/* ---------- Design tokens ---------- */
:root {
  --bg: #faf6ee;
  --bg-alt: #fffdf8;
  --text: #2b2820;
  --text-muted: #6b6355;
  --text-faint: #9a9282;
  --accent: #5f7a45;
  --accent-dark: #46592f;
  --accent-soft: #eef1e3;
  --border: #e7e0cf;
  --border-strong: #d8cfb8;

  --latte: #7a9b6e;
  --latte-dark: #4f6b45;
  --latte-soft: #eef3e8;
  --berry: #3f6b52;
  --berry-dark: #2c4c3a;
  --berry-soft: #e5efe9;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 20, 30, 0.04), 0 8px 24px -12px rgba(20, 20, 30, 0.08);
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --container-w: 860px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; text-decoration: none; }

ul { list-style: none; margin: 0; padding: 0; }

h1, h2, h3 { line-height: 1.2; margin: 0; }

/* ---------- Progress bar ---------- */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--latte), var(--berry));
  z-index: 1000;
  transition: width 0.1s ease-out;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 246, 238, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.site-header.scrolled { border-bottom-color: var(--border); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.logo .dot {
  color: var(--accent);
  display: inline-block;
  animation: dot-pulse 2.4s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(1.3); }
}
@media (prefers-reduced-motion: reduce) {
  .logo .dot { animation: none; }
}

.site-header .container {
  max-width: 1120px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
  transition: color 0.15s ease;
}
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px -4px rgba(70, 89, 47, 0.4);
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--text); transform: translateY(-1px); }

.btn-small {
  padding: 8px 18px;
  font-size: 0.85rem;
  background: var(--text);
  color: var(--bg-alt);
}
.btn-small:hover { background: var(--accent); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 76px 24px 56px;
}

.hero-top {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  gap: 16px;
}

.hero-text {
  flex: 1;
  min-width: 0;
}

.hero-cta {
  position: relative;
  z-index: 1;
  margin-top: 36px;
}

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

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
}
.blob-1 {
  width: 300px;
  height: 300px;
  background: var(--accent-soft);
  top: -120px;
  right: -60px;
  animation: blob-float 16s ease-in-out infinite;
}
.blob-2 {
  width: 220px;
  height: 220px;
  background: var(--latte-soft);
  bottom: -110px;
  right: 140px;
  animation: blob-float 20s ease-in-out infinite reverse;
}

@keyframes blob-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-24px, 18px) scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  .blob { animation: none; }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin: 0 0 16px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.iced-matcha {
  position: relative;
  left: -8px;
  width: 81px;
  height: 105px;
  color: var(--accent-dark);
  flex-shrink: 0;
}

.iced-matcha .liquid-line { color: var(--latte); }
.iced-matcha .liquid-fill { fill: var(--accent); opacity: 0.3; }
.iced-matcha .ice-shape { fill: var(--bg-alt); opacity: 0.95; }

.iced-matcha .ice {
  transform-box: fill-box;
  transform-origin: center;
  animation: ice-bob 3.6s ease-in-out infinite;
}
.iced-matcha .ice-1 { animation-duration: 3.4s; animation-delay: 0s; }
.iced-matcha .ice-2 { animation-duration: 4.1s; animation-delay: .4s; }
.iced-matcha .ice-3 { animation-duration: 3.8s; animation-delay: 1.1s; }

@keyframes ice-bob {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(2px, -3px); }
}

@media (prefers-reduced-motion: reduce) {
  .iced-matcha .ice { animation: none; }
}

@media (max-width: 900px) {
  .iced-matcha { display: none; }
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 100%;
  margin: 0;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-actions svg { flex-shrink: 0; }

.hero-links {
  display: flex;
  gap: 20px;
}
.hero-links a {
  color: var(--text-faint);
  transition: color 0.15s ease, transform 0.15s ease;
  display: inline-flex;
}
.hero-links a:hover { color: var(--accent); transform: translateY(-2px); }

/* ---------- Sections ---------- */
.section {
  position: relative;
  padding: 56px 24px;
  border-top: 1px solid var(--border);
  scroll-margin-top: 84px;
}

