/* ================================================
   PREMIUM SECTIONS — Skills, Experience, Repos, Certs
   Aligns with Awards glass + navy theme
   ================================================ */

/* ── Shared navy section shell ── */
.skills,
.experience,
.repos {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #02094b 0%, #0e1560 100%);
}

.skills::before,
.experience::before,
.repos::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.skills .heading,
.experience .heading,
.repos .heading {
  color: #fff;
  position: relative;
  z-index: 1;
}

.skills .heading span,
.experience .heading span,
.repos .heading span {
  color: #4dabff;
}

.section-subtitle {
  text-align: center;
  color: rgba(255, 255, 255, 0.55);
  font-size: 1.55rem;
  line-height: 1.6;
  margin: 1rem auto 3.5rem;
  max-width: 640px;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

.section-subtitle a {
  color: #4dabff;
  font-weight: 600;
}

.section-subtitle a:hover {
  color: #7cc4ff;
}

/* ── SKILLS (filter + single panel) ── */
#skills-grid {
  display: block;
  max-width: 900px;
  margin: 0 auto;
  padding: 0;
  position: relative;
  z-index: 1;
}

.skills-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin-top: 1rem;
  margin-bottom: 2.5rem;
}

.skills-filter-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.65);
  padding: 0.7rem 1.4rem;
  border-radius: 50px;
  font-size: 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
}

.skills-filter-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.skills-filter-btn.active {
  background: linear-gradient(135deg, #0066ff, #00b8ff);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.35);
}

.skills-panel {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2.5rem 2.8rem;
  backdrop-filter: blur(10px);
  animation: panelFade 0.35s ease;
}

@keyframes panelFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.skills-panel-head {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.skills-panel-icon {
  width: 4.2rem;
  height: 4.2rem;
  border-radius: 12px;
  background: linear-gradient(135deg, #0066ff, #00b8ff);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.skills-panel-icon i {
  font-size: 1.8rem;
  color: #fff;
}

.skills-panel-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  text-transform: capitalize;
}

.skills-panel-count {
  margin-left: auto;
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 600;
}

.skills-compact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 1.2rem;
}

.skill-compact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  padding: 1.2rem 0.6rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.25s ease;
  text-align: center;
}

.skill-compact-item:hover {
  background: rgba(0, 102, 255, 0.12);
  border-color: rgba(0, 102, 255, 0.35);
  transform: translateY(-3px);
}

.skill-compact-icon {
  width: 3.6rem;
  height: 3.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-compact-icon img {
  width: 2.8rem;
  height: 2.8rem;
  object-fit: contain;
}

.skill-compact-icon i {
  font-size: 2.2rem;
  color: #4dabff;
}

.skill-compact-name {
  font-size: 1.15rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.3;
}

.skill-learning-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #f68c09;
  margin-top: 0.2rem;
  box-shadow: 0 0 6px #f68c09;
}

/* ── EXPERIENCE (timeline + cards) ── */
.experience-tabs-wrapper,
#experience-container {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
}

.exp-timeline {
  position: relative;
  padding-left: 3rem;
}

.exp-timeline::before {
  content: '';
  position: absolute;
  left: 0.55rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, #0066ff, #00b8ff, rgba(0, 184, 255, 0.2));
  border-radius: 2px;
}

.exp-card {
  position: relative;
  margin-bottom: 2.5rem;
  padding: 2.4rem 2.6rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
}

.exp-card::before {
  content: '';
  position: absolute;
  left: -2.72rem;
  top: 2.4rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0066ff, #00b8ff);
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 0 12px rgba(0, 102, 255, 0.5);
}

.exp-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 102, 255, 0.35);
  transform: translateX(4px);
}

.exp-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.exp-card-header h3 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.exp-card-period {
  font-size: 1.25rem;
  font-weight: 700;
  color: #4dabff;
  white-space: nowrap;
}

.exp-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 1.5rem;
}

.exp-card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.exp-card-meta i {
  color: #0066ff;
}

.exp-role-block {
  margin-bottom: 1.8rem;
}

.exp-role-block:last-child {
  margin-bottom: 0;
}

.exp-role-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.exp-role-head h4 {
  font-size: 1.55rem;
  font-weight: 700;
  color: #7cc4ff;
}

.exp-role-period {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 600;
}

.exp-role-block + .exp-role-block {
  padding-top: 1.5rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
}

