/* ========================================
   CSS Variables
======================================== */
:root {
  /* Colors - Dark Theme */
  --color-bg: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-card: #1a1a25;
  --color-text: #f0f0f5;
  --color-text-secondary: #a0a0b0;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-dark: #4f46e5;
  --color-gradient-start: #6366f1;
  --color-gradient-end: #8b5cf6;
  --color-border: rgba(255, 255, 255, 0.1);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 5rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

/* ========================================
   Typography
======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

.text-accent {
  color: var(--color-accent);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   Layout
======================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-2xl) 0;
}

/* ========================================
   Components - Buttons
======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.5);
}

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

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

/* ========================================
   Components - Cards
======================================== */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

/* ========================================
   Hero Section
======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: var(--spacing-xl) var(--spacing-md);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse 80% 50% at center top, rgba(99, 102, 241, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
}

@media (min-width: 1200px) {
  .hero-content {
    max-width: 1100px;
  }
}

@media (min-width: 1600px) {
  .hero-content {
    max-width: 1300px;
  }
}

.hero-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  color: var(--color-accent-light);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.02em;
}

@media (min-width: 1200px) {
  .hero-badge {
    font-size: 1rem;
    padding: var(--spacing-sm) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
  }
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
}

@media (min-width: 1200px) {
  .hero h1 {
    font-size: 5rem;
    line-height: 1.1;
  }
}

@media (min-width: 1600px) {
  .hero h1 {
    font-size: 6rem;
  }
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

@media (min-width: 1200px) {
  .hero-subtitle {
    font-size: 1.5rem;
    max-width: 800px;
    margin-bottom: var(--spacing-2xl);
  }
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

@media (min-width: 1200px) {
  .hero-cta {
    gap: var(--spacing-md);
  }

  .hero-cta .btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
  }
}

/* ========================================
   About Section
======================================== */
.about {
  background: var(--color-bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 300px 1fr;
  }
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 350px 1fr;
  }
}

/* Photo styles */
.about-photo {
  display: flex;
  justify-content: center;
}

.photo-wrapper {
  position: relative;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--color-accent);
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
}

.photo-wrapper::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  z-index: -1;
}

.photo-wrapper:hover {
  transform: scale(1.05);
  box-shadow: 0 0 50px rgba(99, 102, 241, 0.4);
}

.photo-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

@media (min-width: 768px) {
  .photo-wrapper {
    width: 280px;
    height: 280px;
  }
}

@media (min-width: 1024px) {
  .photo-wrapper {
    width: 320px;
    height: 320px;
  }
}

.about-content h2 {
  margin-bottom: var(--spacing-md);
}

.about-content p {
  margin-bottom: var(--spacing-md);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
}

.tech-tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-accent-light);
}

.about-highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.highlight-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.highlight-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.highlight-text h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.highlight-text p {
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* ========================================
   Benefits Section
======================================== */
.benefits {
  background: var(--color-bg);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.benefit-card {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.benefit-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
  border-radius: var(--radius-lg);
}

.benefit-icon svg {
  width: 40px;
  height: 40px;
  color: var(--color-accent-light);
}

.benefit-card h3 {
  margin-bottom: var(--spacing-sm);
}

.benefit-card p {
  font-size: 0.9375rem;
  margin-bottom: 0;
}

/* ========================================
   Contact Section
======================================== */
.contact {
  background: var(--color-bg-secondary);
}

.contact-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-content h2 {
  margin-bottom: var(--spacing-sm);
}

.contact-content > p {
  margin-bottom: var(--spacing-xl);
}

.social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

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

.email-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-accent-light);
  font-size: 1.125rem;
}

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

/* ========================================
   Footer
======================================== */
.footer {
  background: var(--color-bg);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.footer-info {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.footer-info p {
  margin-bottom: var(--spacing-xs);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

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

.footer-copyright {
  color: var(--color-text-secondary);
  font-size: 0.75rem;
}

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

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

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

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Media Queries
======================================== */
@media (max-width: 768px) {
  section {
    padding: var(--spacing-xl) 0;
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-2xl) 0;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .social-links {
    gap: var(--spacing-sm);
  }

  .social-link span {
    display: none;
  }

  .social-link {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* ========================================
   Privacy Page Specific
======================================== */
.privacy-page {
  padding-top: var(--spacing-xl);
}

.privacy-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .privacy-content {
    max-width: 900px;
    padding: var(--spacing-2xl);
  }
}

@media (min-width: 1200px) {
  .privacy-content {
    max-width: 1000px;
  }
}

@media (min-width: 1600px) {
  .privacy-content {
    max-width: 1100px;
  }
}

.privacy-content h1 {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

@media (min-width: 1200px) {
  .privacy-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-2xl);
  }
}

.privacy-content h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

@media (min-width: 1200px) {
  .privacy-content h2 {
    font-size: 1.75rem;
  }
}

.privacy-content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

@media (min-width: 1200px) {
  .privacy-content p,
  .privacy-content li {
    font-size: 1.0625rem;
    line-height: 1.75;
  }
}

.privacy-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.privacy-content li {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
  position: relative;
}

.privacy-content li::before {
  content: '•';
  color: var(--color-accent);
  position: absolute;
  left: calc(-1 * var(--spacing-md));
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
}

.back-link:hover {
  color: var(--color-accent-light);
}