/* Component Library - Modern Design System Components */

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family-text);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--animation-duration-normal) var(--animation-timing-ease);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--animation-duration-slow) var(--animation-timing-ease);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  color: var(--color-neutral-0);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--color-background-glass);
  backdrop-filter: var(--backdrop-blur-md);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-light);
}

.btn-secondary:hover {
  background: var(--color-background-secondary);
  transform: translateY(-1px);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-index-fixed);
  background: var(--color-background-glass);
  backdrop-filter: var(--backdrop-blur-lg);
  -webkit-backdrop-filter: var(--backdrop-blur-lg);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--animation-duration-normal) var(--animation-timing-ease);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-brand {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.brand-text {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-700));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  display: none;
  align-items: center;
  gap: var(--spacing-8);
}

@media (min-width: 768px) {
  .navbar-nav {
    display: flex;
  }
}

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--animation-duration-fast) var(--animation-timing-ease);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-500);
  transition: width var(--animation-duration-normal) var(--animation-timing-ease);
}

.nav-link:hover {
  color: var(--color-text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.navbar-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-2);
}

@media (min-width: 768px) {
  .navbar-toggle {
    display: none;
  }
}

/* Project Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: 6px 12px;
  font-size: 11px;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: var(--backdrop-blur-sm);
  transition: all var(--animation-duration-fast) var(--animation-timing-ease);
}

.badge-confidential {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  color: var(--color-neutral-0);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
  position: relative;
  overflow: hidden;
}

.badge-confidential::before {
  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 var(--animation-duration-slow) var(--animation-timing-ease);
}

.badge-confidential:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(220, 38, 38, 0.5);
}

.badge-confidential:hover::before {
  left: 100%;
}

.badge-classified {
  background: linear-gradient(135deg, #7c2d12, #92400e);
  color: var(--color-neutral-0);
  box-shadow: 0 4px 12px rgba(124, 45, 18, 0.4);
}

.badge-military {
  background: linear-gradient(135deg, #1e40af, #1e3a8a);
  color: var(--color-neutral-0);
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.4);
}

.badge-featured {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  color: var(--color-neutral-0);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.badge-development {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: var(--color-neutral-0);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--animation-duration-normal) var(--animation-timing-ease);
}

/* Card System */
.card {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-base);
  transition: all var(--animation-duration-normal) var(--animation-timing-ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.glass-card {
  background: var(--color-background-glass);
  backdrop-filter: var(--backdrop-blur-md);
  -webkit-backdrop-filter: var(--backdrop-blur-md);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Section Titles */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-12);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -var(--spacing-3);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  border-radius: var(--radius-full);
}

/* Grid Systems */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
}

@media (min-width: 640px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
}

@media (min-width: 640px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Skill Cards */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

@media (min-width: 640px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.skill-card {
  background: var(--color-background-glass);
  backdrop-filter: var(--backdrop-blur-sm);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-5);
  text-align: center;
  transition: all var(--animation-duration-normal) var(--animation-timing-ease);
}

.skill-card:hover {
  transform: translateY(-2px);
  background: var(--color-background-secondary);
}

.skill-card h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.skill-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* Contact Links */
.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  align-items: center;
}

@media (min-width: 640px) {
  .contact-links {
    flex-direction: row;
    justify-content: center;
  }
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-4) var(--spacing-6);
  background: var(--color-background-glass);
  backdrop-filter: var(--backdrop-blur-sm);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: all var(--animation-duration-normal) var(--animation-timing-ease);
}

.contact-link:hover {
  transform: translateY(-2px);
  background: var(--color-background-secondary);
  color: var(--color-primary-600);
}

.contact-icon {
  font-size: var(--font-size-lg);
}

/* Footer */
.footer {
  background: var(--color-background-secondary);
  border-top: 1px solid var(--color-border-light);
  padding: var(--spacing-8) 0;
  text-align: center;
}

.footer p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* Loading States */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-light);
  border-radius: 50%;
  border-top-color: var(--color-primary-500);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Focus States for Accessibility */
.btn:focus-visible,
.nav-link:focus-visible,
.contact-link:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}