/* ========================================
   TechSupport Solutions — Design System
   Premium Dark Theme with Glassmorphism
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---- CSS Variables ---- */
:root {
  /* Colors */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-tertiary: #06b6d4;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  
  --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
  --gradient-secondary: linear-gradient(135deg, #06b6d4, #6366f1);
  --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #1a1040 50%, #0a0e1a 100%);
  --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.05));
  
  --border-color: rgba(99, 102, 241, 0.15);
  --border-glass: rgba(255, 255, 255, 0.08);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

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

/* ---- Background Decoration ---- */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.04) 0%, transparent 50%);
  z-index: -1;
  animation: bgRotate 60s linear infinite;
}

@keyframes bgRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

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

/* ---- Navigation ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.95);
  box-shadow: var(--shadow-md);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-logo span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

.nav-admin-btn {
  background: var(--gradient-primary);
  color: white !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  font-size: 0.85rem !important;
}

.nav-admin-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

/* Mobile Menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--bg-glass-hover);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 6px 0;
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Main Content ---- */
main {
  padding-top: var(--nav-height);
  min-height: 100vh;
}

/* ---- Hero Section ---- */
.hero {
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  z-index: -1;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  animation: fadeInUp 0.8s ease;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-primary);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border-glass);
}

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

.hero-stat .stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.4);
  color: white;
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
}

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

.btn-outline {
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
}

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

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

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

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-icon {
  padding: 8px;
  width: 36px;
  height: 36px;
  justify-content: center;
}

/* ---- Sections ---- */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-glow);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---- Grid Layouts ---- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ---- Product Cards ---- */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(99, 102, 241, 0.3);
}

.product-card .product-image {
  height: 200px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--accent-primary);
  border-bottom: 1px solid var(--border-glass);
}

.product-card .product-info {
  padding: 24px;
}

.product-card .product-category {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-primary);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.product-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.product-card .product-price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-success);
}

.product-card .product-brand {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---- Article Cards ---- */
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(99, 102, 241, 0.3);
}

.article-card .article-image {
  height: 180px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--accent-secondary);
  border-bottom: 1px solid var(--border-glass);
}

.article-card .article-info {
  padding: 24px;
}

.article-card .article-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.article-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card .read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 0.9rem;
}

/* ---- Guide Cards ---- */
.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  cursor: pointer;
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(99, 102, 241, 0.3);
}

.guide-card .guide-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.guide-card .badge {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-category {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-primary);
}

.badge-difficulty {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-success);
}

.badge-difficulty.intermedio {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-warning);
}

.badge-difficulty.avanzado {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-danger);
}

.guide-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.guide-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

/* ---- FAQ Accordion ---- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-glow);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--bg-glass);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-content {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* ---- Contact Form ---- */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  padding: 40px 0;
}

.contact-info h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-detail-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-detail-item .detail-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-detail-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-detail-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0;
}

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

/* ---- Forms ---- */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
  background: rgba(255, 255, 255, 0.06);
}

.form-control::placeholder {
  color: var(--text-muted);
}

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

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2394a3b8'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 20px;
  padding-right: 40px;
}

/* ---- Page Headers ---- */
.page-header {
  padding: 60px 0 40px;
  text-align: center;
  position: relative;
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Filter Bar ---- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

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

/* ---- Detail Page ---- */
.detail-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.detail-container .back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-weight: 500;
}

.detail-container .back-link:hover {
  color: var(--accent-primary);
}

.detail-header {
  margin-bottom: 40px;
}

.detail-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.detail-meta {
  display: flex;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.detail-content {
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 1.05rem;
}

.detail-content h2 {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 32px 0 16px;
}

.detail-content h3 {
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 24px 0 12px;
}

.detail-content ul,
.detail-content ol {
  padding-left: 24px;
  margin: 12px 0;
}

.detail-content li {
  margin-bottom: 8px;
}

.detail-content strong {
  color: var(--text-primary);
}

.detail-content p {
  margin-bottom: 16px;
}

/* ---- Footer ---- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glass);
  padding: 60px 0 30px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-brand h3 span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-primary);
  transform: translateX(4px);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-glass);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---- Search Box ---- */
.search-box {
  max-width: 500px;
  margin: 0 auto 40px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.search-box .search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* ---- Toast Notifications ---- */
.toast-container {
  position: fixed;
  top: 90px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  padding: 16px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  min-width: 300px;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease;
  display: flex;
  align-items: center;
  gap: 12px;
}

.toast.success {
  border-left: 3px solid var(--accent-success);
}

.toast.error {
  border-left: 3px solid var(--accent-danger);
}

.toast.info {
  border-left: 3px solid var(--accent-primary);
}

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

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

/* ---- Loading ---- */
.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-glass);
  border-top: 3px solid var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 0;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

/* ---- Animations ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.5s ease;
}

.fade-in-up {
  animation: fadeInUp 0.6s ease;
}

/* Staggered animations */
.stagger > * {
  animation: fadeInUp 0.5s ease both;
}

.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.1s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.2s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }
.stagger > *:nth-child(6) { animation-delay: 0.3s; }
.stagger > *:nth-child(7) { animation-delay: 0.35s; }
.stagger > *:nth-child(8) { animation-delay: 0.4s; }

/* ---- Services Section ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---- Features Section ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.feature-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-glow);
}

.feature-card .feature-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 26, 0.98);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    transform: translateX(100%);
    transition: var(--transition);
    backdrop-filter: blur(20px);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links a {
    width: 100%;
    padding: 14px 20px;
    font-size: 1rem;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .hero { padding: 60px 0 50px; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: 30px; flex-wrap: wrap; }
  .hero-stat .stat-number { font-size: 1.8rem; }

  .section { padding: 50px 0; }

  .grid-2,
  .grid-3,
  .grid-4,
  .services-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .detail-container { padding: 24px 16px 60px; }
  .detail-header h1 { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; justify-content: center; }
  .contact-form-wrapper { padding: 24px; }
}

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }
.hidden { display: none !important; }