/* ============================================
   BLIKSEM BLOCKER - DESIGN SYSTEM
   ============================================ */

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

/* === CSS RESET === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* === ROOT VARIABLES === */
:root {
  /* Color Palette - Electric Blue & Purple Theme */
  --primary-blue: #0066FF;
  --primary-purple: #7C3AED;
  --accent-cyan: #06B6D4;
  --accent-pink: #EC4899;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0066FF 0%, #7C3AED 100%);
  --gradient-accent: linear-gradient(135deg, #06B6D4 0%, #EC4899 100%);
  --gradient-dark: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  --gradient-light: linear-gradient(135deg, #F8FAFC 0%, #E2E8F0 100%);
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;
  --black: #000000;
  
  /* Semantic Colors */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-Index */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-popover: 500;
  --z-tooltip: 600;
  
  /* Layout */
  --container-max: 1280px;
  --container-padding: var(--space-6);
}

/* === BASE STYLES === */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--gradient-light);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

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

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

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

/* === LAYOUT UTILITIES === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-20) 0;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

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

.justify-between {
  justify-content: space-between;
}

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

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

.gap-8 {
  gap: var(--space-8);
}

.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

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

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

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

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

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

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

/* === CARDS === */
.card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2xl);
}

.card-gradient {
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
}

.card-gradient h3,
.card-gradient h4,
.card-gradient p {
  color: var(--white);
}

/* === FORMS === */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--gray-700);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--gray-800);
  background: var(--white);
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

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

.form-error {
  color: var(--error);
  font-size: var(--text-sm);
  margin-top: var(--space-2);
}

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  font-weight: 500;
  color: var(--gray-700);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  transition: all var(--transition-base);
}

/* === HERO SECTION === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: var(--z-base);
  text-align: center;
  color: var(--white);
}

.hero h1 {
  color: var(--white);
  font-size: var(--text-6xl);
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.8s ease-out;
}

.hero p {
  color: var(--gray-300);
  font-size: var(--text-xl);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* === FEATURE GRID === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.feature-card {
  text-align: center;
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-4);
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-4xl);
  box-shadow: var(--shadow-lg);
}

/* === TESTIMONIALS === */
.testimonial-card {
  position: relative;
}

.testimonial-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  margin: 0 auto var(--space-4);
  border: 3px solid var(--primary-blue);
}

.testimonial-rating {
  color: var(--warning);
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.testimonial-text {
  font-style: italic;
  color: var(--gray-600);
  margin-bottom: var(--space-4);
}

.testimonial-author {
  font-weight: 600;
  color: var(--gray-800);
}

.testimonial-role {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

/* === FOOTER === */
.footer {
  background: var(--gradient-dark);
  color: var(--gray-300);
  padding: var(--space-16) 0 var(--space-8);
}

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

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-700);
  color: var(--gray-500);
}

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

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

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

.animate-fadeIn {
  animation: fadeIn 0.6s ease-out;
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease-out;
}

/* === UTILITY CLASSES === */
.text-center {
  text-align: center;
}

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

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.5rem;
    --text-6xl: 3rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-base);
    pointer-events: none;
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--space-12) 0;
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
  }
  
  .hero h1 {
    font-size: var(--text-4xl);
  }
  
  .hero p {
    font-size: var(--text-base);
  }
}