/* Smart Energy Path - Main Stylesheet */

/* ==========================================================================
   CSS Custom Properties (Design System)
   ========================================================================== */

:root {
  /* Brand Colors */
  --color-primary: #0B9E6D;
  --color-primary-600: #0A8660;
  --color-secondary: #0E3A5B;
  --color-accent: #F4A927;
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #0F172A;
  --color-muted: #64748B;
  --color-border: #E2E8F0;
  
  /* Gradients */
  --grad-hero: linear-gradient(135deg, #0B9E6D 0%, #0E3A5B 100%);
  
  /* Typography */
  --font-heading: "Poppins", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  
  /* Typography Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.8rem + 2.25vw, 3rem);
  --text-5xl: clamp(3rem, 2.2rem + 4vw, 4rem);
  
  /* Spacing Scale */
  --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: 1200px;
  --container-padding: 1.25rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1100;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --color-bg: #0F172A;
  --color-surface: #1E293B;
  --color-text: #F1F5F9;
  --color-muted: #94A3B8;
  --color-border: #334155;
}

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

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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Focus Management */
:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-4);
  background: var(--color-primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  font-weight: 500;
}

.skip-link:focus {
  top: var(--space-4);
}

/* Screen Reader Only */
.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;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-4);
  color: var(--color-text);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin: 0 0 var(--space-4);
}

.lead {
  font-size: var(--text-lg);
  color: var(--color-muted);
  font-weight: 400;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-600);
}

ul, ol {
  margin: 0 0 var(--space-4);
  padding-left: var(--space-6);
}

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

blockquote {
  margin: var(--space-8) 0;
  padding: var(--space-6);
  border-left: 4px solid var(--color-primary);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  font-style: italic;
}

blockquote p {
  margin-bottom: var(--space-4);
  font-size: var(--text-lg);
}

blockquote cite {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-muted);
  font-style: normal;
  font-weight: 500;
}

code {
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 0.875em;
  background: var(--color-border);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

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

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

.section--small {
  padding: var(--space-12) 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: var(--space-16);
}

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

.section__description {
  font-size: var(--text-lg);
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
}

.section__cta {
  text-align: center;
  margin-top: var(--space-12);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  background: var(--color-surface);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .header {
  background: var(--color-surface);
}

.header.scrolled {
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--text-lg);
  font-family: var(--font-heading);
}

.header__logo-icon {
  flex-shrink: 0;
}

.header__nav {
  display: none;
}

@media (min-width: 768px) {
  .header__nav {
    display: block;
  }
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-8);
}

.nav-link {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link[data-current] {
  color: var(--color-primary);
}

.nav-link[data-current]::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  border-radius: var(--radius-full);
  color: var(--color-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.theme-toggle__icon--dark {
  display: none;
}

[data-theme="dark"] .theme-toggle__icon--light {
  display: none;
}

[data-theme="dark"] .theme-toggle__icon--dark {
  display: block;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  gap: 4px;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.hamburger {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger:first-child {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger:last-child {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transform: translateY(-100%);
  transition: transform var(--transition-base);
  z-index: var(--z-fixed);
  max-height: calc(100vh - 80px);
  overflow-y: auto;
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-menu__content {
  padding: var(--space-6);
}

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav-item {
  border-bottom: 1px solid var(--color-border);
}

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

.mobile-nav-link {
  display: block;
  padding: var(--space-4) 0;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: var(--text-lg);
}

.mobile-nav-link:hover,
.mobile-nav-link[data-current] {
  color: var(--color-primary);
}

.mobile-menu__cta {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn--primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-600);
  border-color: var(--color-primary-600);
  color: white;
}

.btn--secondary {
  background: var(--color-secondary);
  color: white;
  border-color: var(--color-secondary);
}

.btn--secondary:hover {
  background: #0a2f4a;
  border-color: #0a2f4a;
  color: white;
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--outline:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

