:root {
  --ink: #0d2135;
  --ink-2: #123049;
  --ink-3: #16395a;
  --paper: #eaf2f8;
  --paper-dim: #b9cddd;
  --grid-line: rgba(234, 242, 248, 0.07);
  --grid-line-strong: rgba(234, 242, 248, 0.14);
  --accent: #ff7a45;
  --accent-2: #5fd0c4;
  --accent-soft: rgba(255, 122, 69, 0.14);
  --danger: #ff6b6b;
  --radius: 2px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --max-width: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

img { max-width: 100%; display: block; }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--paper-dim); }

.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 0%, transparent 80%);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 18px;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--accent-2);
}

.section {
  position: relative;
  padding: 96px 0;
  border-bottom: 1px dashed var(--grid-line-strong);
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
}

.corner-frame {
  position: relative;
  padding: 26px;
  background: linear-gradient(180deg, var(--ink-2), var(--ink-3));
  border: 1px solid var(--grid-line-strong);
}

.corner-frame::before,
.corner-frame::after,
.corner-frame .cf-a,
.corner-frame .cf-b {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--accent-2);
}

.corner-frame::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.corner-frame::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }
.corner-frame .cf-a { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.corner-frame .cf-b { bottom: -1px; left: -1px; border-right: none; border-top: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 13px 26px;
  border: 1px solid var(--accent);
  color: var(--paper);
  background: transparent;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
  position: relative;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #10151a;
  font-weight: 600;
}

.btn-primary:hover { background: #ff8f61; }

.btn-ghost:hover { background: var(--accent-soft); }

.site-announcement {
  display: none;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  color: #10151a;
  padding: 11px 28px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  position: relative;
  z-index: 60;
}

.site-announcement.show { display: flex; }

.announce-badge {
  background: #10151a;
  color: var(--paper);
  padding: 4px 10px;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  font-weight: 600;
  white-space: nowrap;
}

.announce-text { flex: 1; min-width: 200px; font-weight: 600; }

.announce-link {
  text-decoration: underline;
  font-weight: 600;
  white-space: nowrap;
}

.announce-close {
  background: transparent;
  border: none;
  color: #10151a;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

@media (max-width: 720px) {
  .site-announcement { padding: 10px 16px; }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 33, 53, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--grid-line-strong);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--accent-2);
  color: var(--accent-2);
  padding: 6px 9px;
  letter-spacing: 0.05em;
}

.brand-mark.small { padding: 4px 7px; font-size: 0.8rem; }

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }

.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 1rem; }

.brand-role { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.14em; color: var(--paper-dim); }

.main-nav { display: flex; gap: 6px; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--paper-dim);
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-index { color: var(--accent); font-size: 0.7rem; }

.nav-link:hover, .nav-link.active { color: var(--paper); border-color: var(--grid-line-strong); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--grid-line-strong);
  cursor: pointer;
}

.nav-toggle span { width: 20px; height: 2px; background: var(--paper); margin: 0 auto; transition: transform 0.25s ease, opacity 0.25s ease; }

.hero {
  padding: 76px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.title-block {
  border: 1px solid var(--grid-line-strong);
  padding: 22px 26px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--paper-dim);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 24px;
  margin-top: 34px;
  max-width: 460px;
}

.title-block div span { display: block; color: var(--accent-2); letter-spacing: 0.1em; text-transform: uppercase; font-size: 0.62rem; margin-bottom: 4px; }

.hero h1 {
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  line-height: 1.04;
}

.hero h1 .accent-text { color: var(--accent); }

.hero-lead { font-size: 1.08rem; max-width: 520px; }

.hero-cta { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

.typed-line { font-family: var(--font-mono); color: var(--accent-2); font-size: 0.95rem; min-height: 1.4em; }

.typed-cursor { display: inline-block; width: 8px; background: var(--accent-2); margin-left: 2px; animation: blink 1s steps(1) infinite; }

@keyframes blink { 50% { opacity: 0; } }

.schematic-wrap { position: relative; }

.schematic-wrap svg { width: 100%; height: auto; }

.schem-path {
  fill: none;
  stroke: var(--accent-2);
  stroke-width: 1.4;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: draw 2.6s ease forwards 0.3s;
}

.schem-node {
  fill: var(--ink);
  stroke: var(--accent);
  stroke-width: 1.6;
  opacity: 0;
  animation: pop 0.5s ease forwards;
}

