:root {
  --primary-dark: #0a0a0a;
  --secondary-dark: #111111;
  --accent-orange: #ff6b35;
  --accent-blue: #4a9eff;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #6c6c6c;
  --border-color: #333333;
  --card-bg: #1a1a1a;
  --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  --gradient-secondary: linear-gradient(135deg, #4a9eff 0%, #0066cc 100%);
  --shadow-dark: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(255, 107, 53, 0.2);
}

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

body {
  font-family: "Inter", sans-serif;
  background-color: var(--primary-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* Navigation */
.navbar {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
  z-index: 1000;
}

.navbar-brand {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

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

.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--accent-orange) !important;
}

.nav-link::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 50%;
  background: var(--gradient-primary);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 80%;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--primary-dark);
  overflow: hidden;
}

.network-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("../assets/background.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.3;
  z-index: 0;
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -2px;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.4rem;
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 600px;
  margin: 0 auto;
}

.hero-cta {
  margin-top: 2rem;
}

.btn-primary-custom {
  background: var(--gradient-primary);
  border: none;
  padding: 12px 30px;
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-glow);
}

.btn-primary-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.btn-outline-custom {
  border: 2px solid var(--accent-orange);
  color: var(--accent-orange);
  padding: 10px 30px;
  font-weight: 600;
  border-radius: 50px;
  background: transparent;
  transition: all 0.3s ease;
}

.btn-outline-custom:hover {
  background: var(--accent-orange);
  color: white;
  transform: translateY(-2px);
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.scroll-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-orange);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay {
  animation: fadeIn 1s ease-out 0.3s both;
}

.animate-fade-in-delay-2 {
  animation: fadeIn 1s ease-out 0.6s both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Section Styles */
.section-padding {
  padding: 100px 0;
}

.bg-dark-secondary {
  background-color: var(--secondary-dark);
}

.section-header {
  margin-bottom: 4rem;
}

.section-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-divider {
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  margin: 0 auto 1rem;
  border-radius: 2px;
}

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

/* Feature Cards */
.feature-card {
  text-align: center;
  padding: 2rem;
  border-radius: 15px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  height: 100%;
}

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

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

/* Project Cards */
.project-card {
  background: var(--card-bg);
  border-radius: 15px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
}

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

.project-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.3s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  top: 15px;
  right: 15px;
}

.project-status {
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.status-completed {
  /* background: rgba(40, 167, 69, 0.2); */
  background: rgba(10, 10, 10, 0.816);
  color: #28a745;
  border: 1px solid #28a745;
}

.status-progress {
  /* background: rgba(255, 193, 7, 0.2); */
  background: rgba(10, 10, 10, 0.95);
  color: #ffc107;
  border: 1px solid #ffc107;
}

.project-content {
  padding: 2rem;
}

.project-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  text-align: justify;
}

.project-tech {
  margin-bottom: 1.5rem;
}


.tech-tag {
  display: inline-block;
  background: rgba(255, 107, 53, 0.1);
  color: var(--accent-orange);
  padding: 4px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  margin-right: 8px;
  margin-bottom: 8px;
  border: 1px solid rgba(255, 107, 53, 0.3);
}

.project-links {
  display: flex;
  gap: 10px;
}

/* Article Cards */
.article-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 2rem;
  transition: all 0.3s ease;
  height: 100%;
}

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

.article-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.article-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.article-title a:hover {
  color: var(--accent-orange);
}

.article-excerpt {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.article-author {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.article-link {
  color: var(--accent-orange);
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.article-link:hover {
  color: var(--text-primary);
  transform: scale(1.1);
}

/* Team Cards */
.team-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  height: 100%;
}

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

.team-image {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--accent-orange);
}

.team-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-name {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.team-role {
  color: var(--accent-orange);
  font-weight: 500;
  margin-bottom: 1rem;
}

.team-bio {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.team-social {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.social-link {
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

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

/* Footer */
.footer {
  background: var(--secondary-dark);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  margin-top: 5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-social {
  display: flex;
  align-items: center;
}

.footer-divider {
  border-color: var(--border-color);
  margin: 2rem 0 1rem;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* .big-banner{
  width: 700px;
} */

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

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

  .section-title {
    font-size: 2.2rem;
  }

  .section-padding {
    padding: 60px 0;
  }

  .project-content,
  .article-card,
  .team-card {
    padding: 1.5rem;
  }

  .hero-cta .btn {
    display: block;
    width: 100%;
    margin-bottom: 1rem;
  }

  .hero-cta .btn:last-child {
    margin-bottom: 0;
  }

  .big-banner img{
    width: 200px;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .navbar-brand {
    font-size: 1.5rem;
  }

  .big-banner img{
    width: 250px;
  }
}

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

.border-gradient {
  border: 2px solid;
  border-image: var(--gradient-primary) 1;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-orange);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #ff8c66;
}