/* ============================================================
   TWONE · Personal Site
   EVA × Game of Life × Cyberpunk
   ============================================================ */

:root {
  --bg: #0a0a0d;
  --bg-2: #11121a;
  --ink: #e6e8ec;
  --ink-dim: #8a8f9c;
  --eva-orange: #ff6a00;
  --eva-purple: #7b2d8e;
  --eva-green: #00ff41;
  --eva-cyan: #30e8ff;
  --eva-yellow: #ffcf00;
  --border: rgba(0, 255, 65, 0.22);
  --border-strong: rgba(0, 255, 65, 0.55);
  --panel: rgba(10, 12, 18, 0.72);

  --font-title: 'Orbitron', 'Noto Sans SC', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', sans-serif;
  --font-mono: 'Space Mono', ui-monospace, monospace;
  --font-pixel: 'Press Start 2P', monospace;

  --pad-x: clamp(24px, 8vw, 180px);
  --section-gap: clamp(80px, 16vh, 180px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background canvas */
#gol-bg {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  background:
    radial-gradient(ellipse at top, rgba(123, 45, 142, 0.12), transparent 60%),
    radial-gradient(ellipse at bottom, rgba(255, 106, 0, 0.08), transparent 60%),
    linear-gradient(180deg, #07070c 0%, #0a0a12 100%);
}

/* Scanlines overlay */
.scanlines {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.025) 0px,
    rgba(255, 255, 255, 0.025) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 0.5;
}

/* ============================================================
   HUD fixed overlays (EVA corners)
   ============================================================ */
.hud {
  position: fixed;
  z-index: 50;
  font-family: var(--font-pixel);
  font-size: 8px;
  line-height: 1.8;
  color: var(--eva-green);
  opacity: 0.55;
  pointer-events: none;
  letter-spacing: 0.5px;
}
.hud-tl { top: 18px; left: 18px; }
.hud-tr { top: 18px; right: 18px; text-align: right; }
.hud-bl { bottom: 18px; left: 18px; }
.hud-br { bottom: 18px; right: 18px; text-align: right; color: var(--eva-orange); }

@media (max-width: 820px) {
  .hud { font-size: 6px; }
  .hud-tr, .hud-br { display: none; }
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--pad-x);
  background: rgba(7, 7, 12, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: 2px;
  color: var(--eva-green);
  text-shadow: 0 0 12px rgba(0, 255, 65, 0.6);
}
.nav-menu {
  display: flex;
  list-style: none;
  gap: 28px;
}
.nav-menu a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
  text-decoration: none;
  letter-spacing: 1px;
  transition: color .3s, text-shadow .3s;
}
.nav-menu a:hover {
  color: var(--eva-green);
  text-shadow: 0 0 8px rgba(0, 255, 65, 0.8);
}
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-strong);
  width: 38px; height: 34px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--eva-green);
}

@media (max-width: 820px) {
  .nav { padding: 14px 20px; }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    background: rgba(7, 7, 12, 0.96);
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s ease;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-toggle { display: flex; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 120px var(--pad-x) 80px;
  position: relative;
  text-align: center;
}
.hero-inner {
  max-width: 900px;
  width: 100%;
  position: relative;
  padding: 60px 40px;
}
.hero-crosshair {
  position: absolute;
  color: var(--eva-orange);
  font-family: var(--font-mono);
  font-size: 22px;
  opacity: 0.7;
}
.hero-crosshair.tl { top: 0; left: 0; }
.hero-crosshair.tr { top: 0; right: 0; }
.hero-crosshair.bl { bottom: 0; left: 0; }
.hero-crosshair.br { bottom: 0; right: 0; }

.hero-title {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(48px, 10vw, 120px);
  letter-spacing: 6px;
  color: var(--ink);
  text-shadow:
    0 0 20px rgba(0, 255, 65, 0.35),
    0 0 4px rgba(255, 106, 0, 0.4);
  margin-bottom: 8px;
  line-height: 1;
}
.cursor {
  color: var(--eva-green);
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-sub-cn {
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--eva-green);
  letter-spacing: 8px;
  margin-bottom: 48px;
  opacity: 0.85;
}

