/* =========================================================
   Codewenn — "Systems Map" design system
   Ground rule: hairlines + nodes/lines as the structural
   device (this is a systems-integration portfolio), not
   cards, shadows, or decorative numbering.
   ========================================================= */

:root {
  --ink:        #0e141b;
  --panel:      #121a22;
  --panel-2:    #17202a;
  --line:       #253140;
  --line-soft:  #1b2530;
  --text:       #e7edf2;
  --muted:      #8ea0b2;
  --muted-2:    #5c6d7d;
  --accent:     #ff9d4d;
  --accent-ink: #241505;
  --accent-dim: rgba(255, 157, 77, 0.14);

  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body:    "Inter", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, monospace;

  --fs-h1: clamp(2.25rem, 1.55rem + 3vw, 3.6rem);
  --fs-h2: clamp(1.7rem, 1.4rem + 1.4vw, 2.35rem);
  --fs-h3: clamp(1.05rem, 0.98rem + 0.3vw, 1.2rem);
  --fs-lead: clamp(1.05rem, 1rem + 0.3vw, 1.2rem);

  --container: 1180px;
  --pad-side: clamp(1.25rem, 4.5vw, 3rem);
  --section-pad: clamp(4rem, 6vw, 6.5rem);

  --radius: 8px;
  --radius-sm: 4px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- reset ---------- */
* , *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * , *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-side);
}

section { padding-block: var(--section-pad); }

.section-head {
  max-width: 640px;
  margin-bottom: clamp(2.5rem, 4vw, 3.5rem);
}
.section-head--center { max-width: 620px; margin-inline: auto; text-align: center; }

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.9rem;
}
.section-kicker::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}
.section-head p {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: var(--fs-lead);
  max-width: 52ch;
}
.section-head--center p { margin-inline: auto; }

.hairline { border: 0; border-top: 1px solid var(--line); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s var(--ease), background-color 0.15s var(--ease), border-color 0.15s var(--ease), color 0.15s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { background: #ffb06a; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 20, 27, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 72px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--text);
}
.wordmark__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-dim);
  flex-shrink: 0;
}

.site-nav { display: flex; align-items: center; gap: 2.1rem; }
.site-nav a {
  font-size: 0.94rem;
  color: var(--muted);
  transition: color 0.15s var(--ease);
  position: relative;
}
.site-nav a:hover { color: var(--text); }

.header-actions { display: flex; align-items: center; gap: 1rem; }
.header-email {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
}
.header-email:hover { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}
.nav-toggle span {
  width: 22px; height: 1.5px;
  background: var(--text);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  padding-top: clamp(3.5rem, 7vw, 5.5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}
.hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: center;
}

.hero-byline {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.hero-byline img {
  width: 34px; height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--line);
}
.hero-byline strong { color: var(--text); font-weight: 600; }

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--text);
  max-width: 15ch;
}

.hero p.lead {
  margin-top: 1.5rem;
  font-size: var(--fs-lead);
  color: var(--muted);
  max-width: 46ch;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2.1rem;
}
.hero-cta .link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease);
}
.hero-cta .link-arrow:hover { color: var(--accent); border-color: var(--accent); }

.hero-stats {
  display: flex;
  gap: clamp(1.5rem, 3vw, 2.75rem);
  margin-top: clamp(2.75rem, 5vw, 3.75rem);
  padding-top: 1.75rem;
  border-top: 1px solid var(--line-soft);
}
.hero-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  color: var(--text);
  font-weight: 500;
}
.hero-stat__num .accent { color: var(--accent); }
.hero-stat__label {
  margin-top: 0.3rem;
  font-size: 0.82rem;
  color: var(--muted-2);
}

/* ---------- hero diagram ---------- */
.hero-diagram {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-inline: auto;
}
.hero-diagram svg { width: 100%; height: 100%; overflow: visible; }

.node-path {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
}
.node-path--flow {
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
  animation: dashflow 22s linear infinite;
  opacity: 0.85;
}
@keyframes dashflow {
  to { stroke-dashoffset: -400; }
}

.node-circle {
  fill: var(--panel-2);
  stroke: #33404f;
  stroke-width: 1.5;
}
.node-circle--core {
  fill: #1c2733;
  stroke: var(--accent);
  stroke-width: 2;
}
.node-dot { fill: var(--accent); }

.node-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  fill: var(--text);
}
.node-label--sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  fill: var(--muted-2);
}
.node-label--core {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
  fill: var(--text);
}

.hero-diagram [data-reveal] {
  opacity: 0;
  transform: scale(0.94);
  transform-origin: center;
}
.hero-diagram.is-ready [data-reveal] {
  animation: nodeIn 0.6s var(--ease) forwards;
}

