/* === Portfolio: Olcay Koyutürk === */

:root {
  --bg: #05070d;
  --bg-elev: #0a0e1a;
  --bg-elev-2: #0f1424;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #e6ecf5;
  --text-dim: #8892a6;
  --text-faint: #4a5468;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --accent-glow: rgba(59, 130, 246, 0.45);
  --warn: #ff5577;

  --font-sans: "Space Grotesk", "Helvetica Neue", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;

  --max-w: 1280px;
  --pad-x: clamp(24px, 5vw, 80px);
}

[data-theme="light"] {
  --bg: #f6f4ef;
  --bg-elev: #ffffff;
  --bg-elev-2: #efece5;
  --line: rgba(0, 0, 0, 0.1);
  --line-strong: rgba(0, 0, 0, 0.22);
  --text: #14171f;
  --text-dim: #4e576b;
  --text-faint: #98a0b3;
  --accent: #7c5cff;
  --accent-soft: rgba(124, 92, 255, 0.1);
  --accent-glow: rgba(124, 92, 255, 0.35);
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  cursor: none;
}
@media (pointer: coarse) { body { cursor: auto; } }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: none; }
@media (pointer: coarse) { button { cursor: pointer; } }

/* ===== Background canvas (wave/particles) ===== */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.7;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(circle at 50% 30%, black, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black, transparent 75%);
  opacity: 0.5;
}

.bg-noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='0.9' /></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
}

/* ===== Custom cursor ===== */
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 1000;
  transform: translate3d(-100px, -100px, 0);
  will-change: transform;
  mix-blend-mode: difference;
}
.cursor-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.cursor-ring {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  transition: width 0.25s, height 0.25s, border-color 0.25s, background 0.25s;
}
.cursor-ring.hot {
  width: 60px; height: 60px;
  background: var(--accent-soft);
  border-color: var(--accent);
}
@media (pointer: coarse) { .cursor-dot, .cursor-ring { display: none; } }

/* ===== App root / scaffold ===== */
.app {
  position: relative;
  z-index: 2;
  min-height: 100vh;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* ===== Top nav ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 20px var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 65%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--line); }

.nav-brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}
.brand-mark {
  width: 28px; height: 28px;
  border: 1px solid var(--accent);
  display: grid; place-items: center;
  position: relative;
  color: var(--accent);
}
.brand-mark::before {
  content: "";
  position: absolute; inset: 4px;
  border: 1px solid var(--accent);
  opacity: 0.5;
}
.brand-mark span { font-weight: 700; font-size: 11px; }

.nav-links {
  display: flex; gap: 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.nav-links a {
  color: var(--text-dim);
  position: relative;
  transition: color 0.25s;
}
.nav-links a::before {
  content: counter(navi, decimal-leading-zero) " ";
  color: var(--text-faint);
  font-size: 10px;
  margin-right: 6px;
}
.nav-links { counter-reset: navi; }
.nav-links a { counter-increment: navi; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px; background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}
@media (max-width: 860px) {
  .nav-links { display: none; }
}

.nav-tools {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.lang-toggle {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0;
  background: transparent;
  cursor: none;
  transition: border-color 0.25s;
}
@media (pointer: coarse) { .lang-toggle { cursor: pointer; } }
.lang-toggle:hover { border-color: var(--accent); }

.lang-toggle-track {
  position: relative;
  display: flex;
  align-items: center;
  padding: 3px;
  width: 76px;
  height: 28px;
}
.lang-toggle-label {
  flex: 1;
  z-index: 2;
  position: relative;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-align: center;
  color: var(--text-dim);
  transition: color 0.25s;
  line-height: 1;
}
.lang-toggle[data-lang="tr"] .lang-toggle-label.tr,
.lang-toggle[data-lang="en"] .lang-toggle-label.en {
  color: #001018;
}
.lang-toggle-thumb {
  position: absolute;
  z-index: 1;
  top: 3px;
  left: 3px;
  width: calc(50% - 3px);
  height: calc(100% - 6px);
  background: var(--accent);
  border-radius: 999px;
  box-shadow: 0 0 12px var(--accent-glow);
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}
.lang-toggle[data-lang="en"] .lang-toggle-thumb {
  transform: translateX(100%);
}