.section::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 50%;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--border-strong);
  transform: translateX(-50%) rotate(45deg);
}
.section.matcha::before { background: var(--accent); }
.section.latte::before { background: var(--latte); }
.section.berry::before { background: var(--berry); }

.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-faint);
  margin: 0 0 14px;
}

/* ---------- Icon badges ---------- */
.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}
.icon-badge.matcha { background: var(--accent-soft); color: var(--accent-dark); }
.icon-badge.latte { background: var(--latte-soft); color: var(--latte-dark); }
.icon-badge.berry { background: var(--berry-soft); color: var(--berry-dark); }

.eyebrow-badge { width: 38px; height: 38px; }
.eyebrow-badge svg { width: 21px; height: 21px; }

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
}

/* ---------- About ---------- */
.about-content {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 44px;
  align-items: start;
}

.about-photo img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent-soft);
  box-shadow: var(--shadow);
}

.about-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-left: 3px solid var(--accent);
  padding-left: 28px;
}

.about-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin: 0;
}

/* ---------- Education ---------- */
.edu-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.edu-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.edu-head h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.edu-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.edu-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.edu-dates {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
}

.edu-courses-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 14px;
}

/* ---------- Chip list (shared: courses, skills) ---------- */
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip-list li, .chip-list span {
  font-size: 0.85rem;
  padding: 8px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
}

/* ---------- Experience timeline ---------- */
.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -34px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.timeline-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.timeline-head h3 {
  font-size: 1.1rem;
  font-weight: 700;
}
.timeline-head .at { font-weight: 500; color: var(--text-muted); }

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.timeline-content ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.timeline-content li {
  color: var(--text-muted);
  font-size: 0.95rem;
  padding-left: 18px;
  position: relative;
}
.timeline-content li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border-strong);
}

/* ---------- Projects ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}

.project-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.project-tagline {
  font-size: 0.85rem;
  color: var(--accent-dark);
  font-weight: 500;
  margin: 0 0 16px;
}

.project-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
  flex-grow: 1;
}
.project-card li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}
.project-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-strong);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.project-link:hover { color: var(--accent-dark); }
.tag-list span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 5px 10px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  border-radius: 6px;
}

.projects-more {
  margin-top: 32px;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.projects-more a {
  color: var(--accent);
  font-weight: 600;
}
.projects-more a:hover { text-decoration: underline; }

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}

.skill-group h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  margin-bottom: 16px;
}

.skill-group h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.skill-group .chip-list span {
  background: var(--accent-soft);
  color: var(--accent-dark);
  border-color: transparent;
}

.skill-group.latte h3::before { background: var(--latte); }
.skill-group.latte .chip-list span {
  background: var(--latte-soft);
  color: var(--latte-dark);
}

.skill-group.berry h3::before { background: var(--berry); }
.skill-group.berry .chip-list span {
  background: var(--berry-soft);
  color: var(--berry-dark);
}

/* ---------- Contact ---------- */
.contact-section { text-align: center; }
.contact-section .section-title { margin-bottom: 16px; }

.contact-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 480px;
  margin: 0 auto 36px;
}

.contact-actions { margin-bottom: 28px; }

.contact-links {
  font-size: 0.9rem;
  color: var(--text-faint);
}
.contact-links a { font-weight: 600; color: var(--text-muted); }
.contact-links a:hover { color: var(--accent); }
.contact-links .sep { margin: 0 10px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 24px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .about-content { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .about-photo img { width: 140px; height: 140px; }
  .about-copy { border-left: none; padding-left: 0; text-align: left; }

  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .nav-links.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-links li { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-links li:last-child { border-bottom: none; padding-top: 16px; }
  .nav-links .btn-small { width: 100%; justify-content: center; }

  .hero { padding: 64px 24px 48px; }
  .section { padding: 44px 24px; }

  .edu-head { flex-direction: column; }
  .edu-meta { align-items: flex-start; }

  .footer-inner { flex-direction: column; gap: 6px; }
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--text);
  color: var(--bg-alt);
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 2000;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}