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

.btn__icon {
  flex-shrink: 0;
}

.btn__icon--loading {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  background: var(--grad-hero);
  color: white;
  padding: var(--space-24) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.1;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero__title {
  font-size: var(--text-5xl);
  font-weight: 800;
  margin-bottom: var(--space-6);
  color: white;
}

.hero__subtitle {
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
  opacity: 0.9;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.hero__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* ==========================================================================
   Trust Row / Badges
   ========================================================================== */

.trust-row {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
}

.trust-row__badges {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.badge {
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.badge:hover {
  opacity: 1;
}

/* ==========================================================================
   Cards & Components
   ========================================================================== */

.service-card,
.case-study-card,
.blog-card,
.help-link-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-card:hover,
.case-study-card:hover,
.blog-card:hover,
.help-link-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.service-card__icon,
.help-link-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: var(--space-4);
}

.service-card__title,
.help-link-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.service-card__description,
.help-link-card__description {
  color: var(--color-muted);
  flex-grow: 1;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

/* Case Studies */
.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.case-study-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.case-study-card__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: var(--space-3) 0;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

/* Blog Cards */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
}

.blog-card--featured {
  grid-column: 1 / -1;
}

@media (min-width: 768px) {
  .blog-card--featured {
    grid-template-columns: 1fr 1fr;
    display: grid;
    gap: var(--space-8);
    align-items: center;
  }
  
  .blog-card--featured .blog-card__image {
    height: 300px;
  }
}

.blog-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.blog-card__meta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.blog-card__category {
  font-weight: 500;
  color: var(--color-primary);
}

.blog-card__title {
  margin-bottom: var(--space-3);
}

.blog-card__excerpt {
  color: var(--color-muted);
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.blog-card__link {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
}

.blog-card__link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Process Steps
   ========================================================================== */

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
}

.process-step {
  text-align: center;
}

.process-step__number {
  width: 60px;
  height: 60px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  font-weight: 700;
  margin: 0 auto var(--space-4);
}

.process-step__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.process-step__description {
  color: var(--color-muted);
}

/* ==========================================================================
   Statistics
   ========================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
}

.stat {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.stat__icon {
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.stat__value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-2);
}

.stat__label {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Testimonials
   ========================================================================== */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.testimonial {
  background: var(--color-surface);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.testimonial__quote {
  font-size: var(--text-lg);
  font-style: italic;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.testimonial__quote::before {
  content: '"';
  font-size: var(--text-3xl);
  color: var(--color-primary);
  line-height: 1;
}

.testimonial__quote::after {
  content: '"';
  font-size: var(--text-3xl);
  color: var(--color-primary);
  line-height: 1;
}

.testimonial__cite {
  font-size: var(--text-sm);
  color: var(--color-muted);
  font-style: normal;
  font-weight: 500;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-6);
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.required {
  color: #ef4444;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: var(--font-body);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-input[aria-invalid="true"],
.form-select[aria-invalid="true"],
.form-textarea[aria-invalid="true"] {
  border-color: #ef4444;
}

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

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.form-checkbox__input {
  margin-top: 4px;
  flex-shrink: 0;
}

.form-checkbox__label {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.5;
}

.form-error {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: #ef4444;
  display: none;
}

.form-error.show {
  display: block;
}

.contact-form__fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.contact-form__actions {
  text-align: center;
}

.form-message {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-top: var(--space-6);
}

.form-message--success {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.form-message--error {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

/* Newsletter Form */
.newsletter-form {
  margin-top: var(--space-4);
}

.newsletter-form__group {
  display: flex;
  gap: var(--space-2);
}

.newsletter-form__input {
  flex: 1;
}

.newsletter-form__submit {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.newsletter-form__submit:hover {
  background: var(--color-primary-600);
}

.newsletter-form--inline .newsletter-form__group {
  max-width: 400px;
  margin: 0 auto;
}

.newsletter-form__submit--inline {
  padding: var(--space-3) var(--space-6);
}

/* ==========================================================================
   Page Headers
   ========================================================================== */