.tweaks-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--text-dim);
  cursor: none;
  transition: border-color 0.25s, color 0.25s;
}
@media (pointer: coarse) { .tweaks-trigger { cursor: pointer; } }
.tweaks-trigger:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Side slider menu (with kebab trigger on the left) ===== */
.nav-left {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-kebab {
  width: 30px; height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 0;
  background: transparent;
  cursor: none;
  transition: border-color 0.25s, background 0.25s;
}
@media (pointer: coarse) { .nav-kebab { cursor: pointer; } }
.nav-kebab:hover { border-color: var(--accent); }
.nav-kebab.open { border-color: var(--accent); background: var(--accent-soft); }
.nav-kebab span {
  display: block;
  width: 3px;
  height: 3px;
  background: var(--text);
  border-radius: 50%;
  transition: transform 0.3s, background 0.3s;
}
.nav-kebab.open span { background: var(--accent); }
.nav-kebab.open span:nth-child(1) { transform: translateY(6px); }
.nav-kebab.open span:nth-child(3) { transform: translateY(-6px); }

.side-menu-veil {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--bg) 65%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s;
}
.side-menu-veil.open { opacity: 1; pointer-events: auto; }

.side-menu {
  position: fixed;
  top: 0; bottom: 0; left: 0;
  width: min(420px, 86vw);
  z-index: 61;
  background: var(--bg-elev);
  border-right: 1px solid var(--line-strong);
  box-shadow: 24px 0 60px -20px rgba(0, 0, 0, 0.6);
  transform: translateX(-100%);
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
}
.side-menu.open { transform: translateX(0); }

.side-menu-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px 24px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}
.side-menu-close {
  margin-left: auto;
  width: 32px; height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  line-height: 1;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: none;
  transition: all 0.25s;
}
@media (pointer: coarse) { .side-menu-close { cursor: pointer; } }
.side-menu-close:hover { color: var(--accent); border-color: var(--accent); }

.side-menu-list {
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  overflow-y: auto;
  flex: 1;
}
.sm-link {
  display: grid;
  grid-template-columns: 44px 1fr 24px;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text);
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), color 0.25s, background 0.25s;
}
.side-menu.open .sm-link {
  opacity: 1;
  transform: translateX(0);
}
.sm-link:hover { color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.sm-link.active { color: var(--accent); }
.sm-link.active .sm-num { color: var(--accent); }
.sm-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-faint);
}
.sm-arrow {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--text-faint);
  transition: color 0.25s, transform 0.25s;
}
.sm-link:hover .sm-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

.side-menu-foot {
  padding: 20px 24px 4px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  text-align: center;
}

/* ===== Sections ===== */
section {
  position: relative;
  padding: 70px 0 70px;
  scroll-margin-top: 96px;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 36px;
}
.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  padding-bottom: 10px;
}

/* ===== Reveal animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }
.reveal[data-delay="6"] { transition-delay: 0.48s; }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  padding: 140px 0 80px;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 64px;
  align-items: end;
}
@media (max-width: 860px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    justify-items: center;
  }
  .hero-inner > div:first-child {
    width: 100%;
    max-width: 560px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .hero-meta { justify-content: center; }
  .hero-name { align-items: center; }
  .hn-line { justify-content: center; }
  .hero-role { justify-content: center; }
  .hero-tagline { max-width: 100%; }
  .hero-aside {
    width: 100%;
    max-width: 260px;
    align-self: center;
    align-items: stretch;
  }
}

.hero-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Scroll hint repositioned */
.hero .scroll-hint {
  left: var(--pad-x);
  bottom: 80px;
  z-index: 3;
}

@media (max-width: 860px) {
  .hero .scroll-hint { display: none; }
  .hero-inner {
    padding-top: 110px;
    padding-bottom: 80px;
  }
}

/* ===== Portrait frame ===== */
.portrait-frame {
  position: relative;
  width: 100%;
  padding: 14px;
  background:
    linear-gradient(160deg,
      color-mix(in srgb, var(--accent) 18%, transparent),
      color-mix(in srgb, var(--bg-elev) 80%, transparent) 40%,
      color-mix(in srgb, var(--bg-elev) 70%, transparent));
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow:
    0 0 40px -10px var(--accent-glow),
    inset 0 0 0 1px var(--line);
}
.portrait-inner {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--bg-elev-2);
}
.portrait-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 22%;
  filter:
    contrast(1.08)
    saturate(0.7)
    brightness(0.96);
  transition: filter 0.6s, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.portrait-frame:hover .portrait-inner img {
  filter: contrast(1.08) saturate(1) brightness(1.02);
  transform: scale(1.03);
}
.portrait-inner::after {
  /* accent tint */
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--accent) 14%, transparent) 0%,
    transparent 35%,
    color-mix(in srgb, var(--bg) 70%, transparent) 100%);
  mix-blend-mode: multiply;
  pointer-events: none;
  transition: opacity 0.5s;
}
.portrait-frame:hover .portrait-inner::after { opacity: 0.5; }

