/* ============================================================
   bkaratas.dev — programmer-identity portfolio
   sharp edges · mono typography · hairline borders
   ============================================================ */

:root {
  --bg: #0a0a0b;
  --bg-alt: #0c0c0e;
  --panel: #101013;
  --panel-2: #141418;
  --line: #232328;
  --line-2: #33333b;
  --text: #ececec;
  --muted: #9b9ba3;
  --dim: #6b6b74;
  --accent: #ffb000;
  --accent-dim: rgba(255, 176, 0, 0.14);
  --container: 1100px;
  --header-h: 60px;
  --sans: "Archivo", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* faint engineering grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 40%, transparent 85%);
}

main, .site-header, .site-footer { position: relative; z-index: 1; }

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

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

h1, h2, h3 {
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 0 0.4em;
  font-weight: 700;
}

p { margin: 0 0 1em; }

::selection { background: var(--accent); color: #0a0a0b; }

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

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--text);
  color: var(--bg);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 13px;
  z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: rgba(10, 10, 11, 0.88);
  backdrop-filter: saturate(150%) blur(10px);
  -webkit-backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--mono);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.brand-slash { color: var(--accent); font-weight: 700; }

.brand:hover .brand-name { color: var(--accent); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav > a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 8px 11px;
  border: 1px solid transparent;
  transition: color 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}

.site-nav > a i {
  font-style: normal;
  font-size: 10.5px;
  color: var(--dim);
}

.site-nav > a:hover {
  color: var(--text);
  border-color: var(--line-2);
  background: rgba(255, 255, 255, 0.03);
}
.site-nav > a:hover i { color: var(--accent); }

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line-2);
}

.header-controls {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.lang-switch button {
  font: inherit;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  padding: 6px 10px;
  border: 0;
  background: transparent;
  color: var(--dim);
  cursor: pointer;
  transition: color 0.12s ease, background 0.12s ease;
}

.lang-switch button + button { border-left: 1px solid var(--line-2); }

.lang-switch button:hover { color: var(--text); }

.lang-switch button.is-active {
  background: var(--accent);
  color: #0a0a0b;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  font: inherit;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 7px 13px;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.nav-toggle:hover { border-color: var(--accent); color: var(--accent); }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
}

#progress-bar {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- Hero ---------- */

.hero {
  min-height: 92svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 72px) 0 80px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

/* grid/flex children must be allowed to shrink below min-content,
   otherwise the code panel's `pre` lines widen the whole page */
.hero-grid > *,
.about-grid > *,
.project-row > *,
.skill-row > * { min-width: 0; }

.hero-cmd {
  font-family: var(--mono);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 22px;
}

.prompt { color: var(--accent); font-weight: 700; margin-right: 8px; }

.caret {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  margin-left: 6px;
  background: var(--accent);
  vertical-align: -0.16em;
  animation: blink 1.05s steps(1) infinite;
}

.caret-name {
  height: 0.78em;
  width: 0.4em;
  vertical-align: 0.02em;
}

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

.hero-name {
  font-size: clamp(2.4rem, 6.4vw, 4.1rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin-bottom: 0.3em;
}

.hero-role {
  font-family: var(--mono);
  font-size: clamp(0.9rem, 2vw, 1rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.3em;
}

.hero-role::before { content: "> "; color: var(--dim); }

.hero-tagline {
  max-width: 54ch;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.08rem);
}

.hero-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 0;
  margin: 26px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
}

.hero-meta li { display: inline-flex; align-items: center; gap: 8px; }

.hero-meta li + li::before {
  content: "/";
  color: var(--line-2);
  margin-right: 6px;
}

.meta-status { color: var(--muted); }

.dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
  animation: pulse 2.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

/* code panel */

.code-panel {
  border: 1px solid var(--line-2);
  background: var(--panel);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.35);
}

.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
  letter-spacing: 0.02em;
}

.code-path::before { content: "● "; color: var(--accent); font-size: 9px; vertical-align: 1px; }

.code-dots { display: inline-flex; gap: 5px; }
.code-dots i {
  width: 9px;
  height: 9px;
  border: 1px solid var(--line-2);
  display: block;
}

.code-body {
  counter-reset: line;
  padding: 16px 0;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.85;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}

.code-line {
  counter-increment: line;
  white-space: pre;
  padding: 0 18px 0 0;
  position: relative;
  padding-left: 56px;
  min-width: max-content;
}

.code-line::before {
  content: counter(line, decimal-leading-zero);
  position: absolute;
  left: 0;
  width: 40px;
  text-align: right;
  color: var(--dim);
  opacity: 0.65;
  font-size: 11.5px;
}

.kw  { color: var(--accent); font-weight: 700; }
.key { color: #cfd6e4; }
.str { color: var(--muted); }
.fn  { color: var(--accent); }
.com { color: var(--dim); font-style: italic; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 13px 24px;
  border: 1px solid transparent;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease, transform 0.12s ease;
}

.btn:hover { transform: translate(-2px, -2px); }
.btn:active { transform: none; }

.btn-primary {
  background: var(--text);
  color: #0a0a0b;
  font-weight: 700;
  box-shadow: 4px 4px 0 var(--line-2);
}
.btn-primary:hover {
  background: var(--accent);
  box-shadow: 6px 6px 0 rgba(255, 176, 0, 0.35);
}

.btn-ghost {
  border-color: var(--line-2);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Sections ---------- */

.section { padding: 96px 0; }

.section-alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--line);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 30px;
}

.sec-num {
  color: var(--accent);
  font-weight: 700;
}

.sec-num::after {
  content: "//";
  color: var(--line-2);
  margin-left: 10px;
}

.sec-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

.section h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.section-intro {
  color: var(--muted);
  max-width: 62ch;
  margin-bottom: 42px;
}

