/* ========================================
   key-hatch llc - Corporate Website Styles
   ======================================== */

/* CSS Custom Properties */
:root {
  /* Brand Colors */
  --color-primary: #1e40af;
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1e3a8a;
  --color-secondary: #059669;
  --color-secondary-light: #10b981;
  --color-secondary-dark: #047857;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Typography */
  --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Layout */
  --container-max: 1200px;
  --container-padding: 1.5rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  
  /* 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);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-white);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

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

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: baseline;
  font-weight: 700;
  font-size: var(--font-size-2xl);
}

.logo-text {
  color: var(--color-primary);
}

.logo-suffix {
  color: var(--color-secondary);
  font-size: var(--font-size-sm);
  margin-left: var(--space-1);
  font-weight: 500;
}

/* Navigation */
.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.main-nav a {
  color: var(--color-gray-700);
  font-weight: 500;
  padding: var(--space-2) 0;
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: width 0.3s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.nav-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white) !important;
  padding: var(--space-2) var(--space-4) !important;
  border-radius: var(--radius-md);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-gray-800);
  position: relative;
  transition: background-color 0.3s ease;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-gray-800);
  transition: transform 0.3s ease;
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  top: 8px;
}

/* Hero Section */
.hero {
  padding: calc(72px + var(--space-24)) 0 var(--space-24);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-secondary) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 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: 0.5;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  font-size: var(--font-size-5xl);
  color: var(--color-white);
  margin-bottom: var(--space-6);
  line-height: 1.2;
}

.hero .lead {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-8);
}

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

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

.hero .btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

/* Section Styles */
.section {
  padding: var(--space-24) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-16);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

.section-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
}

/* Stats Section */
.stats-section {
  background-color: var(--color-gray-50);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
}

.stat-card {
  background-color: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.stat-number {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  font-weight: 500;
}

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

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all 0.3s ease;
}

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

.service-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
}

.service-card h3 {
  margin-bottom: var(--space-3);
}

.service-card p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-4);
}

.service-link {
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.service-link::after {
  content: '→';
  transition: transform 0.2s ease;
}

.service-link:hover::after {
  transform: translateX(4px);
}

/* About Preview Section */
.about-preview {
  background-color: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-content h2 {
  margin-bottom: var(--space-6);
}

.about-content p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-6);
}

.about-image {
  background: linear-gradient(135deg, var(--color-gray-100), var(--color-gray-200));
  border-radius: var(--radius-xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: var(--font-size-2xl);
}

/* Blog Section */
.blog-section {
  background-color: var(--color-gray-50);
}

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

.blog-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

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

.blog-image {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: var(--font-size-3xl);
}

.blog-content {
  padding: var(--space-6);
}

.blog-meta {
  display: flex;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-3);
}

.blog-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}

.blog-card p {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

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

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-24) 0;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta-section .btn-secondary:hover {
  background-color: transparent;
  color: var(--color-white);
}

/* Footer */
.site-footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand .footer-logo {
  display: flex;
  align-items: baseline;
  font-weight: 700;
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
}

.footer-brand .logo-text {
  color: var(--color-white);
}

.footer-brand .logo-suffix {
  color: var(--color-secondary-light);
}

.footer-description {
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.footer-nav h3,
.footer-contact h3 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
}

.footer-nav ul {
  list-style: none;
}

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

.footer-nav a {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-contact address {
  font-style: normal;
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

.footer-contact a {
  color: var(--color-secondary-light);
}

.footer-contact a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--space-8);
  text-align: center;
}

.copyright {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: 0;
}

/* Page Header */
.page-header {
  padding: calc(72px + var(--space-16)) 0 var(--space-12);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-secondary) 100%);
  color: var(--color-white);
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.page-header p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  max-width: 700px;
  margin: 0 auto;
}