.hero-tagline {
  margin-bottom: 48px;
}
.hero-tagline .line {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.6vw, 18px);
  color: var(--ink);
  margin: 8px 0;
  opacity: 0;
  transform: translateY(10px);
  animation: fadein .8s ease-out forwards;
}
.hero-tagline .line:nth-child(1) { animation-delay: 1.2s; }
.hero-tagline .line:nth-child(2) { animation-delay: 1.5s; }
.hero-tagline .line:nth-child(3) { animation-delay: 1.8s; }
@keyframes fadein { to { opacity: 1; transform: translateY(0); } }

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--eva-orange);
  padding: 10px 22px;
  border: 1px solid rgba(255, 106, 0, 0.55);
  background: rgba(255, 106, 0, 0.05);
  letter-spacing: 1px;
  margin-bottom: 48px;
  opacity: 0;
  animation: fadein 1s 2.1s forwards;
}

.hero-social {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadein 1s 2.4s forwards;
}
.hero-social a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-dim);
  text-decoration: none;
  letter-spacing: 1px;
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
  transition: all .3s;
}
.hero-social a:hover {
  color: var(--eva-green);
  border-bottom-color: var(--eva-green);
  text-shadow: 0 0 8px rgba(0, 255, 65, 0.6);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 2px;
}
.hero-scroll .arrow {
  display: inline-block;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ============================================================
   DIVIDERS
   ============================================================ */
.divider {
  margin: 0;
  height: 6px;
  width: 100%;
}
.divider.warn {
  background: repeating-linear-gradient(
    45deg,
    #ffcf00 0, #ffcf00 12px,
    #0a0a0d 12px, #0a0a0d 24px
  );
  opacity: 0.55;
}
.divider.line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--eva-green), transparent);
  opacity: 0.4;
}

/* ============================================================
   SECTION base
   ============================================================ */
.section {
  padding: var(--section-gap) var(--pad-x);
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
}
.section-tag {
  font-family: var(--font-pixel);
  font-size: 9px;
  color: var(--eva-green);
  opacity: 0.45;
  letter-spacing: 1px;
  margin-bottom: 40px;
}
.section-head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 80px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(38px, 6vw, 72px);
  letter-spacing: 4px;
  color: var(--ink);
  text-shadow: 0 0 18px rgba(0, 255, 65, 0.25);
}
.section-sub {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--eva-orange);
  letter-spacing: 4px;
  opacity: 0.85;
}
.sub-head {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--eva-green);
  letter-spacing: 2px;
  margin: 80px 0 40px;
  opacity: 0.8;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .75s cubic-bezier(.22,.68,0,1.2), transform .75s cubic-bezier(.22,.68,0,1.2);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
/* Stagger children inside grids */
.about-panels .panel.reveal:nth-child(2)     { transition-delay: .12s; }
.research-grid .research-card.reveal:nth-child(2) { transition-delay: .12s; }
.research-grid .research-card.reveal:nth-child(3) { transition-delay: .24s; }
.projects-grid .proj-card.reveal:nth-child(2) { transition-delay: .08s; }
.projects-grid .proj-card.reveal:nth-child(3) { transition-delay: .16s; }
.projects-grid .proj-card.reveal:nth-child(4) { transition-delay: .24s; }
.projects-grid .proj-card.reveal:nth-child(5) { transition-delay: .32s; }
.projects-grid .proj-card.reveal:nth-child(6) { transition-delay: .40s; }
.tl-row.reveal:nth-child(2)  { transition-delay: .06s; }
.tl-row.reveal:nth-child(3)  { transition-delay: .12s; }
.tl-row.reveal:nth-child(4)  { transition-delay: .18s; }
.tl-row.reveal:nth-child(5)  { transition-delay: .24s; }
.tl-row.reveal:nth-child(6)  { transition-delay: .30s; }
.tl-row.reveal:nth-child(7)  { transition-delay: .36s; }
.tl-row.reveal:nth-child(8)  { transition-delay: .42s; }
.tl-row.reveal:nth-child(9)  { transition-delay: .48s; }
.tl-row.reveal:nth-child(10) { transition-delay: .54s; }

/* ============================================================
   ABOUT
   ============================================================ */
.about-bio {
  max-width: 720px;
  margin: 0 auto 100px;
  text-align: center;
  font-size: 16px;
  color: var(--ink);
}
.about-bio p { margin: 20px 0; }
.about-bio em { color: var(--eva-cyan); font-style: normal; }
.about-bio .quote {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ink-dim);
  padding: 24px;
  border-left: 2px solid var(--eva-orange);
  border-right: 2px solid var(--eva-orange);
  margin-top: 40px;
}
.about-bio .quote strong {
  color: var(--eva-green);
  font-weight: 400;
}

