/* ============ TOKENS ============ */
:root {
  --bg: #fafaf9;
  --bg-alt: #f2f1ee;
  --text: #16161a;
  --text-muted: #6b6b70;
  --border: #e4e3df;
  --accent: #3d5afe;
  --accent-soft: #e8ebff;
  --card-bg: #ffffff;
  --shadow: 0 1px 2px rgba(20,20,25,0.04), 0 8px 24px rgba(20,20,25,0.05);
  --radius: 14px;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --maxw: 1100px;
  --transition: 220ms cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
  --bg: #101012;
  --bg-alt: #17181b;
  --text: #f2f2f0;
  --text-muted: #9a9aa0;
  --border: #26272b;
  --accent: #7c8dff;
  --accent-soft: #1c2140;
  --card-bg: #17181b;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.35);
}

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

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

h1, h2, h3 { font-family: var(--font-display); margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.section-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.scrolled { border-bottom-color: var(--border); }

.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.logo-dot, .accent-dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 36px;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 1.5px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), transform var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); transform: translateY(-1px); }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

.menu-toggle {
  display: none;
  width: 36px; height: 36px;
  border: none;
  background: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.menu-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ HERO ============ */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 130px 28px 90px;
}

.hero-inner {
  max-width: 680px;
  text-align: center;
  margin: 0 auto;
}

.eyebrow {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.hero-name-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
}

.hero-title {
  font-size: clamp(2.6rem, 7vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero-role {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 14px;
}

.hero-sub {
  margin-top: 20px;
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  margin-top: 36px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.btn-primary {
  background: var(--text);
  color: var(--bg);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.btn-resume {
  background: var(--accent);
  color: #fff;
  padding: 13px 30px;
  font-size: 1rem;
}
.btn-resume:hover { transform: translateY(-2px); box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 45%, transparent); }

.contact-resume {
  margin-top: 0;
}

.hero-socials {
  margin-top: 44px;
  display: flex;
  gap: 28px;
  justify-content: center;
  align-items: center;
}
.hero-socials a {
  color: var(--text-muted);
  transition: color var(--transition), transform var(--transition);
  display: inline-flex;
}
.hero-socials a:hover { color: var(--accent); transform: translateY(-2px); }

.scroll-cue {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px; height: 36px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
}
.scroll-cue span {
  position: absolute;
  top: 7px; left: 50%;
  width: 4px; height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--accent);
  animation: scrollCue 1.6s ease-in-out infinite;
}
@keyframes scrollCue {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 0; transform: translateY(12px); }
}

/* ============ SECTION HEADERS ============ */
.section-eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 44px;
}

/* ============ EXPERIENCE ============ */
.experience {
  padding: 64px 0 100px;
}

.experience-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.experience-col-title {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.experience-col-sub {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 4px;
  margin-bottom: 24px;
}

.experience-entry {
  border-left: 2px solid var(--border);
  padding: 2px 0 2px 20px;
  margin-bottom: 24px;
  transition: border-color var(--transition);
}
.experience-entry:hover { border-color: var(--accent); }
.experience-entry:last-child { margin-bottom: 0; }

.experience-entry-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
}

.experience-role {
  font-weight: 600;
  font-size: 0.98rem;
}

.experience-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.experience-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 8px;
}

.experience-entry .project-tags {
  margin-top: 10px;
}

/* ============ WORK / PROJECTS ============ */
.work {
  padding: 80px 0 100px;
}
.work .section-title { margin-bottom: 10px; }
.work-hint {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 34px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}
.project-card:hover .project-card-cta { color: var(--accent); gap: 8px; }

.project-thumb {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--accent-soft), var(--bg-alt));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  position: relative;
  overflow: hidden;
}
.project-thumb img { width: 100%; height: 100%; object-fit: cover; }

.project-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.project-tag {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 600;
  font-family: var(--font-display);
}

.project-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  flex: 1;
}

.project-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition), gap var(--transition);
}

.project-links {
  display: flex;
  gap: 16px;
  margin-top: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}
.project-links a {
  color: var(--text);
  border-bottom: 1.5px solid var(--border);
  transition: border-color var(--transition), color var(--transition);
}
.project-links a:hover { color: var(--accent); border-color: var(--accent); }

/* ============ CONTACT ============ */
.contact { padding: 120px 0; }
.contact-inner { text-align: center; }
.contact-inner .section-title {
  font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  margin-bottom: 20px;
}
.contact-sub {
  color: var(--text-muted);
  max-width: 460px;
  margin: 0 auto;
  font-size: 1.02rem;
}
.contact-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}
.contact-email {
  display: inline-block;
  margin-top: 30px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  transition: border-color var(--transition), color var(--transition);
}
.contact-email:hover { color: var(--accent); border-color: var(--accent); }

.contact-phone {
  display: inline-block;
  margin-top: -12px;
  color: var(--text-muted);
  font-size: 1.05rem;
  font-weight: 500;
  transition: color var(--transition);
}
.contact-phone:hover { color: var(--accent); }

