/* ============================================
   DATAMAKS - Professional Business Website
   Modern, Clean, Conversion-Focused Design
   ============================================ */

/* CSS Variables */
:root {
  /* Brand Colors */
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --primary-light: #3b82f6;
  --secondary: #0f172a;
  --accent: #06b6d4;

  /* 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;

  /* Feedback Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', var(--font-sans);

  /* Spacing */
  --section-padding: 6rem;
  --container-max: 1200px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Shadows */
  --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 -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--gray-700);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.75rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  margin-bottom: 1rem;
}

.lead {
  font-size: 1.25rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(30, 64, 175, 0.4);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 64, 175, 0.5);
}

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

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

.btn-large {
  padding: 1.125rem 2.25rem;
  font-size: 1.125rem;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: all var(--transition-base);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.logo img {
  height: 40px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition-fast);
  position: relative;
}

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

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

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

/* Language Switcher */
.lang-switcher {
  display: flex;
  gap: 0.5rem;
  padding: 0.25rem;
  background: var(--gray-100);
  border-radius: var(--radius-full);
}

.lang-btn {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: var(--gray-900);
}

.lang-btn.active {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Mobile Menu */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  transition: all var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  padding-top: 140px;
  padding-bottom: var(--section-padding);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  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='%231e40af' fill-opacity='0.03'%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-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero h1 span {
  color: var(--primary);
}

.hero .lead {
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

/* Stats Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

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

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: 0.5rem;
}

/* ============================================
   PROBLEMS SECTION
   ============================================ */
.problems {
  padding: var(--section-padding) 0;
  background: var(--gray-900);
  color: var(--white);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-header h2 {
  color: inherit;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--gray-400);
  font-size: 1.125rem;
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.problem-card {
  padding: 2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.problem-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.problem-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.problem-card h4 {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.problem-card p {
  color: var(--gray-400);
  margin-bottom: 0;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
  padding: var(--section-padding) 0;
  background: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.service-card {
  padding: 2.5rem 2rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.service-card:hover {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.service-icon {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  font-size: 2rem;
  color: var(--white);
}

.service-card h4 {
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--gray-600);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

.service-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

/* ============================================
   WHY US SECTION
   ============================================ */
.why-us {
  padding: var(--section-padding) 0;
  background: var(--gray-50);
}

.why-us-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.why-us-content h2 {
  margin-bottom: 1.5rem;
}

.why-us-content .lead {
  margin-bottom: 2rem;
}

.benefits-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.benefit-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.benefit-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--success);
  color: var(--white);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
}

.benefit-text {
  font-size: 1.0625rem;
  color: var(--gray-700);
}

.benefit-text strong {
  color: var(--gray-900);
}

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

.cta h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.cta p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto 2rem;
}

.cta .btn-primary {
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.cta .btn-primary:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
  padding: var(--section-padding) 0;
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info h2 {
  margin-bottom: 1rem;
}

.contact-info .lead {
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-method {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.contact-method-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  font-size: 1.25rem;
  color: var(--primary);
}

.contact-method-text {
  display: flex;
  flex-direction: column;
}

.contact-method-label {
  font-size: 0.875rem;
  color: var(--gray-500);
}

.contact-method-value {
  font-weight: 600;
  color: var(--gray-900);
}

.contact-method-value a {
  color: var(--primary);
  transition: color var(--transition-fast);
}

.contact-method-value a:hover {
  color: var(--primary-dark);
}

/* Contact Form */
.contact-form {
  background: var(--gray-50);
  padding: 2.5rem;
  border-radius: var(--radius-xl);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  background: var(--white);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1);
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--gray-800);
}

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--gray-400);
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-800);
  border-radius: var(--radius-md);
  color: var(--gray-400);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
}

.footer-column h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

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

.footer-bottom {
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

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

  .hero-image {
    display: none;
  }

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

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

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

@media (max-width: 768px) {
  :root {
    --section-padding: 4rem;
  }

  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

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

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

  .stats-bar {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    text-align: center;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

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

  .btn {
    width: 100%;
  }

  .contact-form {
    padding: 1.5rem;
  }
}

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

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

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 2rem; }