/* ============================================
   SECTIONS — Hero, About, Education, Skills,
   Experience, Projects, Research, Achievements,
   Contact
   ============================================ */

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 70px;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-illustration {
  flex-shrink: 1;
  width: 380px;
  max-width: 100%;
  opacity: 0;
  animation: heroIllustrationIn 1s ease 0.5s forwards;
}

.hero-illustration svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.05));
}

@keyframes heroIllustrationIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--pill-bg);
  color: var(--pill-text);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-status .status-dot {
  width: 8px;
  height: 8px;
  background: #22C55E;
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  overflow-wrap: break-word;
  word-break: break-word;
}

.hero h1 .name-highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.typewriter-wrapper {
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 16px;
  min-height: 2em;
}

.typewriter-text {
  color: var(--accent);
  border-right: 2px solid var(--accent);
  animation: blink-caret 0.8s step-end infinite;
}

@keyframes blink-caret {
  50% { border-color: transparent; }
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.hero-socials {
  display: flex;
  gap: 16px;
}

.hero-socials a {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all 0.2s ease;
}

.hero-socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

/* Shortcut hints at hero bottom */
.shortcut-hints {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  opacity: 0;
  animation: hintFadeIn 0.6s ease 3s forwards;
  z-index: 2;
}

@keyframes hintFadeIn {
  to { opacity: 1; }
}

.shortcut-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.shortcut-hint kbd {
  padding: 2px 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.7rem;
  font-family: 'Space Grotesk', sans-serif;
  color: var(--accent);
  font-weight: 600;
}

.shortcut-hint-divider {
  width: 1px;
  height: 14px;
  background: var(--border);
}

/* ---------- NOW STRIP ---------- */
.now-strip {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  overflow: hidden;
}

.now-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.now-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.now-label i {
  font-size: 0.65rem;
  animation: pulse-dot 2s ease infinite;
}

.now-marquee {
  overflow: hidden;
  flex: 1;
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}

.now-marquee-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  width: max-content;
  animation: marqueeScroll 20s linear infinite;
}

.now-marquee:hover .now-marquee-inner {
  animation-play-state: paused;
}

.now-item {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.now-item i {
  color: var(--accent);
  font-size: 0.75rem;
}

.now-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.now-divider {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 50px;
  align-items: start;
}

.about-avatar {
  width: 200px;
  height: 200px;
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 0 4px var(--bg-primary), 0 0 0 6px var(--accent);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.about-avatar:hover {
  transform: scale(1.05);
  box-shadow: 0 0 0 4px var(--bg-primary), 0 0 0 6px var(--accent), 0 10px 30px rgba(0,0,0,0.15);
}

.about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.8;
}

.about-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--pill-bg);
  color: var(--pill-text);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
}

/* About Stat Cards */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.stat-number {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ---------- EDUCATION ---------- */
.edu-cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.edu-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.edu-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.edu-card h3 { font-size: 1.2rem; font-weight: 700; }

.edu-date { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; white-space: nowrap; }

.edu-degree { font-size: 1rem; color: var(--text-secondary); margin-bottom: 8px; }

.edu-grade {
  display: inline-block;
  padding: 4px 12px;
  background: var(--pill-bg);
  color: var(--accent);
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.edu-coursework { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 8px; }
.edu-coursework strong { color: var(--text-secondary); }

.edu-achievement {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
}

/* ---------- SKILLS ---------- */
.skills-grid {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.skill-category h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-pill {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--pill-bg);
  color: var(--pill-text);
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  opacity: 0;
  transform: translateY(10px) scale(0.9);
}

.skill-pill.pop-in {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.skill-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(159,18,57,0.2);
}

/* Skill category color variants — muted, professional */
/* Light theme */
/* Skill pills inherit accent from active palette via CSS vars */
.skill-category .skill-pill { background: var(--pill-bg); color: var(--pill-text); }

/* ---------- EXPERIENCE (Timeline) ---------- */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--timeline-line);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -33px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: 3px solid var(--bg-primary);
  z-index: 2;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.timeline-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.timeline-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}

.timeline-card h3 { font-size: 1.15rem; font-weight: 700; }
.timeline-card h3 a { color: var(--text-primary); }
.timeline-card h3 a:hover { color: var(--accent); }

.timeline-role {
  display: inline-block;
  padding: 4px 14px;
  background: var(--accent-gradient);
  color: #FFF;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.timeline-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.timeline-card ul { margin-bottom: 16px; }

.timeline-card li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.timeline-card li::before {
  content: '\25B8';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* Promotion sub-section within a timeline card */
.timeline-promotion {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--border);
}

.timeline-promotion .timeline-role {
  background: linear-gradient(135deg, #22D3EE, #6366F1);
}

/* ---------- PROJECTS ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-left: 3px solid transparent;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-left-color: var(--accent);
}

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.project-card h3 { font-size: 1.1rem; font-weight: 700; }
.project-card h3 a { color: var(--text-primary); }
.project-card h3 a:hover { color: var(--accent); }

.project-year {
  padding: 2px 10px;
  background: var(--pill-bg);
  color: var(--pill-text);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
  /* Clamp to 3 lines on card, full text in modal */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-card .view-details {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
  cursor: pointer;
  transition: gap 0.2s ease;
}

.project-card:hover .view-details {
  gap: 8px;
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
}

.project-tech .tech-chip {
  font-size: 0.75rem;
  padding: 3px 10px;
}

.project-link {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: color 0.2s ease;
  flex-shrink: 0;
  margin-left: 12px;
}

.project-link:hover { color: var(--accent); }

/* ---------- RESEARCH ---------- */
.research-cards {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.research-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.research-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 4px 0 0 4px;
}

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

.research-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--pill-bg);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease;
}

.research-card:hover .research-card-icon {
  transform: scale(1.1) rotate(-5deg);
  background: var(--accent);
  color: #FFF;
}

.research-card-body {
  flex: 1;
  min-width: 0;
}

.research-type {
  display: inline-block;
  padding: 4px 14px;
  background: var(--pill-bg);
  color: var(--pill-text);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.research-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
}

.research-detail {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.research-detail-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

.research-detail-item i {
  font-size: 0.7rem;
}

.research-venue {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  font-style: italic;
}

.research-authors {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.research-authors .me {
  color: var(--accent);
  font-weight: 700;
}

.research-card ul { margin-bottom: 16px; }

.research-card li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.research-card li::before {
  content: '\25B8';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.btn-paper {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--accent-gradient);
  color: #FFF;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-paper:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(159,18,57,0.3);
  color: #FFF;
}

/* ---------- AFFILIATIONS & ACHIEVEMENTS ---------- */
.affil-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.affil-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
}

.affil-section h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.affil-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.affil-list li:last-child { border-bottom: none; }

.affil-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }

.affil-year {
  display: inline-block;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 70px;
}

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.contact-info h3 { font-size: 1.4rem; margin-bottom: 16px; }

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.contact-link:hover { color: var(--accent); }

.contact-link i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--pill-bg);
  color: var(--accent);
  border-radius: 10px;
  font-size: 1rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group { position: relative; }

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--input-bg);
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--text-primary);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  outline: none;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(159,18,57,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

.btn-submit {
  padding: 14px 32px;
  background: var(--accent-gradient);
  color: #FFF;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  font-family: 'Plus Jakarta Sans', sans-serif;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(159,18,57,0.3);
}

.form-success {
  display: none;
  padding: 16px;
  background: rgba(34,197,94,0.1);
  color: #16A34A;
  border-radius: 10px;
  font-weight: 600;
  text-align: center;
  animation: fadeInUp 0.4s ease;
}

.form-success.show { display: block; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}