/* CloudZone - Professional Cloud Email Infrastructure */
/* Color Palette: Deep Slate | Cyan Accent | Indigo Secondary | Sky Highlights */

:root {
  /* Primary palette */
  --color-slate-950: #0c1222;
  --color-slate-900: #0f172a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748b;
  --color-slate-400: #94a3b8;
  --color-slate-300: #cbd5e1;
  
  /* Accent - Cyan (Cloud/Tech) */
  --color-cyan-600: #0891b2;
  --color-cyan-500: #06b6d4;
  --color-cyan-400: #22d3ee;
  --color-cyan-300: #67e8f9;
  --color-cyan-200: #a5f3fc;
  --color-cyan-100: #cffafe;
  --color-cyan-50: #ecfeff;
  
  /* Secondary - Indigo */
  --color-indigo-600: #4f46e5;
  --color-indigo-500: #6366f1;
  --color-indigo-400: #818cf8;
  --color-indigo-100: #e0e7ff;
  
  /* Sky - Highlights */
  --color-sky-500: #0ea5e9;
  --color-sky-400: #38bdf8;
  
  /* Neutral */
  --color-white: #ffffff;
  --color-slate-50: #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-200: #e2e8f0;
  
  /* Semantic */
  --color-success: #10b981;
  --color-border: rgba(148, 163, 184, 0.2);
  
  /* Typography */
  --font-display: 'DM Sans', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --section-padding: 5rem 2rem;
  --container-max: 1200px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-slate-800);
  background: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

/* Links */
a {
  color: var(--color-cyan-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-cyan-500);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(12, 18, 34, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
}

.navbar.scrolled {
  background: rgba(12, 18, 34, 0.98);
}

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

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
}

.nav-brand .logo-cloud {
  color: var(--color-cyan-400);
}

.nav-brand .logo-zone {
  color: var(--color-indigo-400);
}

.nav-brand:hover .logo-cloud {
  color: var(--color-cyan-300);
}

.nav-brand:hover .logo-zone {
  color: var(--color-indigo-400);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-slate-200);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-cyan-300);
}

.nav-cta {
  background: linear-gradient(135deg, var(--color-cyan-500), var(--color-indigo-500));
  color: var(--color-white) !important;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* Mobile menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(165deg, var(--color-slate-950) 0%, var(--color-slate-900) 50%, #0a1628 100%);
  padding: 8rem 2rem 6rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(6, 182, 212, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(99, 102, 241, 0.08), transparent),
    radial-gradient(ellipse 50% 30% at 0% 80%, rgba(14, 165, 233, 0.06), transparent);
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--color-cyan-300), var(--color-sky-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtext {
  font-size: 1.25rem;
  color: var(--color-slate-300);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan-500), var(--color-indigo-500));
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(6, 182, 212, 0.45);
}

.btn-secondary {
  background: transparent;
  color: var(--color-cyan-300);
  border: 2px solid rgba(34, 211, 238, 0.5);
}

.btn-secondary:hover {
  background: rgba(34, 211, 238, 0.1);
  border-color: var(--color-cyan-400);
}

/* Section Styles */
section {
  padding: var(--section-padding);
}

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

.section-header h2 {
  color: var(--color-slate-900);
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--color-slate-600);
  font-size: 1.1rem;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Platform Advantage */
.platform-advantage {
  background: var(--color-slate-50);
}

.platform-advantage .section-header h2 {
  background: linear-gradient(135deg, var(--color-slate-900), var(--color-slate-700));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Core Strengths - Feature Blocks */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  border: 1px solid var(--color-slate-200);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(6, 182, 212, 0.12);
  border-color: var(--color-cyan-200);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-cyan-100), var(--color-indigo-100));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  color: var(--color-slate-900);
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--color-slate-600);
  font-size: 0.95rem;
}

/* Performance Section - Dark Block */
.performance-section {
  background: linear-gradient(165deg, var(--color-slate-900), var(--color-slate-800));
  color: var(--color-white);
}

.performance-section h2 {
  color: var(--color-white);
}

.performance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

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

.performance-item h4 {
  color: var(--color-cyan-300);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.performance-item p {
  color: var(--color-slate-400);
  font-size: 0.95rem;
}

/* Final Conversion */
.conversion-section {
  background: linear-gradient(135deg, var(--color-cyan-50), var(--color-slate-50));
  text-align: center;
  padding: 5rem 2rem;
}

.conversion-section .section-header {
  margin-bottom: 0;
}

.conversion-section h2 {
  color: var(--color-slate-900);
  margin-bottom: 1.5rem;
}

