/* ===================================
   MODERN SKILLS VISUALIZATION
   =================================== */

/* Skills Section Layout */
.skills {
  padding: var(--space-12) 0;
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
  position: relative;
  overflow: hidden;
}

.skills::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(0, 102, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 107, 53, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.skills .container {
  position: relative;
  z-index: 2;
}

/* Skills Header */
.skills .header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.skills .header h3 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  position: relative;
}

.skills .header h3::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-full);
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

/* Individual Skill Card */
.skill-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-base);
  border: 1px solid rgba(255, 255, 255, 0.8);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  transform: scaleX(0);
  transition: transform var(--transition-slow);
  transform-origin: left;
}

.skill-card:hover::before {
  transform: scaleX(1);
}

.skill-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 102, 255, 0.2);
}

.skill-card.animate-in {
  opacity: 1;
  transform: translateY(0);
  transition: all var(--transition-slower);
}

/* Skill Card Header */
.skill-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  position: relative;
}

.skill-header::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 30px;
  height: 2px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transition: transform var(--transition-slow);
  transform-origin: left;
}

.skill-card:hover .skill-header::after {
  transform: scaleX(1);
}

.skill-name {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.skill-percentage {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin: 0;
}

/* Progress Circle */
.skill-progress {
  position: relative;
  width: 120px;
  height: 120px;
  margin: var(--space-4) auto;
}

.progress-circle {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-circle-bg {
  fill: none;
  stroke: var(--color-gray-200);
  stroke-width: 8;
}

.progress-circle-fill {
  fill: none;
  stroke: url(#skillGradient);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 0 377; /* 2 * π * 60 = 377 */
  transition: stroke-dasharray 2s ease-out;
}

.skill-card:hover .progress-circle-fill {
  stroke-width: 10;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    filter: drop-shadow(0 0 5px rgba(0, 102, 255, 0.3));
  }
  50% {
    filter: drop-shadow(0 0 15px rgba(0, 102, 255, 0.6));
  }
}

/* Progress Bar Alternative */
.skill-progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--space-3) 0;
  position: relative;
}

.skill-progress-fill {
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 2s ease-out;
  position: relative;
}

.skill-progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 20px;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.4) 50%, transparent 100%);
  animation: shimmer 2s ease-out;
}

/* Skill Description */
.skill-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-top: var(--space-3);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

.skill-card:hover .skill-description {
  opacity: 1;
  transform: translateY(0);
}

/* Skill Tags */
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-4);
}

.skill-tag {
  padding: var(--space-1) var(--space-2);
  background: rgba(0, 102, 255, 0.1);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-base);
  border: 1px solid rgba(0, 102, 255, 0.2);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Hexagonal Skill Grid Alternative */
.skills-hexagon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.skill-hexagon {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 0 auto;
  cursor: pointer;
}

.hexagon-shape {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.skill-hexagon:hover .hexagon-shape {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-xl);
}

.hexagon-content {
  text-align: center;
  color: var(--color-white);
}

.hexagon-name {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.hexagon-percentage {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

/* Animated Counter */
.counter {
  display: inline-block;
}

/* Keyframe Animations */
@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes skillCardSlideIn {
  from {
    opacity: 0;
    transform: translateY(50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .skill-card {
    padding: var(--space-4);
  }
  
  .skill-progress {
    width: 100px;
    height: 100px;
  }
  
  .skills-hexagon-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }
  
  .skill-hexagon {
    width: 120px;
    height: 120px;
  }
  
  .hexagon-name {
    font-size: var(--font-size-sm);
  }
  
  .hexagon-percentage {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 480px) {
  .skills {
    padding: var(--space-8) 0;
  }
  
  .skills .header {
    margin-bottom: var(--space-8);
  }
  
  .skills-hexagon-grid {
    grid-template-columns: 1fr;
  }
  
  .skill-hexagon {
    width: 140px;
    height: 140px;
  }
}

/* SVG Gradient Definitions */
.skills-svg-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* Intersection Observer Animation Classes */
.skill-card.observe {
  opacity: 0;
  transform: translateY(30px);
}

.skill-card.observe.animate {
  opacity: 1;
  transform: translateY(0);
  transition: all 0.8s ease-out;
}

/* Staggered Animation Delays */
.skill-card:nth-child(1) { transition-delay: 0.1s; }
.skill-card:nth-child(2) { transition-delay: 0.2s; }
.skill-card:nth-child(3) { transition-delay: 0.3s; }
.skill-card:nth-child(4) { transition-delay: 0.4s; }
.skill-card:nth-child(5) { transition-delay: 0.5s; }
.skill-card:nth-child(6) { transition-delay: 0.6s; }
.skill-card:nth-child(7) { transition-delay: 0.7s; }
.skill-card:nth-child(8) { transition-delay: 0.8s; }
.skill-card:nth-child(9) { transition-delay: 0.9s; }