.about-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
}
.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 32px 28px 28px;
  backdrop-filter: blur(4px);
  transition: border-color .4s, box-shadow .4s;
}
.panel::before,
.panel::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--eva-orange);
}
.panel::before { top: -2px; left: -2px; border-right: none; border-bottom: none; }
.panel::after { bottom: -2px; right: -2px; border-left: none; border-top: none; }
.panel:hover {
  border-color: var(--border-strong);
  box-shadow: 0 0 24px rgba(0, 255, 65, 0.15);
}
.panel-label {
  font-family: var(--font-pixel);
  font-size: 9px;
  color: var(--eva-orange);
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.panel-body p {
  margin-bottom: 18px;
  font-size: 14px;
  line-height: 1.7;
}
.panel-body p:last-child { margin-bottom: 0; }
.panel-body strong { color: var(--eva-green); font-weight: 500; }
.panel-body .gt { color: var(--eva-orange); margin-right: 6px; }
.panel-body .dim { color: var(--ink-dim); font-size: 12px; }

@media (max-width: 820px) {
  .about-panels { grid-template-columns: 1fr; gap: 28px; }
}

/* ============================================================
   EXPERIENCE
   ============================================================ */
.timeline-exp {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.exp-card {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  padding: 28px 32px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left-width: 4px;
  position: relative;
  transition: box-shadow .4s, border-color .4s, transform .4s;
}
.exp-card[data-accent="green"]  { border-left-color: var(--eva-green); }
.exp-card[data-accent="cyan"]   { border-left-color: var(--eva-cyan); }
.exp-card[data-accent="orange"] { border-left-color: var(--eva-orange); }
.exp-card[data-accent="purple"] { border-left-color: var(--eva-purple); }

.exp-card:hover {
  box-shadow: 0 0 28px rgba(0, 255, 65, 0.18);
  transform: translateX(4px);
}
.exp-year {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--eva-orange);
  letter-spacing: 1px;
  padding-top: 4px;
}
.exp-body h3 {
  font-family: var(--font-title);
  font-size: 20px;
  letter-spacing: 1px;
  color: var(--ink);
  margin-bottom: 6px;
}
.exp-role {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--eva-green);
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.exp-body p {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.75;
}

/* Clickable org name inside experience cards */
.exp-link {
  color: var(--eva-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .3s, text-shadow .3s;
}
.exp-link:hover {
  border-bottom-color: var(--eva-green);
  text-shadow: 0 0 10px rgba(0, 255, 65, 0.7);
}

@media (max-width: 720px) {
  .exp-card { grid-template-columns: 1fr; gap: 14px; padding: 24px; }
  .exp-year { font-size: 12px; }
}

/* ============================================================
   RESEARCH
   ============================================================ */
.research-quote {
  max-width: 680px;
  margin: 0 auto 100px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
  padding: 36px 24px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.research-quote::before,
.research-quote::after {
  content: '"';
  position: absolute;
  font-size: 48px;
  color: var(--eva-orange);
  font-family: var(--font-title);
  opacity: 0.5;
}
.research-quote::before { top: 10px; left: 16px; }
.research-quote::after { bottom: -12px; right: 16px; }