@keyframes nodeIn {
  to { opacity: 1; transform: scale(1); }
}

/* ---------- services ---------- */
.services-list {
  position: relative;
  border-top: 1px solid var(--line);
}
.service-row {
  display: grid;
  grid-template-columns: 1.1fr 1.9fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  padding-block: clamp(1.75rem, 3vw, 2.5rem);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.service-row::before {
  content: "";
  position: absolute;
  left: -20px;
  top: clamp(1.75rem, 3vw, 2.5rem);
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1.5px solid var(--line);
  transform: translateX(-50%);
}
.services-list::after {
  content: "";
  position: absolute;
  left: -20px;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--line);
  transform: translateX(-50%);
}
.service-row h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--text);
}
.service-row p {
  color: var(--muted);
  max-width: 56ch;
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}
.service-tags span {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.55rem;
}

/* ---------- works ---------- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.work-card {
  background: var(--ink);
  padding: 0;
  display: flex;
  flex-direction: column;
}
.work-card__img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--panel);
}
.work-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.work-card:hover .work-card__img img { transform: scale(1.04); }
.work-card__body {
  padding: 1.5rem clamp(1.25rem, 2vw, 1.75rem);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.work-card__tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--accent);
  margin-bottom: 0.6rem;
}
.work-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
}
.work-card__desc {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

/* ---------- resume ---------- */
.resume-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
}
.resume-col h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 2rem;
}
.timeline { position: relative; padding-left: 24px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 4px; top: 6px; bottom: 6px;
  width: 1px;
  background: var(--line);
}
.timeline-item {
  position: relative;
  padding-bottom: 1.9rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -24px; top: 6px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1.5px solid var(--line);
}
.timeline-item--current::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.timeline-time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted-2);
}
.timeline-title {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 0.25rem;
}
.timeline-org { color: var(--muted); font-size: 0.9rem; margin-top: 0.15rem; }

.timeline-more {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s var(--ease);
}
.timeline-more.is-open { max-height: 900px; }
.timeline-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.5rem;
  padding-left: 24px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}
.timeline-toggle:hover { color: var(--accent); }
.timeline-toggle svg { transition: transform 0.25s var(--ease); width: 11px; height: 11px; }
.timeline-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }

/* ---------- skills ---------- */
.skills-section { padding-block: clamp(3.5rem, 5vw, 5rem); border-block: 1px solid var(--line-soft); background: var(--panel); }
.skills-marquee { display: flex; flex-direction: column; gap: 1rem; margin-top: 2.5rem; }
.skills-marquee__row { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.skills-marquee__track { display: flex; gap: 0.75rem; width: max-content; animation: marquee 38s linear infinite; }
.skills-marquee__track--right { animation-direction: reverse; }
.skills-marquee__row:hover .skills-marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

.skill-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  flex-shrink: 0;
}
.skill-chip__icon { width: 18px; height: 18px; display: flex; align-items: center; justify-content: center; }
.skill-chip__icon img { width: 100%; height: 100%; object-fit: contain; }
.skill-chip span { font-size: 0.87rem; color: var(--muted); white-space: nowrap; }

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1rem; }
.form-group--full { grid-column: 1 / -1; }
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.15s var(--ease);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted-2); }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); outline: none; }
.form-group textarea { min-height: 130px; resize: vertical; }

.form-response {
  font-size: 0.88rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  border: 1px solid var(--line);
}
.form-response--success { color: #8fe3b0; border-color: #2f5c41; background: rgba(79, 200, 122, 0.08); }
.form-response--error { color: #ffb0a0; border-color: #6b3a30; background: rgba(255, 111, 80, 0.08); }

.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-info li { display: flex; align-items: center; gap: 1rem; }
.contact-info .icon-box {
  width: 42px; height: 42px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 1.05rem;
}
.contact-info p { font-size: 0.8rem; color: var(--muted-2); }
.contact-info a { font-size: 1rem; color: var(--text); font-weight: 500; }
.contact-info a:hover { color: var(--accent); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding-block: 2.5rem;
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.footer-nav { display: flex; gap: 1.75rem; flex-wrap: wrap; }
.footer-nav a { color: var(--muted); font-size: 0.9rem; }
.footer-nav a:hover { color: var(--accent); }
.copy-text { color: var(--muted-2); font-size: 0.85rem; font-family: var(--font-mono); }

/* ---------- back to top ---------- */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--panel-2);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  color: var(--text);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), border-color 0.2s var(--ease);
  z-index: 90;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- reveal-on-scroll ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-animate].is-visible { opacity: 1; transform: translateY(0); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 992px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-diagram { max-width: 380px; margin-top: 1rem; }
  .service-row { grid-template-columns: 1fr; }
  .resume-grid { grid-template-columns: 1fr; gap: 3rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-info { order: -1; flex-direction: row; flex-wrap: wrap; gap: 1.5rem 2.5rem; }
}

@media (max-width: 768px) {
  .site-nav, .header-email { display: none; }
  .site-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--ink);
    border-bottom: 1px solid var(--line-soft);
    padding: 1.5rem var(--pad-side) 2rem;
    gap: 1.25rem;
    align-items: flex-start;
  }
  .nav-toggle { display: flex; }
  .works-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
}

@media (max-width: 520px) {
  .services-list, .services-list::after, .service-row::before { margin-left: 0; }
  .services-list { padding-left: 0; }
  .services-list::after { display: none; }
  .service-row::before { display: none; }
}