content: '';
    position: fixed;
    top: 0;
    left: -100vw;
    width: 100vw;
    height: 100vh;
    background: rgba(var(--bg-primary-rgb), 0.5);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
  }

  .site-header .nav-links.active::before {
    left: -100%;
    opacity: 1;
    pointer-events: auto;
  }

  /* Mobile Footer */
  .site-footer .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .site-footer .footer-bottom {
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
  }

  .site-footer .footer-legal {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
  }

  /* Section spacing */
  .section {
    padding: var(--space-2xl) 0;
  }

  .section-lg {
    padding: var(--space-3xl) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

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