/* ============================================
   NexCore Innovations - Main Stylesheet
   Complete Portfolio & Showcase Platform
   ============================================ */

/* CSS Variables - Theme System */
:root {
  /* Light Theme (Default) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-hover: #e2e8f0;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-dark: #94a3b8;
  
  --accent-primary: #2563eb;
  --accent-secondary: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --accent-glow: rgba(37, 99, 235, 0.3);
  
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  --shadow-sm: 0 1px 2px 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);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --radius-full: 9999px;
  
  --font-english: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-arabic: 'Tajawal', 'Cairo', 'IBM Plex Sans Arabic', sans-serif;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  --container-max: 1400px;
  --header-height: 80px;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0b0f19;
  --bg-secondary: #1e293b;
  --bg-tertiary: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;
  
  --border-light: #334155;
  --border-medium: #475569;
  --border-dark: #64748b;
  
  --accent-primary: #3b82f6;
  --accent-secondary: #22d3ee;
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #22d3ee 50%, #ec4899 100%);
  --accent-glow: rgba(59, 130, 246, 0.4);
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.25);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-english);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body[dir="rtl"] {
  font-family: var(--font-arabic);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-secondary);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 60px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 2px solid var(--border-light);
}

.btn-secondary:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  transition: all var(--transition-normal);
}

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

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(var(--bg-primary), 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.header.scrolled {
  background: var(--bg-secondary);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo svg {
  width: 40px;
  height: 40px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-primary);
  background: var(--bg-hover);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch,
.theme-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-switch:hover,
.theme-switch:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + 40px) 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-content {
  text-align: center;
  max-width: 900px;
  animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-badge svg {
  width: 18px;
  height: 18px;
  color: var(--accent-primary);
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  animation: fadeInUp 1s ease 0.4s both;
}

.hero-title .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 40px;
  animation: fadeInUp 1s ease 0.6s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.8s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
  animation: fadeInUp 1s ease 1s both;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-primary);
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Section Styles */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-size: 2rem;
  margin-bottom: 24px;
}

.service-title {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.service-description {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Portfolio Grid */
.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 30px;
}

.portfolio-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.portfolio-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.portfolio-image {
  position: relative;
  aspect-ratio: 16/10;
  background: var(--bg-tertiary);
  overflow: hidden;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-card:hover .portfolio-image img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  display: flex;
  align-items: flex-end;
  padding: 24px;
}

.portfolio-card:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-content {
  padding: 24px;
}

.portfolio-category {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.portfolio-title {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.portfolio-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  padding: 4px 12px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Large Diagrams Section */
.diagrams-section {
  background: var(--bg-tertiary);
}

.diagram-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 40px;
}

.diagram-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.diagram-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.diagram-title {
  font-size: 1.2rem;
  font-weight: 600;
}

.diagram-actions {
  display: flex;
  gap: 8px;
}

.diagram-body {
  padding: 0;
  background: var(--bg-primary);
  aspect-ratio: 16/10;
  overflow: auto;
}

.diagram-body svg {
  width: 100%;
  height: 100%;
  min-width: 600px;
  min-height: 375px;
}

.diagram-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.diagram-stats {
  display: flex;
  gap: 24px;
}

.diagram-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.diagram-stat svg {
  width: 18px;
  height: 18px;
  color: var(--accent-primary);
}

/* Gallery Section */
.gallery-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.gallery-tab {
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 10px;
}

.gallery-tab:hover,
.gallery-tab.active {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img,
.gallery-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img,
.gallery-item:hover video {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: var(--radius-full);
  color: var(--accent-primary);
}

.gallery-icon svg {
  width: 28px;
  height: 28px;
}

/* Code Section */
.code-section {
  background: var(--bg-tertiary);
}

.code-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 30px;
}

.code-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-header {
  padding: 16px 20px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.code-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  font-weight: 600;
}

.code-lang {
  padding: 4px 10px;
  background: var(--accent-primary);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.code-body {
  padding: 0;
  background: #1e1e1e;
  overflow: auto;
  max-height: 400px;
}

.code-body pre {
  margin: 0;
  padding: 20px;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  color: #d4d4d4;
  overflow-x: auto;
}

.code-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.code-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent-primary);
}

.code-link svg {
  width: 18px;
  height: 18px;
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* Automation Dashboard */
.automation-section {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.automation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.automation-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

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

.automation-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.automation-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  font-size: 1.5rem;
}

.automation-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.automation-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--success);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: var(--radius-full);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.automation-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.automation-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
}

.automation-row:last-child {
  border-bottom: none;
}

.automation-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.automation-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}

.testimonial-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

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

.testimonial-rating {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
}

.testimonial-rating svg {
  width: 20px;
  height: 20px;
  color: #fbbf24;
}

.testimonial-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
}

.author-avatar {
  width: 56px;
  height: 56px;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
}

.author-info {
  flex: 1;
}

.author-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.author-role {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-card {
  position: relative;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 20px;
  background: var(--accent-gradient);
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pricing-name {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-primary);
  margin-bottom: 8px;
}

.pricing-period {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.pricing-features {
  margin-bottom: 32px;
}

.pricing-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.pricing-feature:last-child {
  border-bottom: none;
}

.pricing-feature svg {
  width: 20px;
  height: 20px;
  color: var(--success);
  flex-shrink: 0;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: start;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  color: var(--accent-primary);
}

.faq-icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-normal);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

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

.faq-item.open .faq-answer {
  max-height: 200px;
}

.faq-answer-content {
  padding: 0 24px 24px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.contact-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-primary);
}

.contact-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 18px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand {
  max-width: 350px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--accent-primary);
  color: white;
}

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

.footer-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-copyright {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
  padding: 24px;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-link {
  display: block;
  padding: 16px 0;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.lightbox-close:hover {
  background: var(--accent-primary);
  color: white;
}

/* Loading Animation */
.loader {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--border-light);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  padding: 16px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.success {
  border-left: 4px solid var(--success);
}

.toast.error {
  border-left: 4px solid var(--error);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

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

  .nav-menu {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-stats {
    gap: 30px;
  }

  .stat-value {
    font-size: 2rem;
  }

  .services-grid,
  .portfolio-grid,
  .diagram-showcase {
    grid-template-columns: 1fr;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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

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

/* Print Styles */
@media print {
  .header,
  .footer,
  .btn,
  .mobile-menu {
    display: none;
  }

  .section {
    padding: 40px 0;
  }
}