/* Content Sections */
.content-section {
  padding: var(--space-16) 0;
}

.content-section:nth-child(even) {
  background-color: var(--color-gray-50);
}

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

.content-grid.reverse {
  direction: rtl;
}

.content-grid.reverse > * {
  direction: ltr;
}

.content-visual {
  background: linear-gradient(135deg, var(--color-gray-100), var(--color-gray-200));
  border-radius: var(--radius-xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: var(--font-size-4xl);
}

.feature-list {
  list-style: none;
  margin-top: var(--space-6);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--color-gray-700);
}

.feature-list li::before {
  content: '✓';
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
}

/* Process Section */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.process-step {
  text-align: center;
  padding: var(--space-6);
  position: relative;
}

.process-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-300);
  font-size: var(--font-size-2xl);
}

.step-number {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-xl);
  margin: 0 auto var(--space-4);
}

.process-step h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

.process-step p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-bottom: 0;
}

/* Company Info */
.company-info {
  background-color: var(--color-white);
}

.info-table {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  padding: var(--space-4) var(--space-6);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

.info-table th {
  width: 30%;
  color: var(--color-gray-700);
  font-weight: 600;
  background-color: var(--color-gray-50);
}

.info-table td {
  color: var(--color-gray-800);
}

/* Contact Section */
.contact-section {
  background-color: var(--color-gray-50);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info h3 {
  margin-bottom: var(--space-4);
}

.contact-info p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-6);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
  color: var(--color-white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.contact-method h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
}

.contact-method p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-bottom: 0;
}

.contact-form-wrapper {
  background-color: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.contact-form h3 {
  margin-bottom: var(--space-6);
}

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

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--color-gray-700);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

/* Blog List Page */
.blog-list {
  display: grid;
  gap: var(--space-8);
}

.blog-list-item {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-8);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.blog-list-item:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.blog-list-image {
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: var(--font-size-4xl);
}

.blog-list-content {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Blog Post */
.blog-post {
  max-width: 800px;
  margin: 0 auto;
  padding: calc(72px + var(--space-12)) var(--space-6) var(--space-12);
  min-height: calc(100vh - 72px);
}

@media (max-width: 768px) {
  .blog-post {
    padding: calc(72px + var(--space-8)) var(--space-4) var(--space-8);
  }
}

.blog-post-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.blog-post-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.blog-post-meta {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

.blog-post-content {
  font-size: var(--font-size-lg);
  line-height: 1.8;
}

.blog-post-content h2 {
  font-size: var(--font-size-2xl);
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
}

.blog-post-content h3 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.blog-post-content p {
  margin-bottom: var(--space-6);
}

.blog-post-content ul,
.blog-post-content ol {
  margin-bottom: var(--space-6);
  padding-left: var(--space-6);
}

.blog-post-content li {
  margin-bottom: var(--space-2);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-step:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
  }
  
  .header-inner {
    height: 64px;
  }
  
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .main-nav .nav-list {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero {
    padding: calc(64px + var(--space-16)) 0 var(--space-16);
  }
  
  .hero h1 {
    font-size: var(--font-size-4xl);
  }
  
  .about-grid,
  .content-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .content-grid.reverse {
    direction: ltr;
  }
  
  .process-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .blog-list-item {
    grid-template-columns: 1fr;
  }
  
  .blog-list-image {
    aspect-ratio: 16/9;
  }
  
  .info-table th,
  .info-table td {
    display: block;
    width: 100%;
  }
  
  .info-table th {
    background-color: transparent;
    padding-bottom: 0;
    border-bottom: none;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mb-0 { margin-bottom: 0; }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

/* Author Bio */
.author-bio {
  margin-top: var(--space-16);
  padding: var(--space-8);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
}

.author-bio-inner {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.author-avatar {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-avatar-placeholder {
  font-size: var(--font-size-3xl);
}

.author-info {
  flex: 1;
}

.author-name {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}

.author-role {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-bottom: var(--space-3);
}

.author-description {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

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

.facebook-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: #1877F2;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.facebook-link:hover {
  color: #0d65d9;
}

.facebook-link svg {
  fill: #1877F2;
}

@media (max-width: 768px) {
  .author-bio-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .author-social {
    justify-content: center;
  }
}