.portrait-scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    transparent 0,
    transparent 3px,
    rgba(0, 0, 0, 0.18) 3px,
    rgba(0, 0, 0, 0.18) 4px
  );
  mix-blend-mode: multiply;
  opacity: 0.35;
}
.portrait-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.4;
  mask-image: linear-gradient(180deg, black, transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, black, transparent 70%);
}

.pf-corner {
  position: absolute;
  width: 16px; height: 16px;
  border: 1px solid var(--accent);
  pointer-events: none;
}
.pf-corner.tl { top: 4px; left: 4px; border-right: none; border-bottom: none; }
.pf-corner.tr { top: 4px; right: 4px; border-left: none; border-bottom: none; }
.pf-corner.bl { bottom: 4px; left: 4px; border-right: none; border-top: none; }
.pf-corner.br { bottom: 4px; right: 4px; border-left: none; border-top: none; }

.portrait-meta {
  position: absolute;
  left: 18px; right: 18px;
  bottom: 22px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent-glow);
  pointer-events: none;
}

.hero-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}
.hero-meta .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #00ff88;
  box-shadow: 0 0 12px #00ff88;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-name {
  font-size: clamp(56px, 10vw, 156px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.02;
  padding-bottom: 0.06em;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.hn-line {
  display: flex;
  flex-wrap: nowrap;
  line-height: 1.02;
}
.hn-char {
  display: inline-block;
  background: linear-gradient(180deg, var(--text) 0%, color-mix(in srgb, var(--text) 70%, transparent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  transform: translateY(0.5em) rotateX(-25deg);
  animation: hn-in 0.95s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  transform-origin: 50% 100%;
  will-change: transform, opacity;
  transition: transform 0.3s ease, color 0.3s ease;
}
.hn-char:hover {
  transform: translateY(-6px);
}
@keyframes hn-in {
  to { opacity: 1; transform: translateY(0) rotateX(0); }
}

.hero-role {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-role::before {
  content: "";
  width: 32px; height: 1px;
  background: var(--accent);
}

.hero-tagline {
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--text-dim);
  font-weight: 400;
  max-width: 640px;
  letter-spacing: -0.005em;
  margin-bottom: 48px;
  min-height: 2.4em;
}
.hero-tagline .typed {
  color: var(--text);
  border-right: 2px solid var(--accent);
  animation: blink 1s steps(1) infinite;
  padding-right: 2px;
}
@keyframes blink {
  50% { border-color: transparent; }
}

.hero-stats {
  display: flex;
  flex-direction: column;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 60%, transparent);
  backdrop-filter: blur(6px);
}
.hero-stat-row {
  display: flex; justify-content: space-between; gap: 12px;
}
.hero-stat-row .k { color: var(--text-faint); }
.hero-stat-row .v { color: var(--text); }
.hero-stat-row .v a:hover { color: var(--accent); }

.scroll-hint {
  position: absolute;
  left: var(--pad-x);
  bottom: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-faint);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}
.scroll-hint .line {
  display: inline-block;
  width: 1px; height: 36px;
  background: var(--text-faint);
  position: relative; overflow: hidden;
}
.scroll-hint .line::before {
  content: ""; position: absolute;
  top: -16px; left: 0; right: 0; height: 16px;
  background: var(--accent);
  animation: scrolldown 1.8s ease-in-out infinite;
}
@keyframes scrolldown {
  0% { top: -16px; }
  100% { top: 36px; }
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
}
.about-body p {
  font-size: 19px;
  color: var(--text);
  line-height: 1.7;
  text-wrap: pretty;
}
.about-side {
  display: flex; flex-direction: column; gap: 40px;
}
.skills-block h4, .languages-block h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.skills-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.skill-tag {
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  border-radius: 999px;
  transition: all 0.25s;
}
.skill-tag.domain {
  border-color: var(--accent);
  color: var(--accent);
}
.skill-tag:hover {
  background: var(--accent);
  color: #001018;
  border-color: var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
}