.page-header {
  padding: var(--space-20) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.page-header--simple {
  padding: var(--space-16) 0;
  text-align: center;
}

.page-header .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .page-header .container {
    grid-template-columns: 1fr 1fr;
  }
}

.page-header__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.page-header__description {
  font-size: var(--text-lg);
  color: var(--color-muted);
  margin-bottom: var(--space-2);
}

.page-header__meta {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.page-header__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-secondary);
  color: white;
  padding: var(--space-20) 0 var(--space-8);
}

.footer__main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__logo-text {
  font-weight: 600;
  font-size: var(--text-lg);
  font-family: var(--font-heading);
}

.footer__description {
  margin-bottom: var(--space-6);
  opacity: 0.8;
}

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

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: white;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.footer__social-link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.footer__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
  color: white;
}

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

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

.footer__link {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: white;
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__contact-link {
  color: white;
  text-decoration: none;
}

.footer__contact-link:hover {
  color: var(--color-accent);
}

.footer__address {
  font-style: normal;
  line-height: 1.5;
}

.footer__newsletter-title {
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright {
  opacity: 0.8;
}

.footer__legal {
  display: flex;
  gap: var(--space-6);
}

.footer__legal-link {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: var(--text-sm);
}

.footer__legal-link:hover {
  color: white;
}

/* ==========================================================================
   Contact Page Specific
   ========================================================================== */

.contact__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
}

@media (min-width: 768px) {
  .contact__content {
    grid-template-columns: 1fr 1.5fr;
  }
}

.contact-info__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.contact-info__description {
  color: var(--color-muted);
  margin-bottom: var(--space-8);
}

.contact-info__item {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.contact-info__icon {
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact-info__label {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact-info__value {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.contact-info__value:hover {
  text-decoration: underline;
}

.contact-info__note {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-top: var(--space-1);
}

.contact-info__cta {
  background: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-top: var(--space-8);
}

.contact-info__cta-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.contact-info__cta-description {
  color: var(--color-muted);
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */

.faq__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 768px) {
  .faq__content {
    grid-template-columns: 1fr 300px;
  }
}

.faq-accordion {
  space-y: var(--space-4);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-item + .faq-item {
  margin-top: var(--space-4);
}

.faq-item__button {
  width: 100%;
  padding: var(--space-6);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.faq-item__question {
  font-size: var(--text-lg);
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.faq-item__icon {
  flex-shrink: 0;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-item__button[aria-expanded="true"] .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item__button[aria-expanded="true"] + .faq-item__answer {
  max-height: 1000px;
}

.faq-item__content {
  padding: 0 var(--space-6) var(--space-6);
  color: var(--color-muted);
  line-height: 1.6;
}

.faq-contact {
  background: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.faq-contact__title {
  margin-bottom: var(--space-3);
}

.faq-contact__description {
  color: var(--color-muted);
  margin-bottom: var(--space-4);
}

.faq-contact__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ==========================================================================
   Back to Top Button
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
  background: var(--color-primary-600);
  transform: translateY(-2px);
}

/* ==========================================================================
   404 Error Page
   ========================================================================== */

.error-page {
  text-align: center;
  padding: var(--space-24) 0;
}

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

.error-page__visual {
  margin-bottom: var(--space-8);
}

.error-code {
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.error-icon {
  color: var(--color-muted);
  margin: 0 auto;
}

.error-page__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.error-page__description {
  font-size: var(--text-lg);
  color: var(--color-muted);
  margin-bottom: var(--space-8);
}

.error-search {
  margin-bottom: var(--space-8);
}

.error-search__group {
  display: flex;
  max-width: 400px;
  margin: 0 auto var(--space-2);
}

.error-search__input {
  flex: 1;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-right: none;
}

.error-search__button {
  background: var(--color-primary);
  color: white;
  border: 2px solid var(--color-primary);
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
}

.error-search__help {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin: 0;
}

