/* Base Styles */
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Inter", system-ui, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #1e293b;
}
::-webkit-scrollbar-thumb {
  background: #22c55e;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #16a34a;
}

/* Gradient Backgrounds */
.gradient-bg {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  position: relative;
  overflow: hidden;
}
.gradient-bg::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.1) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
  pointer-events: none;
}
@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

/* Card Hover Effects */
.card-hover {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
}
.card-hover:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 197, 94, 0.3);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(34, 197, 94, 0.1);
}

/* Section Padding */
.section-padding {
  padding: 4rem 1rem;
}
@media (min-width: 768px) {
  .section-padding {
    padding: 6rem 2rem;
  }
}
@media (min-width: 1024px) {
  .section-padding {
    padding: 8rem 3rem;
  }
}

/* Button Styles */
.btn-primary {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #000;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s ease;
}
.btn-primary:hover::after {
  left: 100%;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(34, 197, 94, 0.4);
}

.btn-outline {
  border: 2px solid #475569;
  transition: all 0.3s ease;
}
.btn-outline:hover {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.1);
  transform: translateY(-2px);
}

/* Navigation */
.nav-link {
  position: relative;
  padding-bottom: 2px;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #22c55e;
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}

/* Project Tags */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  transition: all 0.2s ease;
}
.tag:hover {
  transform: scale(1.05);
}

/* Video Modal */
#videoModal {
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
#videoModal.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
#videoModal:not(.hidden) {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Case Study Expand */
.case-study {
  transition: max-height 0.4s ease, opacity 0.3s ease;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
}
.case-study:not(.hidden) {
  max-height: 1000px;
  opacity: 1;
}

/* Skill Icons Animation */
.skill-icon {
  transition: transform 0.3s ease, color 0.3s ease;
}
.skill-icon:hover {
  transform: scale(1.1) rotate(5deg);
  color: #22c55e;
}

/* Loading Animation for Images */
.image-loading {
  background: linear-gradient(90deg, #1e293b 25%, #334155 50%, #1e293b 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}
@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Print Styles */
@media print {
  .no-print {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  a {
    color: #000;
    text-decoration: none;
  }
}