.schem-label { font-family: var(--font-mono); font-size: 9px; fill: var(--paper-dim); letter-spacing: 0.05em; }

@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes pop { to { opacity: 1; } }

.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px dashed var(--grid-line-strong);
  border-bottom: 1px dashed var(--grid-line-strong);
}

.stat-cell {
  padding: 26px 20px;
  border-left: 1px dashed var(--grid-line-strong);
  text-align: center;
}

.stat-cell:first-child { border-left: none; }

.stat-num { font-family: var(--font-display); font-size: 2rem; color: var(--accent); font-weight: 600; }

.stat-label { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--paper-dim); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }

.reveal.in-view { opacity: 1; transform: translateY(0); }

.projects-preview-grid, .projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.project-card {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--grid-line-strong);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.project-card:hover { transform: translateY(-6px); border-color: var(--accent-2); }

.project-thumb {
  aspect-ratio: 16/10;
  background: var(--ink-3) center/cover no-repeat;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-thumb .placeholder-mark {
  font-family: var(--font-mono);
  color: var(--paper-dim);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.project-thumb::after {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(234, 242, 248, 0.18);
  pointer-events: none;
}

.project-body { padding: 22px 22px 26px; }

.project-index { font-family: var(--font-mono); color: var(--accent); font-size: 0.72rem; letter-spacing: 0.1em; }

.project-body h3 { margin: 10px 0 8px; font-size: 1.24rem; }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 6px; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 4px 9px;
  border: 1px solid var(--grid-line-strong);
  color: var(--paper-dim);
}

.project-link-row { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; }

.view-link { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent-2); display: inline-flex; align-items: center; gap: 6px; }

.timeline { position: relative; padding-left: 32px; }

.timeline::before { content: ''; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 1px; background: var(--grid-line-strong); }

.timeline-item { position: relative; padding-bottom: 42px; }

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

.timeline-item::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 4px;
  width: 11px;
  height: 11px;
  background: var(--ink);
  border: 2px solid var(--accent);
}

.timeline-dates { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent-2); letter-spacing: 0.06em; text-transform: uppercase; }

.timeline-item h3 { font-size: 1.2rem; margin: 8px 0 2px; }

.timeline-item .role-company { color: var(--paper-dim); font-family: var(--font-mono); font-size: 0.82rem; margin-bottom: 10px; display: block; }

.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 36px; }

.skills-category h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  border-bottom: 1px dashed var(--grid-line-strong);
  padding-bottom: 12px;
  margin-bottom: 18px;
}

.skill-row { margin-bottom: 16px; }

.skill-row-top { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.8rem; margin-bottom: 6px; }

.skill-bar-track { height: 6px; background: var(--ink-3); position: relative; }

.skill-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent-2), var(--accent)); width: 0; transition: width 1.2s ease; }

.education-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }

.edu-card { padding: 26px; }

.edu-card .timeline-dates { display: block; margin-bottom: 10px; }

.bio-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }

.bio-photo {
  aspect-ratio: 4/5;
  background: var(--ink-2);
  border: 1px solid var(--grid-line-strong);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  color: var(--paper-dim);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.gallery-thumb {
  aspect-ratio: 16/10;
  background: var(--ink-3) center/cover no-repeat;
  border: 1px solid var(--grid-line-strong);
  cursor: pointer;
  position: relative;
  transition: border-color 0.2s ease;
}

.gallery-thumb:hover { border-color: var(--accent); }

.gallery-thumb .placeholder-mark { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 0.7rem; color: var(--paper-dim); }

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 32, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 40px;
}

.lightbox.open { display: flex; }

.lightbox-inner { max-width: 900px; width: 100%; position: relative; }

.lightbox-inner img { width: 100%; border: 1px solid var(--grid-line-strong); }

.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  background: var(--ink-2);
  border: 1px solid var(--grid-line-strong);
  color: var(--paper);
  cursor: pointer;
  font-family: var(--font-mono);
  padding: 10px 14px;
}

.lightbox-close { top: -50px; right: 0; }
.lightbox-prev { left: -56px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: -56px; top: 50%; transform: translateY(-50%); }

.lightbox-counter { position: absolute; bottom: -34px; left: 0; font-family: var(--font-mono); font-size: 0.75rem; color: var(--paper-dim); }