.footer p {
  color: var(--color-slate-300);
}

/* Page Headers */
.page-hero {
  padding: 8rem 2rem 4rem;
  background: linear-gradient(165deg, var(--color-slate-950), var(--color-slate-900));
  color: var(--color-white);
  text-align: center;
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.page-hero p {
  color: var(--color-slate-300);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Services Cards */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--color-white);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  border: 1px solid var(--color-slate-200);
  transition: all var(--transition-base);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(6, 182, 212, 0.15);
  border-color: var(--color-cyan-300);
}

.service-card h3 {
  color: var(--color-slate-900);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.service-card h3::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, var(--color-cyan-500), var(--color-indigo-500));
  border-radius: 2px;
}

.service-card p {
  color: var(--color-slate-600);
}

/* Service Workflow */
.workflow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin: 3rem 0;
  padding: 2rem;
  background: var(--color-slate-50);
  border-radius: 12px;
}

.workflow-step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-slate-700);
  font-weight: 500;
}

.workflow-step:not(:last-child)::after {
  content: '→';
  color: var(--color-cyan-500);
  font-weight: 700;
  margin-left: 0.5rem;
}

/* About */
.about-content {
  display: grid;
  gap: 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.about-block h3 {
  color: var(--color-slate-900);
  margin-bottom: 1rem;
}

.about-block p {
  color: var(--color-slate-600);
}

.principles-list {
  list-style: none;
}

.principles-list li {
  padding: 0.75rem 0;
  padding-left: 2rem;
  position: relative;
  color: var(--color-slate-700);
}

.principles-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-cyan-600);
  font-weight: 700;
}

/* Pricing */
.pricing-toggle {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.pricing-toggle button {
  padding: 0.6rem 1.5rem;
  border: 2px solid var(--color-slate-300);
  background: var(--color-white);
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pricing-toggle button.active {
  background: linear-gradient(135deg, var(--color-cyan-500), var(--color-indigo-500));
  color: var(--color-white);
  border-color: transparent;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto 3rem;
}

.pricing-card {
  background: var(--color-white);
  border-radius: 20px;
  padding: 2.5rem;
  border: 2px solid var(--color-slate-200);
  position: relative;
  transition: all var(--transition-base);
}

.pricing-card.featured {
  border-color: var(--color-cyan-500);
  box-shadow: 0 8px 40px rgba(6, 182, 212, 0.2);
}

.pricing-card.featured::before {
  content: 'Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-cyan-500), var(--color-indigo-500));
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.pricing-card h3 {
  color: var(--color-slate-900);
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-slate-900);
  margin-bottom: 0.5rem;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-slate-500);
}

.pricing-features {
  list-style: none;
  margin: 2rem 0;
}

.pricing-features li {
  padding: 0.6rem 0;
  color: var(--color-slate-600);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-cyan-600);
  font-weight: 700;
}

.pricing-card .btn {
  width: 100%;
  margin-top: 1rem;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto 3rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-slate-800);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 2px solid var(--color-slate-200);
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-cyan-500);
}

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

/* Request Account Multi-Step Form */
.request-form {
  max-width: 700px;
  margin: 0 auto;
  background: var(--color-white);
  padding: 3rem;
  border-radius: 20px;
  box-shadow: 0 8px 40px rgba(15, 23, 42, 0.1);
  border: 1px solid var(--color-slate-200);
}

.form-steps {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.form-step {
  flex: 1;
  height: 4px;
  background: var(--color-slate-200);
  border-radius: 2px;
  transition: background var(--transition-base);
}

.form-step.active,
.form-step.completed {
  background: linear-gradient(90deg, var(--color-cyan-500), var(--color-indigo-500));
}

.form-step-content {
  display: none;
}

.form-step-content.active {
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.checkbox-group input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--color-cyan-600);
}

.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.form-actions .btn {
  flex: 1;
}

/* Legal Pages */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.legal-content h1 {
  color: var(--color-slate-900);
  margin-bottom: 0.5rem;
}

.legal-content .updated {
  color: var(--color-slate-500);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.legal-content h2 {
  color: var(--color-slate-900);
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.legal-content h3 {
  color: var(--color-slate-800);
  font-size: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.legal-content p,
.legal-content li {
  color: var(--color-slate-600);
  margin-bottom: 1rem;
}

.legal-content ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

/* Footer */
.footer {
  background: var(--color-slate-950);
  color: var(--color-slate-300);
  padding: 4rem 2rem 2rem;
  margin-top: 0;
  position: relative;
}

.footer-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

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

.footer a {
  color: var(--color-slate-400);
  display: block;
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--color-cyan-300);
}

.footer-bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-slate-400);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-slate-900);
    padding: 2rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .section-padding {
    padding: 3rem 1.5rem;
  }
}

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

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