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.research-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 32px 28px;
  position: relative;
  transition: box-shadow .4s, border-color .4s;
}
.research-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 0 32px rgba(0, 255, 65, 0.2);
}
.rq-label {
  font-family: var(--font-pixel);
  font-size: 9px;
  color: var(--eva-orange);
  margin-bottom: 16px;
}
.research-card h3 {
  font-family: var(--font-title);
  font-size: 18px;
  letter-spacing: 2px;
  color: var(--eva-green);
  margin-bottom: 4px;
  text-shadow: 0 0 12px rgba(0, 255, 65, 0.4);
}
.rq-cn {
  font-size: 13px;
  color: var(--ink-dim);
  margin-bottom: 18px;
  letter-spacing: 2px;
}
.research-card p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}
.rq-keys {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--eva-cyan);
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  line-height: 1.8;
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto 60px;
}
.proj-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 28px 26px;
  text-decoration: none;
  color: var(--ink);
  transition: transform .4s, box-shadow .4s, border-color .4s;
  position: relative;
}
.proj-card:hover {
  transform: scale(1.02);
  border-color: var(--border-strong);
  box-shadow: 0 0 32px rgba(0, 255, 65, 0.22);
}
.proj-card.wip { opacity: 0.7; }
.proj-emoji {
  font-size: 28px;
  margin-bottom: 12px;
}
.proj-card h4 {
  font-family: var(--font-title);
  font-size: 15px;
  letter-spacing: 1px;
  color: var(--ink);
  margin-bottom: 10px;
}
.proj-card p {
  font-size: 13px;
  color: var(--ink-dim);
  margin-bottom: 16px;
  line-height: 1.6;
}
.awards {
  list-style: none;
  margin-bottom: 18px;
}
.awards li {
  font-size: 11px;
  color: var(--eva-yellow);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}
.proj-link {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--eva-green);
  letter-spacing: 1px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* PUB list */
.pub-list {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.pub {
  display: grid;
  grid-template-columns: 90px 1fr 200px;
  gap: 20px;
  align-items: center;
  padding: 20px 16px;
  border-bottom: 1px dashed var(--border);
  text-decoration: none;
  color: var(--ink);
  transition: background .3s, padding-left .3s;
}
.pub:hover {
  background: rgba(0, 255, 65, 0.04);
  padding-left: 24px;
}
.pub.static:hover {
  background: transparent;
  padding-left: 16px;
  cursor: default;
}
.pub-id {
  font-family: var(--font-pixel);
  font-size: 9px;
  color: var(--eva-orange);
}
.pub-title {
  font-size: 14px;
  line-height: 1.6;
}
.pub-title em {
  display: block;
  color: var(--ink-dim);
  font-size: 12px;
  font-style: normal;
}
.pub-src {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--eva-green);
  text-align: right;
  letter-spacing: 0.5px;
}

@media (max-width: 720px) {
  .pub {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .pub-src { text-align: left; }
}

/* ============================================================
   TIMELINE
   ============================================================ */
.tl {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tl-row {
  display: grid;
  grid-template-columns: 90px 60px 1fr;
  gap: 20px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(0, 255, 65, 0.1);
}
.tl-year {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--eva-orange);
  letter-spacing: 1px;
  padding-top: 4px;
}
.tl-line {
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--eva-green) 0 4px,
    transparent 4px 8px
  );
  margin-top: 14px;
  opacity: 0.6;
}
.tl-evt {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.7;
}

@media (max-width: 720px) {
  .tl-row { grid-template-columns: 60px 30px 1fr; gap: 12px; }
  .tl-year { font-size: 13px; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.foot {
  padding: 100px var(--pad-x) 80px;
  text-align: center;
}
.foot-panel {
  max-width: 700px;
  margin: 0 auto;
  border: 1px solid var(--border);
  padding: 48px 32px;
  background: var(--panel);
  position: relative;
}
.foot-panel::before,
.foot-panel::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  border: 2px solid var(--eva-orange);
}
.foot-panel::before { top: -3px; left: -3px; border-right: none; border-bottom: none; }
.foot-panel::after { bottom: -3px; right: -3px; border-left: none; border-top: none; }

.foot-status {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--eva-green);
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.foot-name {
  font-family: var(--font-title);
  font-size: 20px;
  letter-spacing: 2px;
  color: var(--ink);
  margin-bottom: 16px;
}
.foot-motto {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-dim);
  margin-bottom: 32px;
  line-height: 1.9;
}
.foot-motto em { color: var(--eva-orange); font-style: normal; }
.foot-links {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.foot-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--eva-green);
  text-decoration: none;
  letter-spacing: 1px;
  transition: text-shadow .3s;
}
.foot-links a:hover { text-shadow: 0 0 10px rgba(0, 255, 65, 0.8); }
.foot-copy {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-dim);
  line-height: 1.8;
  letter-spacing: 0.5px;
}

/* Selection */
::selection {
  background: rgba(0, 255, 65, 0.25);
  color: var(--ink);
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #07070c; }
::-webkit-scrollbar-thumb { background: rgba(0, 255, 65, 0.25); }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 255, 65, 0.5); }