.lang-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
}
.lang-row .lname { color: var(--text); }
.lang-row .lvl { color: var(--text-dim); }
.lang-bar {
  grid-column: 1 / -1;
  height: 2px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}
.lang-bar > i {
  position: absolute;
  inset: 0 100% 0 0;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  transition: right 1.4s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== Experience ===== */
.exp-list {
  display: flex; flex-direction: column;
}
.exp-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
  position: relative;
}
.exp-row:last-child { border-bottom: 1px solid var(--line); }
.exp-row::before {
  content: "";
  position: absolute;
  top: 32px;
  left: -20px;
  width: 10px; height: 10px;
  border: 1px solid var(--accent);
  background: var(--bg);
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity 0.3s;
}
.exp-row:hover::before { opacity: 1; }

.exp-period {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.exp-company {
  font-size: 24px;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.exp-role {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 16px;
}
.exp-bullets {
  list-style: none;
  display: flex; flex-direction: column; gap: 8px;
  margin-top: 16px;
}
.exp-bullets li {
  padding-left: 20px;
  position: relative;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.6;
}
.exp-bullets li::before {
  content: "▸";
  position: absolute; left: 0;
  color: var(--accent);
}
.exp-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 16px;
}
.exp-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  padding: 3px 8px;
  border: 1px solid var(--line);
}

@media (max-width: 700px) {
  .exp-row { grid-template-columns: 1fr; gap: 12px; }
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
@media (max-width: 860px) {
  .projects-grid { grid-template-columns: 1fr; }
}

.project-card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  padding: 32px;
  cursor: none;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.3s, background 0.3s;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}
@media (pointer: coarse) { .project-card { cursor: pointer; } }
.project-card:hover {
  border-color: var(--accent);
  background: var(--bg-elev-2);
  transform: translateY(-2px);
}
.project-card::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle at top right, var(--accent-soft), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}
.project-card:hover::after { opacity: 1; }

.project-card.featured {
  grid-column: 1 / -1;
  min-height: 360px;
  border-color: var(--line-strong);
}
.project-card.featured::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, var(--accent-soft), transparent 50%);
  pointer-events: none;
}

.project-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 16px;
}
.project-year {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}
.project-featured-flag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid var(--accent);
}
.project-flags {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.project-store-flag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #001018;
  background: var(--accent);
  border: 1px solid var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
  position: relative;
  overflow: hidden;
}
.project-store-flag::after {
  /* shimmer sweep */
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,0.4) 50%, transparent 70%);
  transform: translateX(-100%);
  animation: shimmer 3.4s linear infinite;
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(100%); }
}
.project-store-flag svg { flex: none; }

.project-title {
  font-size: clamp(22px, 2.2vw, 28px);
  letter-spacing: -0.01em;
  font-weight: 500;
  margin: 16px 0 12px;
  text-wrap: balance;
}
.project-card.featured .project-title {
  font-size: clamp(28px, 3.4vw, 44px);
}
.project-short {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.6;
  flex: 1;
}
.project-footer {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px;
}
.project-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.ptag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ptag::after { content: " /"; color: var(--text-faint); }
.ptag:last-child::after { content: ""; }
.project-arrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  display: flex; align-items: center; gap: 8px;
  transition: color 0.3s, transform 0.3s;
}
.project-card:hover .project-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* ===== More projects card ===== */
.more-card {
  background:
    repeating-linear-gradient(
      45deg,
      transparent 0,
      transparent 12px,
      color-mix(in srgb, var(--accent) 5%, transparent) 12px,
      color-mix(in srgb, var(--accent) 5%, transparent) 13px
    ),
    var(--bg-elev);
  border: 1px dashed var(--line-strong);
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  text-decoration: none;
  color: inherit;
  padding: 0;
  cursor: none;
}
@media (pointer: coarse) { .more-card { cursor: pointer; } }

.more-card::after { display: none; }

.more-card:hover {
  border-color: var(--accent);
  border-style: solid;
  background:
    radial-gradient(circle at 70% 30%, var(--accent-soft), transparent 60%),
    var(--bg-elev-2);
}