.contact-socials { margin-top: 34px; }

/* ============ PROJECT DETAIL PAGE ============ */
.detail-top {
  padding: 130px 28px 0;
  max-width: 780px;
}
.back-link {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 28px;
  transition: color var(--transition);
}
.back-link:hover { color: var(--accent); }

.detail-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 16px;
}
.detail-category {
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: 8px;
}

.detail-rows {
  max-width: 960px;
  margin-top: 56px;
  display: flex;
  flex-direction: column;
  gap: 70px;
  padding-bottom: 30px;
}

.detail-row {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 44px;
  align-items: center;
}
.detail-row-reverse .detail-row-image { order: 2; }
.detail-row-reverse .detail-row-body { order: 1; }

.detail-row-image {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent-soft), var(--bg-alt));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  overflow: hidden;
}
.detail-row-image img { width: 100%; height: 100%; object-fit: cover; }

.detail-row-image-group {
  aspect-ratio: auto;
  background: none;
  border: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.detail-row-image-group img {
  aspect-ratio: 4 / 3;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.detail-row-body {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.detail-row-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.detail-text-only {
  max-width: 640px;
  margin-top: 56px;
  padding-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}
.detail-text-only .detail-row-section {
  border-left: 2px solid var(--border);
  padding: 2px 0 2px 24px;
  transition: border-color var(--transition);
}
.detail-text-only .detail-row-section:hover { border-color: var(--accent); }
.detail-block-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.detail-row-text {
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.75;
  max-width: 54ch;
}
.detail-row-list {
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.6;
  padding-left: 20px;
  max-width: 54ch;
}
.detail-row-list li { margin-bottom: 10px; }
.detail-row-list li:last-child { margin-bottom: 0; }

.detail-links { max-width: 960px; padding-bottom: 20px; }
.detail-links .project-links { font-size: 0.95rem; }

.detail-footer-nav {
  padding-bottom: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.detail-footer-contact {
  display: flex;
  align-items: center;
  gap: 24px;
}
.detail-footer-contact .hero-socials {
  margin-top: 0;
}

/* ============ RESUME PAGE ============ */
.resume-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 48px;
  align-items: start;
  max-width: 1000px;
  margin-top: 48px;
  padding-bottom: 90px;
}

.resume-image-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--card-bg);
}
.resume-image {
  width: 100%;
  display: block;
}

.resume-side {
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: 100px;
}
.resume-side .btn {
  width: 100%;
  justify-content: center;
}

.resume-side-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
}
.resume-side-contact a {
  color: var(--text-muted);
  transition: color var(--transition);
  word-break: break-word;
}
.resume-side-contact a:hover { color: var(--accent); }

/* ============ FOOTER ============ */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.back-to-top {
  font-weight: 500;
  transition: color var(--transition);
}
.back-to-top:hover { color: var(--accent); }

/* ============ SCROLL REVEAL ============ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms cubic-bezier(.4,0,.2,1), transform 700ms cubic-bezier(.4,0,.2,1);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESPONSIVE ============
   Breakpoints target: desktop (>1024px), laptop/iPad landscape (901-1024px),
   tablet/iPad portrait (641-900px), mobile (<=640px).
*/

/* ---- Laptop / iPad landscape ---- */
@media (max-width: 1024px) {
  .section-inner { padding: 0 24px; }
  .nav-inner { padding: 16px 24px; }
  .nav-links { gap: 26px; }
}

/* ---- Tablet / iPad portrait ---- */
@media (max-width: 900px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .experience-columns { grid-template-columns: 1fr; gap: 48px; }

  .detail-row,
  .detail-row-reverse {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .detail-row-reverse .detail-row-image { order: 1; }
  .detail-row-reverse .detail-row-body { order: 2; }
  .detail-row-text,
  .detail-row-list { max-width: none; }
  .detail-rows { gap: 48px; }

  .resume-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .resume-side {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .resume-side .btn { width: auto; }
}

/* ---- Mobile ---- */
@media (max-width: 640px) {
  .nav-links {
    position: fixed;
    top: 66px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 20px 28px 28px;
    gap: 18px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    max-height: 80vh;
    overflow-y: auto;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .menu-toggle { display: flex; }

  .hero { padding: 110px 20px 70px; }
  .hero-name-row { flex-direction: column; gap: 20px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; }

  .experience { padding: 40px 0 70px; }
  .work { padding: 60px 0 80px; }
  .contact { padding: 80px 0; }

  .experience-entry-head { flex-direction: column; align-items: flex-start; gap: 4px; }

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

  .footer-inner { flex-direction: column; text-align: center; }

  .detail-top { padding: 90px 20px 0; }
  .detail-rows { margin-top: 36px; gap: 36px; }
}

/* ---- Small phones ---- */
@media (max-width: 380px) {
  .section-inner { padding: 0 18px; }
  .hero { padding-left: 18px; padding-right: 18px; }
  .btn { padding: 12px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}