/* ============================================
   FILE: timeline.css
   PURPOSE: Experience & Education timelines
   ============================================ */

/* ── Timeline Wrapper ── */
.timeline {
  position: relative;
  margin-top: 40px;
  padding-left: 52px;
}

/* Vertical Line */
.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--accent-primary) 10%,
    var(--accent-primary) 90%,
    transparent
  );
  box-shadow: 0 0 8px var(--accent-dim);
}

/* ── Timeline Item ── */
.timeline-item,
.education-item {
  position: relative;
  margin-bottom: 36px;
}

/* Dot on the line */
.timeline-item::before,
.education-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-main);
  border: 2px solid var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-dim), 0 0 20px var(--accent-dim);
  transition: var(--transition);
  z-index: 1;
}

.timeline-item:hover::before,
.education-item:hover::before {
  background: var(--accent-primary);
  box-shadow: var(--glow-intense);
}

/* ════════════════════════════════════════════
   EXPERIENCE CARD — Full Redesign
════════════════════════════════════════════ */
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  position: relative;
  overflow: hidden;
}

/* Top accent line */
.timeline-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.timeline-card:hover {
  transform: translateX(6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card), 0 0 20px var(--accent-dim);
}

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

/* ── Card Header ── */
.exp-card-header {
  padding: 18px 20px 14px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--border-color);
}

.exp-card-left {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

/* Icon box */
.exp-icon-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: var(--accent-primary);
  flex-shrink: 0;
  transition: var(--transition);
}

.timeline-card:hover .exp-icon-box {
  border-color: var(--accent-primary);
  background: var(--accent-dim);
  box-shadow: var(--glow);
}

.exp-title-group {
  flex: 1;
  min-width: 0;
}

.timeline-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--text-bright);
  line-height: 1.3;
}

.timeline-org {
  font-size: 0.84rem;
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  margin-top: 3px;
  display: flex;
  align-items: center;
  gap: 5px;
}

/* Type badge (Internship / Freelance / Part-time etc) */
.exp-type-badge {
  font-size: 0.62rem;
  font-family: var(--font-mono);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
  align-self: flex-start;
}

/* ── Card Body ── */
.exp-card-body {
  padding: 14px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.exp-meta-row {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.timeline-duration {
  font-size: 0.78rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 6px;
}

.exp-location {
  font-size: 0.78rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 6px;
}

.timeline-description {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  padding-top: 10px;
  border-top: 1px dashed var(--border-color);
}

/* Skill/tech tags */
.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.exp-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  letter-spacing: 0.04em;
  transition: var(--transition-fast);
}

.exp-tag:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

/* ── Empty State ── */
.timeline-empty {
  text-align: center;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  padding: 50px 20px;
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  letter-spacing: 0.06em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.timeline-empty i {
  font-size: 2.2rem;
  opacity: 0.25;
  color: var(--accent-primary);
}

.timeline-empty p {
  color: var(--text-faint);
  font-size: 0.85rem;
}

.timeline-empty-soon {
  font-size: 0.7rem;
  color: var(--accent-primary);
  opacity: 0.6;
  border: 1px solid var(--accent-primary);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

/* ════════════════════════════════════════════
   EDUCATION CARD
════════════════════════════════════════════ */
.education-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent-primary); 
  padding: 20px 22px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  position: relative;
  overflow: hidden;
}

/* Top accent line */
.education-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.education-card:hover {
  transform: translateX(6px);
  border-color: var(--border-hover);
  border-left-color: var(--accent-primary);
  box-shadow: var(--shadow-card), 0 0 15px var(--accent-dim);
}

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

/* Content */
.education-title {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
  color: var(--text-bright);
}

.education-meta {
  font-size: 0.87rem;
  color: var(--accent-secondary);
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.education-year-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  background: var(--bg-elevated);
  color: var(--text-bright);
  border: 1px solid var(--border-color);
  margin-bottom: 10px;
}

.education-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 10px;
  margin-left: 8px;
  border: 1px solid;
}

.badge-ongoing {
  background: var(--bg-elevated);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.badge-completed {
  background: var(--bg-elevated);
  color: var(--accent-secondary);
  border-color: var(--accent-secondary);
}

.education-score {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-primary);
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* SGPA Table */
.sgpa-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.sgpa-table th {
  color: var(--accent-primary);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.sgpa-table tr {
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.sgpa-table tr:last-child { border-bottom: none; }
.sgpa-table tr:hover      { background: var(--bg-elevated); }

.sgpa-table td            { padding: 7px 12px; }
.sgpa-table td:first-child { color: var(--text-muted); }
.sgpa-table td:last-child  { color: var(--accent-primary); text-align: right; }

.sgpa-final td {
  color: var(--accent-primary) !important;
  font-weight: 700;
  border-top: 1px solid var(--border-hover);
}

/* Education placeholder */
.education-placeholder {
  opacity: 0.4;
  border-style: dashed;
}

/* ════════════════════════════════════════════
   PG ENHANCEMENTS
════════════════════════════════════════════ */

/* Better spacing for 6-semester tables */
.sgpa-table tr td:last-child {
  font-weight: 600;
  letter-spacing: 0.03em;
}

/* Placeholder "—" values - faded look */
.sgpa-table td:last-child {
  transition: var(--transition-fast);
}

/* Highlight completed semesters/years */
.sgpa-table tr:has(td:last-child:not(:contains("—"))):hover {
  background: rgba(var(--accent-rgb), 0.06);
}

/* Final CGPA row - extra emphasis */
.sgpa-table tr.sgpa-final {
  background:  rgba(var(--accent-rgb), 0.08);
  border-top: 2px solid var(--accent-primary) !important;
}

.sgpa-table tr.sgpa-final td:last-child {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-shadow: 0 0 8px var(--accent-dim);
}

/* PG card subtle distinction (optional) */
.education-item:has(.sgpa-table tr:nth-child(5)) .education-card {
  /* This targets cards with 4+ rows (PG programs) */
  border-left: 3px solid var(--accent-primary);
}

/* Semester labels - better readability */
.sgpa-table td:first-child {
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* Ongoing badge glow animation */
.badge-ongoing {
  animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%, 100% { box-shadow: 0 0 4px var(--accent-dim); }
  50% { box-shadow: 0 0 12px var(--accent-primary); }
}

/* Mobile - Compact tables */
@media (max-width: 768px) {
  .sgpa-table {
    font-size: 0.75rem;
  }
  
  .sgpa-table th,
  .sgpa-table td {
    padding: 5px 8px;
  }
  
  .sgpa-table tr.sgpa-final td:last-child {
    font-size: 0.82rem;
  }
}

@media (max-width: 480px) {
  .sgpa-table th,
  .sgpa-table td {
    padding: 4px 6px;
  }
  
  .education-badge {
    font-size: 0.6rem;
    padding: 2px 8px;
  }
}