.more-corner {
  position: absolute;
  width: 14px; height: 14px;
  border: 1px solid var(--accent);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.more-card:hover .more-corner { opacity: 1; }
.more-corner.tl { top: 12px; left: 12px; border-right: none; border-bottom: none; }
.more-corner.tr { top: 12px; right: 12px; border-left: none; border-bottom: none; }
.more-corner.bl { bottom: 12px; left: 12px; border-right: none; border-top: none; }
.more-corner.br { bottom: 12px; right: 12px; border-left: none; border-top: none; }

.more-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  padding: 32px;
  color: var(--text);
}
.more-glyph {
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 16px;
}
.more-glyph svg {
  filter: drop-shadow(0 0 14px var(--accent-glow));
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.more-card:hover .more-glyph svg { transform: rotate(45deg); }

.more-text { display: flex; flex-direction: column; gap: 10px; }
.more-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
}
.more-title {
  font-size: clamp(22px, 2.2vw, 28px);
  letter-spacing: -0.01em;
  font-weight: 500;
  text-wrap: balance;
}
.more-sub {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.5;
}

.more-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  transition: color 0.3s;
}
.more-card:hover .more-footer { color: var(--accent); }
.more-arrow {
  font-size: 14px;
  transition: transform 0.3s;
}
.more-card:hover .more-arrow { transform: translateX(6px); }

/* ===== Writings page hero ===== */
.writings-hero {
  padding: 200px 0 80px;
  position: relative;
}
.writings-hero-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 28px;
}
.writings-hero-meta .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #00ff88;
  box-shadow: 0 0 12px #00ff88;
  animation: pulse 2s infinite;
}
.writings-hero-meta a:hover { color: var(--accent) !important; }

.writings-hero-title {
  font-size: clamp(56px, 9vw, 140px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.15;
  padding-bottom: 0.12em;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: nowrap;
  align-items: baseline;
  gap: 0;
}
.wht-char {
  display: inline-block;
  background: linear-gradient(180deg, var(--text) 0%, color-mix(in srgb, var(--text) 60%, transparent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  transform: translateY(0.4em) rotateX(-30deg);
  animation: wht-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  transform-origin: 50% 100%;
  will-change: transform, opacity;
}
.wht-char:hover {
  animation: wht-bob 0.6s ease;
}
@keyframes wht-in {
  to { opacity: 1; transform: translateY(0) rotateX(0); }
}
@keyframes wht-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.wht-cursor {
  display: inline-block;
  width: 0.06em;
  height: 0.85em;
  background: var(--accent);
  margin-left: 0.08em;
  align-self: center;
  box-shadow: 0 0 12px var(--accent-glow);
  animation: wht-blink 1.1s steps(1) infinite, wht-cursor-in 0.4s ease forwards;
  opacity: 0;
}
@keyframes wht-cursor-in {
  to { opacity: 1; }
}
@keyframes wht-blink {
  50% { opacity: 0.2; }
}
.writings-hero-lede {
  font-size: clamp(18px, 1.8vw, 22px);
  color: var(--text-dim);
  max-width: 640px;
  text-wrap: balance;
}

/* ===== Blog list ===== */
.blog-list {
  display: flex;
  flex-direction: column;
}
.blog-row {
  display: grid;
  grid-template-columns: 140px 1fr 28px;
  gap: 32px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  align-items: start;
  cursor: none;
  transition: background 0.3s;
  position: relative;
}
.blog-row:last-child { border-bottom: 1px solid var(--line); }
@media (pointer: coarse) { .blog-row { cursor: pointer; } }
.blog-row:hover { background: color-mix(in srgb, var(--accent) 4%, transparent); }
.blog-row::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 32px;
  width: 8px; height: 8px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  opacity: 0;
  transition: opacity 0.3s;
}
.blog-row:hover::before { opacity: 1; }

.blog-row-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  padding-top: 6px;
}
.blog-row-title {
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
  text-wrap: balance;
  transition: color 0.3s;
}
.blog-row:hover .blog-row-title { color: var(--accent); }
.blog-row-excerpt {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.55;
  margin-bottom: 14px;
  text-wrap: pretty;
}
.blog-row-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.blog-row-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.blog-row-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.blog-row-arrow {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--text-faint);
  padding-top: 4px;
  transition: color 0.3s, transform 0.3s;
}
.blog-row:hover .blog-row-arrow {
  color: var(--accent);
  transform: translateX(4px);
}
@media (max-width: 700px) {
  .blog-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .blog-row-arrow { display: none; }
}

