/* ── Background Canvas ── */
#bg-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f5f5f7;
  --bg-alt: #eeeef2;
  --bg-card: #ffffff;
  --accent: #5b52e8;
  --accent-light: #4740c9;
  --accent-glow: rgba(91, 82, 232, 0.1);
  --text: #1a1a2e;
  --text-muted: #555570;
  --text-faint: #9999b5;
  --border: rgba(0,0,0,0.08);
  --radius: 14px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ── Nav ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 2rem;
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(245, 245, 247, 0.9);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--accent-light);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.btn-nav {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 0.45rem 1.1rem;
  border-radius: 8px;
  font-size: 0.85rem !important;
  transition: opacity var(--transition) !important;
}
.btn-nav:hover { opacity: 0.85; }
/* ── Language Switcher ── */
.lang-switcher {
  position: relative;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  font-family: 'Inter', sans-serif;
}
.lang-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}
.lang-btn svg {
  transition: transform var(--transition);
}
.lang-btn[aria-expanded="true"] svg {
  transform: rotate(180deg);
}
.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
  overflow: hidden;
  min-width: 130px;
  z-index: 200;
}
.lang-dropdown.open {
  display: block;
  animation: dropIn 0.15s ease;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.lang-option {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  background: none;
  border: none;
  text-align: left;
  font-size: 0.85rem;
  font-family: 'Inter', sans-serif;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.lang-option:hover {
  background: rgba(91, 82, 232, 0.06);
  color: var(--text);
}
.lang-option.active {
  color: var(--accent);
  font-weight: 600;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero ── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 clamp(1.5rem, 8vw, 10rem);
  position: relative;
  overflow: hidden;
}
.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  width: 100%;
  max-width: 1100px;
}
#hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(108,99,255,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-photo {
  flex-shrink: 0;
}
.hero-avatar {
  width: 240px;
  height: 340px;
  border-radius: 24px;
  object-fit: contain;
  object-position: center center;
  background: var(--bg-alt);
  border: 4px solid var(--accent);
  box-shadow: 0 0 0 10px var(--accent-glow), 0 20px 60px rgba(91,82,232,0.15);
}
.hero-eyebrow {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 1rem;
}
.hero-name {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3rem, 7vw, 6.5rem);
  line-height: 1.05;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1.5rem;
}
.hero-name .accent { color: var(--accent-light); }
.hero-tagline {
  font-size: clamp(0.95rem, 1.5vw, 1.15rem);
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 2.5rem;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1.8rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity var(--transition), transform var(--transition);
}
.btn-primary:hover { opacity: 0.85; transform: translateY(-2px); }
.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.75rem 1.8rem;
  border-radius: 10px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-2px);
}
.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: clamp(1.5rem, 8vw, 10rem);
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-faint);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--text-faint);
}

/* ── Sections ── */
.section { padding: 7rem 0; }
.section-alt { background: var(--bg-alt); }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
}
.two-col {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  align-items: start;
}
.section-label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  position: sticky;
  top: 100px;
}
.label-number {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
}
.label-text {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.section-heading {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2.5rem;
  line-height: 1.2;
}

/* ── About ── */
.about-bio {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 3rem;
  max-width: 680px;
}
.about-stats {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 0.3rem; }
.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ── Timeline ── */
.timeline { display: flex; flex-direction: column; gap: 2rem; }
.timeline-item { display: flex; gap: 1.5rem; position: relative; }
.timeline-dot {
  width: 12px;
  height: 12px;
  min-width: 12px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 0.55rem;
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  flex: 1;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.timeline-card:hover {
  border-color: rgba(108, 99, 255, 0.3);
  box-shadow: 0 4px 30px rgba(108, 99, 255, 0.08);
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.job-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.2rem;
}
.job-company {
  font-size: 0.85rem;
  color: var(--accent-light);
  font-weight: 500;
}
.job-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  font-weight: 500;
  margin-top: 0.2rem;
  background: rgba(108,99,255,0.08);
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
}
.job-bullets {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
}
.job-bullets li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
  line-height: 1.6;
}
.job-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7rem;
  top: 0.28em;
}
.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}
.industry-tags span {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent-light);
  background: rgba(108,99,255,0.1);
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  border: 1px solid rgba(108,99,255,0.2);
}

