/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0e1a;
  --bg-card: #111827;
  --bg-card-hover: #1a2235;
  --accent: #3b82f6;
  --accent-2: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border: #1e293b;
  --border-light: #2d3f55;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: #60a5fa;
}

::selection {
  background: rgba(59, 130, 246, 0.3);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }

/* ===== NAV ===== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(30, 41, 59, 0.6);
  transition: box-shadow var(--transition);
}

nav.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition);
  letter-spacing: 0.02em;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  background: var(--accent-gradient);
  color: #fff !important;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-weight: 600 !important;
  transition: opacity var(--transition) !important;
}

.nav-cta:hover {
  opacity: 0.85;
  color: #fff !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== SECTIONS ===== */
section {
  padding: 6rem 0;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1rem;
}

.section-divider {
  width: 48px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 2px;
  margin-bottom: 3rem;
}

/* ===== HERO ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero-bg-circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
}

.hero-bg-circle-1 {
  width: 600px;
  height: 600px;
  background: #3b82f6;
  top: -200px;
  right: -200px;
}

.hero-bg-circle-2 {
  width: 400px;
  height: 400px;
  background: #8b5cf6;
  bottom: -100px;
  left: -100px;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  padding: 0.35rem 0.9rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #60a5fa;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

.hero-name {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #e2e8f0 30%, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-tagline strong {
  color: var(--text);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-light);
}

.btn-outline:hover {
  background: var(--bg-card);
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-1px);
}

.hero-contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--transition);
}

.contact-item:hover {
  color: var(--text);
}

.contact-item svg {
  flex-shrink: 0;
  opacity: 0.7;
}

/* ===== SKILLS ===== */
#skills {
  padding: 4rem 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
}

.skill-tag {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  text-align: center;
  transition: all var(--transition);
  font-family: var(--font-mono);
}

.skill-tag:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-2px);
}

/* ===== EXPERIENCE ===== */
.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2), transparent);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  padding-left: 52px;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-dot {
  position: absolute;
  left: 9px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.timeline-dot.current {
  background: linear-gradient(135deg, #22c55e, #10b981);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25), 0 0 12px rgba(34, 197, 94, 0.3);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}

.timeline-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  box-shadow: var(--shadow);
  transform: translateX(3px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.timeline-company {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.timeline-company a {
  color: var(--text);
  transition: color var(--transition);
}

.timeline-company a:hover {
  color: var(--accent);
}

.timeline-role {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
}

.timeline-date {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  white-space: nowrap;
  flex-shrink: 0;
}

.current-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.25);
  color: #22c55e;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.15rem 0.6rem;
  border-radius: 20px;
  margin-left: 0.5rem;
}

.timeline-location {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.timeline-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-style: italic;
}

.timeline-bullets {
  list-style: none;
  margin-top: 0.75rem;
}

.timeline-bullets li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 0.25rem 0;
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.6;
}

.timeline-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7rem;
  top: 0.35rem;
}

.timeline-bullets li strong {
  color: var(--text);
  font-weight: 600;
}

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.project-card.visible:hover {
  transform: translateY(-3px);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.project-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.project-links {
  display: flex;
  gap: 0.5rem;
}

.project-link {
  color: var(--text-dim);
  transition: color var(--transition);
  display: flex;
  align-items: center;
}

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

.project-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.project-role {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.project-date {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

/* ===== EDUCATION ===== */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}

.edu-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.edu-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.edu-school {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.edu-degree {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.edu-year {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.awards-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.award-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  transition: all var(--transition);
}

.award-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
}

.award-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.award-name {
  font-weight: 600;
  color: var(--text);
  font-size: 0.9rem;
}

.award-detail {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== COURSES ===== */
.courses-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.course-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.course-item:hover {
  background: var(--bg-card-hover);
  color: var(--text);
}

.course-item::before {
  content: '📚';
  flex-shrink: 0;
}

/* ===== TALKDOC SECTION ===== */
.talkdoc-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 720px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.talkdoc-intro strong {
  color: var(--text);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
}

.metric-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.metric-value {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 900;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.4;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.pillar-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.pillar-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.pillar-card.visible:hover {
  transform: translateY(-3px);
}

.pillar-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.pillar-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.pillar-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.pillar-desc strong {
  color: var(--text);
  font-weight: 600;
}

.talkdoc-cta-wrap {
  margin-top: 1rem;
}

.talkdoc-cta-card {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.08));
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.talkdoc-cta-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.talkdoc-cta-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 480px;
  line-height: 1.6;
}

.talkdoc-cta-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  flex-shrink: 0;
}

/* ===== CTA BANNER ===== */
.cta-banner-section {
  padding: 4rem 0;
}

.cta-banner {
  text-align: center;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06), rgba(139, 92, 246, 0.06));
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius);
  padding: 3rem 2rem;
}

.cta-banner-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.cta-banner-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.cta-banner-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== ANGEL INVESTING ===== */
.angel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  transition: all var(--transition);
}

.angel-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
}

.angel-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.angel-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.angel-sub {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

.angel-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.angel-highlight {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: #a78bfa;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  margin-top: 0.75rem;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-dim);
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--text);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition);
  border: none;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
  z-index: 99;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem 2rem 1.5rem;
    gap: 1rem;
  }

  .nav-links.open {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  section {
    padding: 4rem 0;
  }

  .timeline::before {
    display: none;
  }

  .timeline-item {
    padding-left: 0;
  }

  .timeline-dot {
    display: none;
  }

  .hero-contacts {
    gap: 0.75rem;
  }

  .talkdoc-cta-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .talkdoc-cta-actions {
    width: 100%;
  }

  .angel-card {
    flex-direction: column;
    gap: 1rem;
  }

  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
  }
}

@media (max-width: 480px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

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

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

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