.exp-tasks {
  list-style: none;
  margin: 0;
  padding: 0;
}

.exp-tasks li {
  display: flex;
  gap: 1rem;
  font-size: 1.35rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 0.9rem;
}

.exp-tasks li i {
  color: #0066ff;
  margin-top: 0.35rem;
  flex-shrink: 0;
  font-size: 1rem;
}

.exp-card .tech-stack {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.exp-card .tech-tag {
  background: rgba(0, 102, 255, 0.12);
  color: #7cc4ff;
  border-color: rgba(0, 102, 255, 0.25);
  font-size: 1.05rem;
}

.exp-card .tech-tag:hover {
  background: #0066ff;
  color: #fff;
}

/* ── GITHUB REPOS ── */
.repos-layout {
  position: relative;
  z-index: 1;
}

.repo-featured {
  margin-bottom: 2.5rem;
}

.repo-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}

.repo-card:hover {
  border-color: rgba(0, 102, 255, 0.4);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.repo-card--featured {
  padding: 2.5rem 3rem;
  border-left: 4px solid #0066ff;
  background: rgba(255, 255, 255, 0.07);
}

.repo-featured-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #f68c09;
  margin-bottom: 1rem;
}

.repo-header > i {
  color: #4dabff;
}

.repo-name {
  color: #fff;
}

.repo-name:hover {
  color: #4dabff;
}

.repo-desc {
  color: rgba(255, 255, 255, 0.65);
}

.repo-footer {
  border-top-color: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.5);
}

.repo-visibility {
  border-color: rgba(87, 171, 90, 0.5);
  color: #57ab5a;
  background: rgba(87, 171, 90, 0.1);
}

.repo-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.2rem;
  padding: 0.7rem 1.4rem;
  border-radius: 50px;
  background: rgba(0, 102, 255, 0.15);
  border: 1px solid rgba(0, 102, 255, 0.35);
  color: #7cc4ff;
  font-size: 1.2rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

.repo-cta:hover {
  background: #0066ff;
  color: #fff;
}

.repos-grid {
  grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr));
}

/* ── CERTIFICATIONS (light glass band) ── */
.certifications {
  background: linear-gradient(180deg, #f0f4ff 0%, #e8eef8 100%);
  position: relative;
}

.certifications .heading {
  color: #02094b;
}

.cert-card {
  background: #fff;
  border-radius: 18px;
  border: 1px solid rgba(2, 9, 75, 0.08);
  box-shadow: 0 8px 30px rgba(2, 9, 75, 0.06);
  padding: 2.5rem 2.2rem;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #02094b, #0066ff);
}

.cert-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 45px rgba(2, 9, 75, 0.12);
  border-color: rgba(0, 102, 255, 0.2);
}

.cert-card .icon {
  font-size: 2.2rem;
  color: #0066ff;
  background: rgba(0, 102, 255, 0.08);
  width: 5.5rem;
  height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  margin-bottom: 1.5rem;
}

.cert-card:hover .icon {
  background: linear-gradient(135deg, #02094b, #0066ff);
  color: #fff;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .skills-filter {
    gap: 0.5rem;
  }

  .skills-filter-btn {
    font-size: 1.1rem;
    padding: 0.55rem 1rem;
  }

  .skills-panel {
    padding: 1.8rem 1.5rem;
  }

  .skills-compact-grid {
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 0.8rem;
  }

  .exp-timeline {
    padding-left: 2.2rem;
  }

  .exp-card {
    padding: 1.8rem 1.6rem;
  }

  .exp-card-header h3 {
    font-size: 1.65rem;
  }

  .repos-grid {
    grid-template-columns: 1fr;
  }
}

/* Dark mode — sections already dark; certs stay light for contrast */
body.dark-mode .certifications {
  background: linear-gradient(180deg, #0a0e1f 0%, #080912 100%) !important;
}

body.dark-mode .cert-card {
  background: rgba(255, 255, 255, 0.04) !important;
  border-color: rgba(255, 255, 255, 0.08) !important;
}

body.dark-mode .cert-card .content h3 {
  color: #fff !important;
}

body.dark-mode .cert-card .content .issuer {
  background: rgba(0, 102, 255, 0.15) !important;
}

body.dark-mode .cert-card .content .date {
  color: rgba(255, 255, 255, 0.55) !important;
}

body.dark-mode .cert-card .content .credential-id {
  background: rgba(255, 255, 255, 0.05) !important;
  border-color: rgba(255, 255, 255, 0.1) !important;
  color: rgba(255, 255, 255, 0.45) !important;
}