/* ── Projects ── */
.projects-coming-soon-text {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
.project-card {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color var(--transition);
}
.project-card:hover { border-color: var(--accent); }
.project-placeholder-icon {
  color: var(--text-faint);
  margin-bottom: 0.5rem;
}
.project-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-faint);
}
.project-desc {
  font-size: 0.85rem;
  color: var(--text-faint);
  line-height: 1.6;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 0.75rem;
}
.project-tags span {
  font-size: 0.72rem;
  color: var(--text-faint);
  background: rgba(255,255,255,0.03);
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  border: 1px solid var(--border);
}

/* ── Function Chips ── */
.func-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.func-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(91, 82, 232, 0.07);
  border: 1.5px solid rgba(91, 82, 232, 0.2);
  border-radius: 20px;
  padding: 0.4rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  color: var(--accent);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.func-chip::before {
  content: '+';
  font-size: 0.9rem;
  font-weight: 700;
  transition: transform var(--transition);
}
.func-chip:hover {
  background: rgba(91, 82, 232, 0.14);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.func-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(91, 82, 232, 0.3);
}
.func-chip.active::before {
  content: '−';
}
.func-blurb {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  opacity: 0;
  position: relative;
}
.func-blurb.open {
  max-height: 200px;
  opacity: 1;
}
.func-blurb p {
  background: rgba(91, 82, 232, 0.05);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 0.9rem 2.5rem 0.9rem 1.1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 0.5rem;
}
.func-blurb-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  font-size: 0.75rem;
  color: var(--text-faint);
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
}
.func-blurb-close:hover {
  color: var(--text);
  background: rgba(0,0,0,0.05);
}

/* ── Education ── */
.edu-cards { display: flex; flex-direction: column; gap: 1.25rem; }
.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.edu-card:hover {
  border-color: rgba(108, 99, 255, 0.3);
  box-shadow: 0 4px 30px rgba(108, 99, 255, 0.08);
}
.edu-icon { font-size: 1.75rem; margin-top: 0.1rem; }
.edu-body { flex: 1; }
.edu-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}
.edu-header h3 { font-size: 1rem; font-weight: 600; }
.edu-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(108,99,255,0.08);
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  white-space: nowrap;
}
.edu-sub {
  font-size: 0.82rem;
  color: var(--accent-light);
  margin-bottom: 0.6rem;
  font-weight: 500;
}
.edu-detail {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}
.edu-activities {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border);
}
.edu-activities span {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
}
.edu-activities span::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.65rem;
  top: 0.3em;
}

/* ── Skills ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.skill-group-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.skill-group-title svg { color: var(--accent); }
.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.skill-pills span {
  font-size: 0.78rem;
  background: rgba(108,99,255,0.08);
  color: var(--text-muted);
  padding: 0.3rem 0.7rem;
  border-radius: 20px;
  border: 1px solid rgba(108,99,255,0.12);
  transition: background var(--transition), color var(--transition);
}
.skill-pills span:hover {
  background: rgba(108,99,255,0.18);
  color: var(--text);
}
.lang-pill {
  display: flex !important;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem !important;
}
.lang-pill em {
  font-style: normal;
  font-size: 0.7rem;
  color: var(--text-faint);
  margin-left: 0.2rem;
}

/* ── Contact ── */
.section-dark {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.contact-inner {
  text-align: center;
  padding-top: 5rem;
  padding-bottom: 5rem;
}
.contact-heading {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
}
.contact-sub {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 2.5rem;
}
.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}
.contact-item:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-2px);
}
.contact-item svg { color: var(--accent); }

/* ── Footer ── */
footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.78rem;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
}

/* ── Animations ── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .section-label {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    position: static;
  }
  .label-number { font-size: 1rem; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px;
    left: 0; right: 0;
    background: rgba(245,245,247,0.98);
    backdrop-filter: blur(16px);
    padding: 1.5rem 2rem 2rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--border);
  }
  .hamburger { display: flex; }
  .hero-scroll { display: none; }
  .hero-inner { flex-direction: column-reverse; gap: 2.5rem; }
  .hero-avatar { width: 200px; height: 200px; }
  .about-stats { gap: 1.75rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .card-header { flex-direction: column; }
}