/* CSS Variables for Dark Theme */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #7d8590;
  --text-accent: #58a6ff;
  --border: #30363d;
  --border-hover: #484f58;
  --shadow: rgba(0, 0, 0, 0.5);
  --gradient: linear-gradient(135deg, #58a6ff 0%, #a855f7 100%);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.nav-brand a {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-primary);
  text-decoration: none;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
  font-weight: 500;
}

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

.language-switcher {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.lang-current {
  color: var(--text-accent);
  font-weight: bold;
}

.lang-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.lang-link:hover {
  color: var(--text-accent);
  background-color: var(--bg-tertiary);
}

/* Main Content */
.main {
  flex: 1;
  padding: 2rem 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  margin-top: 2rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Links */
a {
  color: var(--text-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #79c0ff;
  text-decoration: underline;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-radius: 12px;
  margin-bottom: 3rem;
  box-shadow: 0 4px 6px var(--shadow);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Projects Gallery */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
  margin: 3rem 0;
  padding: 0;
  width: 100%;
  box-sizing: border-box;
  justify-items: stretch;
  align-items: start;
}

/* Force grid to use available width properly */
.projects-grid > * {
  width: 100%;
  max-width: none;
}

/* Ensure cards fill available space properly */
@media (min-width: 480px) and (max-width: 767px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
  }
}

@media (min-width: 1024px) and (max-width: 1199px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
  }
}

@media (min-width: 1200px) and (max-width: 1399px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
  }
}

@media (min-width: 1400px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 3rem;
  }
}

.project-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(10px);
  width: 100%;
  min-width: 0; /* Prevents overflow issues */
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.project-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 40px rgba(88, 166, 255, 0.15);
  border-color: var(--text-accent);
}

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

.project-card-header {
  padding: 2rem 2rem 1rem;
  position: relative;
}

.project-card-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 2rem;
  right: 2rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.project-card h3 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.project-card-body {
  padding: 1rem 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
  font-size: 1rem;
}

.project-card-footer {
  padding: 1rem 2rem 2rem;
  margin-top: auto;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-accent);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--text-accent);
  border-radius: 8px;
  background: transparent;
  position: relative;
  overflow: hidden;
  font-size: 0.95rem;
}

.project-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--text-accent);
  transition: left 0.3s ease;
  z-index: -1;
}

.project-link:hover {
  color: var(--bg-primary);
  transform: translateX(4px);
}

.project-link:hover::before {
  left: 0;
}

.project-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.project-link:hover svg {
  transform: translateX(4px);
}

/* Project tags (if needed) */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tag {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--border);
}

/* About Section */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.about-content p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

/* Footer */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Projects Page Styles */
.projects-hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  padding: 4rem 0;
  margin-bottom: 4rem;
  position: relative;
  overflow: hidden;
}

.projects-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient);
  opacity: 0.1;
  z-index: 1;
}

.projects-hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
  position: relative;
  z-index: 2;
}

.projects-hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.projects-hero-subtitle {
  font-size: 1.3rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Projects Stats */
.projects-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto 4rem;
  padding: 0 2rem;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px var(--shadow);
}

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

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-accent);
  margin-bottom: 0.5rem;
  line-height: 1;
}

.stat-label {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Projects Section */
.projects-section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  margin-bottom: 4rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* Enhanced Project Cards */
.project-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

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

.project-meta {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.project-type {
  background: var(--bg-tertiary);
  color: var(--text-accent);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
}

.project-features {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.project-features h4 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.project-features ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.project-features li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  padding-left: 1rem;
  position: relative;
}

.project-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--text-accent);
  font-weight: bold;
}

.project-card-footer {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.project-link.primary {
  background: var(--text-accent);
  color: var(--bg-primary);
  border: 2px solid var(--text-accent);
  flex: 1;
  justify-content: center;
}

.project-link.primary:hover {
  background: transparent;
  color: var(--text-accent);
}

.project-link.secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 2px solid var(--border);
  flex: 1;
  justify-content: center;
}

