/*-----------------------------------*\
  #RESUME
  Education, experience, and skills
\*-----------------------------------*/

.article-title { margin-bottom: var(--space-xl); }

/*-----------------------------------*\
  #CV DOWNLOAD
\*-----------------------------------*/

.cv-download-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--accent-gradient);
  color: var(--bg);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-family: var(--ff-mono);
  font-size: var(--fs-8);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all var(--transition-1);
  float: right;
  margin-top: -55px;
  box-shadow:
    0 4px 16px var(--accent-glow),
    0 0 0 2px var(--accent-weak);
  position: relative;
  overflow: hidden;
}

.cv-download-btn::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: var(--transition-1);
}

.cv-download-btn:hover::before {
  left: 100%;
}

.cv-download-btn ion-icon {
  --ionicon-stroke-width: 50px;
  stroke-width: 2.4;
}

.cv-download-btn:hover {
  transform: translateY(-3px);
  box-shadow:
    0 6px 24px var(--accent-glow),
    0 0 0 3px var(--accent-weak),
    var(--glow-accent);
}

/*-----------------------------------*\
  #TIMELINE
  Orbital-inspired academic/career timeline
\*-----------------------------------*/

.timeline {
  margin-bottom: var(--space-xl);
  position: relative;
}

.timeline .title-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--border-subtle);
}

.timeline .title-wrapper .icon-box {
  width: 44px;
  height: 44px;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  color: var(--bg);
  box-shadow: 0 0 20px var(--accent-glow);
}

.timeline-list {
  font-size: var(--fs-6);
  margin-left: 56px;
  position: relative;
}

/* Central orbital line */
.timeline-list::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: -38px;
  width: 3px;
  background: linear-gradient(to bottom,
    var(--accent) 0%,
    var(--accent-secondary) 50%,
    var(--border) 100%);
  border-radius: var(--radius-full);
  box-shadow: 0 0 15px var(--accent-glow);
}

.timeline-item {
  position: relative;
  animation: slide-up 0.6s ease backwards;
  padding: var(--space-md) 0;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }

.timeline-item:not(:last-child) { margin-bottom: var(--space-xl); }

/* Orbital node - electron dot */
.timeline-item::after {
  content: '';
  position: absolute;
  top: 12px;
  left: -46px;
  height: 16px;
  width: 16px;
  background: var(--bg);
  border: 3px solid var(--accent);
  border-radius: 50%;
  box-shadow:
    0 0 0 5px var(--elevated),
    0 0 25px var(--accent-glow);
  transition: all var(--transition-1);
  z-index: 2;
}

/* Orbital ring animation */
.timeline-item::before {
  content: '';
  position: absolute;
  top: 8px;
  left: -52px;
  height: 24px;
  width: 24px;
  border: 2px solid var(--accent-weak);
  border-radius: 50%;
  border-top-color: var(--accent);
  border-right-color: var(--accent);
  opacity: 0;
  transition: opacity var(--transition-1);
  animation: orbital 8s linear infinite;
  transform-origin: center;
}

.timeline-item:hover::after {
  transform: scale(1.3);
  background: var(--accent-gradient);
  box-shadow:
    0 0 0 5px var(--elevated),
    0 0 40px var(--accent-glow),
    var(--glow-accent);
  border-color: var(--accent-hover);
}

.timeline-item:hover::before {
  opacity: 1;
}

.timeline-item-title {
  font-size: var(--fs-4);
  line-height: 1.5;
  margin-bottom: var(--space-xs);
  font-weight: var(--fw-600);
  color: var(--text);
  font-family: var(--ff-display);
  letter-spacing: -0.01em;
}

.timeline-list span {
  color: var(--accent);
  font-family: var(--ff-mono);
  font-size: var(--fs-8);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.6;
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-weak) 0%, transparent 100%);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  margin-bottom: var(--space-sm);
}

.timeline-text {
  color: var(--text-secondary);
  font-weight: var(--fw-300);
  line-height: 1.85;
  font-size: var(--fs-6);
}

/* Stagger animation for multiple items */
.timeline-item:nth-child(odd) {
  animation-name: slide-up-odd;
}

@keyframes slide-up-odd {
  from {
    opacity: 0;
    transform: translateY(25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/*-----------------------------------*\
  #SKILLS
  Molecular-inspired skill visualization
\*-----------------------------------*/

.skills-title {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--border-subtle);
  font-family: var(--ff-display);
  font-size: var(--fs-3);
  font-weight: var(--fw-600);
  color: var(--text);
  letter-spacing: -0.01em;
}

.skills-list {
  padding: var(--space-xl);
  background: linear-gradient(135deg, var(--surface) 0%, var(--elevated) 100%);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-2);
  position: relative;
  overflow: hidden;
}

.skills-list::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--accent-weak) 0%, transparent 70%);
  opacity: 0.4;
  filter: blur(60px);
}

.skills-item:not(:last-child) {
  margin-bottom: var(--space-xl);
}

.skill .title-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.skill .title-wrapper data {
  color: var(--accent);
  font-family: var(--ff-mono);
  font-size: var(--fs-7);
  font-weight: 600;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--accent-weak) 0%, transparent 100%);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  transition: var(--transition-1);
}

.skill .title-wrapper:hover data {
  background: var(--accent-weak);
  transform: translateX(4px);
}

.skill-progress-bg {
  background: var(--border-subtle);
  width: 100%;
  height: 10px;
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.skill-progress-fill {
  background: var(--accent-gradient);
  background-size: 200% 200%;
  height: 100%;
  border-radius: inherit;
  box-shadow:
    0 0 15px var(--accent-glow),
    0 0 30px rgba(3, 105, 161, 0.2);
  position: relative;
  overflow: hidden;
  animation: gradient-shift 3s ease infinite;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0;
}

/* Animated electron flow effect */
.skill-progress-fill::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.6) 50%,
    transparent 100%);
  background-size: 200% 100%;
  animation: electron-flow 2s ease-in-out infinite;
  opacity: 0.6;
}

.skill-progress-fill::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: var(--bg);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--accent-glow);
  animation: pulse-glow 2s ease-in-out infinite;
}

.skill-description {
  font-size: var(--fs-8);
  color: var(--muted);
  margin-top: var(--space-xs);
  font-style: italic;
  font-family: var(--ff-display-italic);
}

/* Molecular node decorations at progress points */
.skill-progress-bg::after {
  content: '';
  position: absolute;
  top: 50%;
  right: var(--space-sm);
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-glow);
  opacity: 0.5;
}

/* Hover effect */
.skill .title-wrapper:hover ~ .skill-progress-bg .skill-progress-fill {
  filter: brightness(1.1);
}

/* Languages */
.skills-title + .skills-list {
  margin-top: var(--space-xl);
}