.project-detail-head { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: start; }

.meta-list { list-style: none; padding: 0; margin: 24px 0; font-family: var(--font-mono); font-size: 0.82rem; }

.meta-list li { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px dashed var(--grid-line-strong); }

.meta-list li span:first-child { color: var(--paper-dim); }

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

.form-field { margin-bottom: 20px; }

.form-field label { display: block; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 8px; }

.form-field input, .form-field textarea, .form-field select {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--grid-line-strong);
  color: var(--paper);
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.form-field textarea { resize: vertical; min-height: 130px; }

.form-field input:focus, .form-field textarea:focus, .form-field select:focus { outline: none; border-color: var(--accent-2); }

.form-status { font-family: var(--font-mono); font-size: 0.82rem; margin-top: 12px; min-height: 1.2em; }

.form-status.ok { color: var(--accent-2); }
.form-status.err { color: var(--danger); }

.subscribe-form { display: flex; gap: 0; }

.subscribe-form input { flex: 1; background: var(--ink); border: 1px solid var(--grid-line-strong); color: var(--paper); padding: 10px 12px; font-family: var(--font-body); font-size: 0.85rem; }

.subscribe-form button { background: var(--accent); color: #10151a; border: 1px solid var(--accent); font-family: var(--font-mono); font-size: 0.78rem; padding: 10px 14px; cursor: pointer; font-weight: 600; }

.subscribe-status { font-family: var(--font-mono); font-size: 0.75rem; margin-top: 8px; color: var(--accent-2); }

.site-footer { border-top: 1px solid var(--grid-line-strong); background: var(--ink-2); position: relative; z-index: 1; }

.footer-inner { max-width: var(--max-width); margin: 0 auto; padding: 56px 28px 32px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 32px; }

.footer-label { display: block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 14px; }

.footer-block a { display: block; color: var(--paper-dim); padding: 5px 0; font-size: 0.9rem; }

.footer-block a:hover { color: var(--paper); }

.footer-bottom { border-top: 1px dashed var(--grid-line-strong); padding: 18px 28px; text-align: center; font-family: var(--font-mono); font-size: 0.72rem; color: var(--paper-dim); }

.page-hero { padding: 64px 0 40px; }

.page-hero h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); }

.admin-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; position: relative; z-index: 1; }

.admin-card { width: 100%; max-width: 400px; padding: 40px 34px; }

.admin-card h1 { font-size: 1.5rem; margin-bottom: 6px; }

.admin-dash { max-width: var(--max-width); margin: 0 auto; padding: 40px 28px 100px; position: relative; z-index: 1; }

.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 36px; flex-wrap: wrap; gap: 16px; }

.admin-panel { padding: 28px; margin-bottom: 32px; }

.admin-project-row { display: grid; grid-template-columns: 70px 1.4fr 1fr auto; gap: 18px; align-items: center; padding: 16px 0; border-bottom: 1px dashed var(--grid-line-strong); }

.admin-project-thumb { width: 70px; height: 50px; background: var(--ink-3) center/cover no-repeat; border: 1px solid var(--grid-line-strong); }

.admin-actions { display: flex; gap: 10px; }

.admin-actions .btn { padding: 8px 14px; font-size: 0.72rem; }

.file-drop {
  border: 1px dashed var(--grid-line-strong);
  padding: 30px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--paper-dim);
  cursor: pointer;
}

.file-drop.drag { border-color: var(--accent-2); color: var(--accent-2); }

.alert { font-family: var(--font-mono); font-size: 0.82rem; padding: 12px 16px; border: 1px solid var(--grid-line-strong); margin-bottom: 20px; }

.alert-ok { border-color: var(--accent-2); color: var(--accent-2); }

.alert-err { border-color: var(--danger); color: var(--danger); }

@media (max-width: 920px) {
  .hero-inner, .bio-grid, .contact-grid, .project-detail-head { grid-template-columns: 1fr; }
  .schematic-wrap { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink-2);
    flex-direction: column;
    border-bottom: 1px solid var(--grid-line-strong);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .main-nav.open { max-height: 400px; }
  .nav-link { padding: 16px 28px; border-bottom: 1px dashed var(--grid-line-strong); }
  .nav-toggle { display: flex; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .stat-cell:nth-child(3) { border-left: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .admin-project-row { grid-template-columns: 1fr; text-align: left; }
}