.search-results {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-top: var(--space-4);
  padding: var(--space-4);
  display: none;
}

.search-results.show {
  display: block;
}

.error-page__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.helpful-links__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

/* ==========================================================================
   Article/Blog Post Specific
   ========================================================================== */

.article-header {
  padding: var(--space-16) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb__list {
  display: flex;
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  gap: var(--space-2);
  align-items: center;
}

.breadcrumb__item::after {
  content: '/';
  margin-left: var(--space-2);
  color: var(--color-muted);
}

.breadcrumb__item:last-child::after {
  display: none;
}

.breadcrumb__link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--text-sm);
}

.breadcrumb__current {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.article-header__meta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.article-header__category {
  color: var(--color-primary);
  font-weight: 500;
}

.article-header__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.article-header__excerpt {
  font-size: var(--text-lg);
  color: var(--color-muted);
  margin-bottom: var(--space-6);
}

.article-header__author {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.article-header__share {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.article-header__share-label {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.article-header__share-link {
  color: var(--color-muted);
  text-decoration: none;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.article-header__share-link:hover {
  color: var(--color-primary);
  background: var(--color-border);
}

.article-header__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

.article-content__wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 1024px) {
  .article-content__wrapper {
    grid-template-columns: 1fr 300px;
  }
}

.article-content__body {
  max-width: 65ch;
}

.article-quote {
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: var(--color-surface);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
}

.article-figure {
  margin: var(--space-8) 0;
}

.article-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
}

.article-figure figcaption {
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-align: center;
  font-style: italic;
}

/* Article Sidebar */
.article-sidebar {
  position: sticky;
  top: calc(73px + var(--space-6));
  height: fit-content;
}

.article-toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.article-toc__title {
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
}

.article-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.article-toc__link {
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-decoration: none;
  line-height: 1.4;
}

.article-toc__link:hover {
  color: var(--color-primary);
}

.related-articles,
.sidebar-cta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.related-article {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.related-article:last-child {
  margin-bottom: 0;
}

.related-article__link {
  display: flex;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.related-article__image {
  width: 60px;
  height: 40px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.related-article__title {
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-1);
  line-height: 1.3;
}

.related-article__date {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.sidebar-cta__title {
  margin-bottom: var(--space-3);
  font-size: var(--text-base);
}

.sidebar-cta__description {
  color: var(--color-muted);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
}

/* Article Navigation */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.article-nav__link {
  display: block;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-base);
}

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

.article-nav__link--prev {
  text-align: left;
}

.article-nav__link--next {
  text-align: right;
}

.article-nav__direction {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-2);
}

.article-nav__title {
  font-weight: 500;
  font-size: var(--text-base);
}

/* ==========================================================================
   Service Detail Pages
   ========================================================================== */

.service-detail__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .service-detail__content {
    grid-template-columns: 1fr 1fr;
  }
  
  .service-detail__content--reverse {
    direction: rtl;
  }
  
  .service-detail__content--reverse > * {
    direction: ltr;
  }
}

.service-detail__icon {
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

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

.service-detail__description {
  color: var(--color-muted);
  margin-bottom: var(--space-6);
}

.service-detail__subtitle {
  font-size: var(--text-lg);
  margin: var(--space-6) 0 var(--space-4);
  color: var(--color-text);
}

.service-detail__list {
  margin-bottom: var(--space-6);
}

.service-detail__list li {
  margin-bottom: var(--space-3);
}

.benefits-grid {
  display: grid;
  gap: var(--space-3);
}

.benefit {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-muted);
}

.benefit svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.service-detail__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* ==========================================================================
   Case Study Detail Pages
   ========================================================================== */

.case-study__header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.case-study__badge {
  display: inline-block;
  margin-bottom: var(--space-4);
}

.case-study__type {
  background: var(--color-primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
}

.case-study__title {
  margin-bottom: var(--space-6);
}

.case-study__metrics {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.metric {
  text-align: center;
}