/* ===== Responsive: phones / smaller screens ===== */
@media (max-width: 700px) {
  section {
    padding: 40px 0 40px;
  }
  .nav { padding: 14px var(--pad-x); }
  .nav-brand { font-size: 12px; gap: 8px; }
  .nav-brand .brand-mark { width: 24px; height: 24px; }
  .nav-brand .brand-mark span { font-size: 10px; }

  .hero { padding: 110px 0 60px; min-height: auto; }
  .hero-name { line-height: 1.05; }
  .hn-char { font-size: inherit; }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 40px;
    padding-bottom: 24px;
  }
  .section-title { font-size: clamp(32px, 9vw, 48px); }

  /* Modal */
  .modal { padding: 32px 24px; max-height: 92vh; }
  .modal-title { font-size: 28px; }

  /* Contact CTA stacks */
  .contact-row { grid-template-columns: 60px 1fr; gap: 12px; font-size: 12px; }
  .contact-lead { font-size: clamp(28px, 8vw, 40px); }
}

@media (max-width: 480px) {
  :root { --pad-x: 20px; }
  .hero-name { font-size: clamp(46px, 13vw, 72px); }
  .writings-hero-title { font-size: clamp(44px, 13vw, 72px); }
  .hero-tagline { font-size: 16px; }
  .blog-row { padding: 22px 0; }
  .blog-row-title { font-size: 20px; }
  .project-card { padding: 24px; min-height: 220px; }
  .project-card.featured { min-height: 280px; }
  .nav-links { display: none; }
}

/* ===== Project Modal ===== */
.modal-veil {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: grid;
  place-items: center;
  padding: 40px var(--pad-x);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.modal-veil.open {
  opacity: 1;
  pointer-events: auto;
}
.modal {
  width: 100%;
  max-width: 880px;
  max-height: 90vh;
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  padding: 56px;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px) scale(0.98);
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.modal-veil.open .modal { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute; top: 24px; right: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  transition: all 0.25s;
}
.modal-close:hover { color: var(--accent); border-color: var(--accent); }
.modal-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.modal-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
  text-wrap: balance;
}
.modal-block { margin-bottom: 32px; }
.modal-block h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.modal-block p {
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 12px;
  text-wrap: pretty;
}
.modal-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
}

/* ===== Education / Certificates ===== */
.edu-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.edu-row:last-child { border-bottom: 1px solid var(--line); }
.edu-period { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }
.edu-school { font-size: 22px; margin-bottom: 6px; letter-spacing: -0.01em; }
.edu-degree { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.cert-card {
  border: 1px solid var(--line);
  padding: 24px;
  background: var(--bg-elev);
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}
.cert-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.cert-title {
  font-size: 16px;
  margin-bottom: 12px;
  letter-spacing: -0.005em;
  text-wrap: balance;
}
.cert-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  display: flex; flex-direction: column; gap: 4px;
}
.cert-meta .code { color: var(--text-faint); font-size: 10px; word-break: break-all; }

/* ===== Contact ===== */
.contact-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
@media (max-width: 860px) {
  .contact-block { grid-template-columns: 1fr; gap: 40px; }
}
.contact-lead {
  font-size: clamp(36px, 4.8vw, 64px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  text-wrap: balance;
}
.contact-cta-row {
  margin-top: 32px;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 28px;
  border: 1px solid var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  position: relative;
  overflow: hidden;
  transition: color 0.3s;
}
.cta-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.cta-btn:hover { color: #001018; }
.cta-btn:hover::before { transform: translateX(0); }
.cta-btn > span { position: relative; z-index: 1; }
.cta-btn .arrow { font-weight: 700; }

.contact-list {
  display: flex; flex-direction: column; gap: 20px;
}
.contact-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 14px;
}
.contact-row .ck {
  color: var(--text-faint);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.contact-row .cv { color: var(--text); transition: color 0.25s; }
.contact-row:hover .cv { color: var(--accent); }
.contact-availability {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.contact-availability .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #00ff88; box-shadow: 0 0 12px #00ff88;
  animation: pulse 2s infinite;
}

/* ===== Footer ===== */
.footer {
  padding: 40px var(--pad-x);
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
@media (max-width: 600px) {
  .footer { flex-direction: column; gap: 12px; }
}