.project-link.secondary:hover {
  background: var(--text-secondary);
  color: var(--bg-primary);
  border-color: var(--text-secondary);
}

.project-link.secondary::before {
  background: var(--text-secondary);
}

/* CTA Section */
.projects-cta {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 4rem 2rem;
  margin: 4rem auto;
  max-width: 1200px;
  position: relative;
  overflow: hidden;
}

.projects-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient);
  opacity: 0.05;
  z-index: 1;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.cta-content > p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: 1.6;
}

.cta-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.cta-feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  text-align: left;
  padding: 1.5rem;
  background: var(--bg-tertiary);
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.cta-feature:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--shadow);
}

.cta-icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border-radius: 12px;
}

.cta-text h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.cta-text p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0;
}

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

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 1rem;
  border: 2px solid transparent;
}

.cta-button.primary {
  background: var(--text-accent);
  color: var(--bg-primary);
  border-color: var(--text-accent);
}

.cta-button.primary:hover {
  background: transparent;
  color: var(--text-accent);
  transform: translateY(-2px);
}

.cta-button.secondary {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}

.cta-button.secondary:hover {
  background: var(--text-secondary);
  color: var(--bg-primary);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

.cta-button svg {
  width: 20px;
  height: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  /* Projects Hero Mobile */
  .projects-hero {
    padding: 2rem 0;
    margin-bottom: 2rem;
  }

  .projects-hero h1 {
    font-size: 2.5rem;
  }

  .projects-hero-subtitle {
    font-size: 1.1rem;
  }

  .projects-hero-content {
    padding: 0 1rem;
  }

  /* Stats Mobile */
  .projects-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 0 1rem;
  }

  .stat-card {
    padding: 1.5rem;
  }

  .stat-number {
    font-size: 2.5rem;
  }

  /* Section Header Mobile */
  .section-header h2 {
    font-size: 2rem;
  }

  .section-header p {
    font-size: 1.1rem;
  }

  /* Projects Grid Mobile */
  .projects-section {
    padding: 0 1rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 0;
    margin: 2rem 0;
  }

  .project-card-header,
  .project-card-body,
  .project-card-footer {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .project-card-header {
    padding-top: 1.5rem;
    padding-bottom: 0.75rem;
  }

  .project-card-footer {
    padding-bottom: 1.5rem;
    flex-direction: column;
  }

  .project-link {
    flex: none;
  }

  /* CTA Mobile */
  .projects-cta {
    padding: 2rem 1rem;
    margin: 2rem 1rem;
  }

  .cta-content h2 {
    font-size: 2rem;
  }

  .cta-content > p {
    font-size: 1.1rem;
  }

  .cta-features {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cta-feature {
    padding: 1rem;
  }

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

  .cta-button {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .container {
    padding: 0 15px;
  }
}

/* Medium screens (tablets) */
@media (min-width: 769px) and (max-width: 1024px) {
  .projects-hero h1 {
    font-size: 3rem;
  }

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

  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
  }

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

/* Large screens */
@media (min-width: 1025px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
  }
}

/* Extra large screens */
@media (min-width: 1400px) {
  .projects-hero h1 {
    font-size: 4rem;
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
  }

  .section-header h2 {
    font-size: 3rem;
  }

  .cta-content h2 {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 2rem 0;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
  }

  .language-switcher {
    order: -1;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 0 3%;
    margin: 1.5rem 0;
  }

  .project-card h3 {
    font-size: 1.3rem;
  }

  .project-card-header,
  .project-card-body,
  .project-card-footer {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .project-card-header {
    padding-top: 1.25rem;
    padding-bottom: 0.5rem;
  }

  .project-card-footer {
    padding-bottom: 1.25rem;
  }

  .project-link {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}

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

.hero,
.project-card,
.about-content {
  animation: fadeIn 0.6s ease-out;
}

/* Focus States for Accessibility */
a:focus,
button:focus {
  outline: 2px solid var(--text-accent);
  outline-offset: 2px;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}