.metric__value {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.metric__label {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.case-study__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 768px) {
  .case-study__content {
    grid-template-columns: 1fr 1fr;
  }
}

.case-study__image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.case-study__section {
  margin-bottom: var(--space-8);
}

.case-study__section-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin: var(--space-6) 0;
}

.solution {
  background: var(--color-surface);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.solution h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
  color: var(--color-primary);
}

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

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  margin: var(--space-6) 0;
}

.result {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--color-surface);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.result__icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.result__value {
  display: block;
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.result__description {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

/* ==========================================================================
   Legal Pages
   ========================================================================== */

.legal-content__wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 1024px) {
  .legal-content__wrapper {
    grid-template-columns: 1fr 300px;
  }
}

.legal-content__body {
  max-width: 65ch;
}

.contact-details {
  background: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

.legal-sidebar {
  position: sticky;
  top: calc(73px + var(--space-6));
  height: fit-content;
}

.legal-nav,
.legal-contact {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.legal-nav__title,
.legal-contact__title {
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
}

.legal-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.legal-nav__link {
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-decoration: none;
  line-height: 1.4;
}

.legal-nav__link:hover {
  color: var(--color-primary);
}

.legal-contact__description {
  color: var(--color-muted);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
}

.pricing-options {
  margin: var(--space-6) 0;
}

.pricing-option {
  background: var(--color-surface);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-4);
}

.pricing-option h4 {
  margin-bottom: var(--space-2);
  color: var(--color-primary);
}

.pricing-option p {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-sm);
}

/* ==========================================================================
   CTA Sections
   ========================================================================== */

.cta,
.final-cta,
.error-cta {
  text-align: center;
}

.cta__content,
.final-cta__content,
.error-cta__content {
  max-width: 600px;
  margin: 0 auto;
}

.cta__title,
.final-cta__title,
.error-cta__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.cta__description,
.final-cta__description,
.error-cta__description {
  font-size: var(--text-lg);
  color: var(--color-muted);
  margin-bottom: var(--space-8);
}

.cta__actions,
.final-cta__actions,
.error-cta__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.final-cta {
  background: var(--grad-hero);
  color: white;
}

.final-cta .final-cta__title,
.final-cta .final-cta__description {
  color: white;
}

.final-cta .final-cta__description {
  opacity: 0.9;
}

/* Newsletter Signup */
.newsletter-signup {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin: var(--space-12) 0;
  text-align: center;
}

.newsletter-signup__title {
  margin-bottom: var(--space-3);
}

.newsletter-signup__description {
  color: var(--color-muted);
  margin-bottom: var(--space-6);
}

/* ==========================================================================
   Utilities & Animations
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Loading states */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.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;
}

/* Print styles */
@media print {
  .header,
  .footer,
  .back-to-top,
  .mobile-menu-toggle,
  .theme-toggle {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
  }
  
  img {
    max-width: 100% !important;
  }
  
  a {
    text-decoration: underline;
  }
  
  a[href^="http"]:after {
    content: " (" attr(href) ")";
  }
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 767px) {
  .section {
    padding: var(--space-12) 0;
  }
  
  .section--small {
    padding: var(--space-8) 0;
  }
  
  .hero {
    padding: var(--space-16) 0;
  }
  
  .page-header {
    padding: var(--space-12) 0;
  }
  
  .services-grid,
  .case-studies-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }
  
  .process-steps,
  .stats-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .hero__actions,
  .cta__actions,
  .error-cta__actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .contact-form__fields {
    grid-template-columns: 1fr;
  }
  
  .footer__main {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .article-nav {
    grid-template-columns: 1fr;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
  }
  
  .btn--outline {
    border-width: 3px;
  }
  
  .form-input,
  .form-select,
  .form-textarea {
    border-width: 3px;
  }
}

/* Reduced transparency for older browsers */
@supports not (backdrop-filter: blur(10px)) {
  .header {
    background: var(--color-surface);
  }
}