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 28px;
  align-items: start;
}

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
}

.panel-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
}

.panel-name { color: var(--text); }
.panel-name::before { content: "▸ "; color: var(--accent); }

.panel-body { padding: 28px 30px 8px; }
.panel-body h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
.panel-body p { color: var(--muted); max-width: 64ch; }
.panel-body p:last-child { margin-bottom: 18px; }

.facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
}
.facts li:last-child { border-bottom: 0; }

.fact-key {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}
.fact-key::before { content: "# "; color: var(--accent); }

.fact-value { font-size: 15.5px; }

/* ---------- Skills ---------- */

.skill-table { border-top: 1px solid var(--line); }

.skill-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 20px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.skill-key {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  padding-top: 7px;
}
.skill-key::before { content: "$ "; color: var(--accent); }

.chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.chips li {
  font-family: var(--mono);
  font-size: 13px;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  background: var(--panel);
  color: var(--text);
  transition: border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
}

.chips li:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.chips-sm li {
  font-size: 12px;
  padding: 5px 10px;
  color: var(--muted);
  background: transparent;
}

/* ---------- Projects ---------- */

.project-list { border-top: 1px solid var(--line); }

.project-row {
  display: grid;
  grid-template-columns: 56px 1fr 150px;
  gap: 24px;
  padding: 34px 16px;
  margin-inline: -16px;
  border-bottom: 1px solid var(--line);
  transition: background 0.15s ease;
}

.project-row:hover { background: rgba(255, 255, 255, 0.022); }

.pr-index {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--dim);
  padding-top: 6px;
}
.pr-index::after { content: " /"; color: var(--line-2); }

.pr-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}

.pr-domain {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
  border-bottom: 1px solid transparent;
}
.pr-domain:hover { border-bottom-color: var(--accent); }

.pr-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line-2);
  padding: 3px 8px;
}
.pr-status i {
  width: 6px;
  height: 6px;
  background: var(--accent);
  display: block;
  animation: pulse 2.2s ease-in-out infinite;
}

.project-row h3 { font-size: clamp(1.4rem, 3vw, 1.85rem); margin-bottom: 0.35em; }

.project-row p {
  color: var(--muted);
  font-size: 15.5px;
  max-width: 68ch;
  margin-bottom: 16px;
}

.pr-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  font-family: var(--mono);
  padding-top: 4px;
}

.pr-year { font-size: 12.5px; color: var(--dim); letter-spacing: 0.08em; }

.pr-link {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  border: 1px solid var(--line-2);
  padding: 8px 12px;
  transition: border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
}

.pr-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.pr-arrow { display: inline-block; transition: transform 0.12s ease; }
.pr-link:hover .pr-arrow { transform: translate(2px, -2px); }

/* ---------- Contact ---------- */

.env-list {
  border: 1px solid var(--line);
  background: var(--panel);
  max-width: 720px;
}

.env-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  transition: background 0.12s ease;
}
.env-row:last-child { border-bottom: 0; }

.env-row:hover { background: rgba(255, 255, 255, 0.03); }
.env-row:hover .env-val { color: var(--accent); }

.env-key {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--dim);
  white-space: nowrap;
}
.env-key::after { content: "="; color: var(--line-2); margin-left: 8px; }

.env-lead {
  flex: 1;
  height: 0;
  border-bottom: 1px dotted var(--line-2);
  transform: translateY(-4px);
}

.env-val {
  font-family: var(--mono);
  font-size: 14.5px;
  color: var(--text);
  word-break: break-all;
  text-align: right;
  transition: color 0.12s ease;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 30px 0;
  background: var(--bg);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.site-footer p {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--dim);
  letter-spacing: 0.03em;
}

.footer-path { color: var(--line-2); }
.footer-path::before { content: "~/"; color: var(--accent); }

/* ---------- Reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .caret, .dot, .pr-status i { animation: none; }
  .btn:hover, .contact-item:hover { transform: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 980px) {
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .section { padding: 72px 0; }

  .skill-row { grid-template-columns: 1fr; gap: 12px; padding: 16px 0; }
  .skill-key { padding-top: 0; }

  .project-row {
    grid-template-columns: 34px 1fr;
    gap: 16px;
    padding: 28px 12px;
    margin-inline: -12px;
  }

  .pr-side {
    grid-column: 2;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding-top: 0;
  }
}

@media (max-width: 760px) {
  .site-header { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(10, 10, 11, 0.98); }

  .nav-toggle { display: inline-block; }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0;
    background: #0a0a0b;
    border-bottom: 1px solid var(--line);
    display: none;
    max-height: calc(100svh - var(--header-h));
    overflow-y: auto;
  }

  .site-nav.is-open { display: flex; }

  .site-nav > a {
    padding: 15px 24px;
    font-size: 14px;
    border-bottom: 1px solid var(--line);
    border-left: 2px solid transparent;
  }
  .site-nav > a:hover,
  .site-nav > a:focus { border-left-color: var(--accent); background: transparent; }

  .header-inner { gap: 8px; }
  .brand { font-size: 13px; }
  .lang-switch button { padding: 6px 9px; }

  .section { padding: 64px 0; }

  .hero {
    min-height: auto;
    padding: calc(var(--header-h) + 44px) 0 56px;
  }

  .hero-grid { gap: 40px; }

  .hero-name { font-size: clamp(1.95rem, 9vw, 2.6rem); }
  .hero-cmd { margin-bottom: 16px; }
  .hero-role { letter-spacing: 0.12em; }

  .hero-actions { margin-top: 28px; gap: 10px; }
  .hero-actions .btn { flex: 1 1 100%; justify-content: center; }

  .hero-meta { gap: 10px; row-gap: 8px; font-size: 11.5px; }

  /* comfortable touch targets (>= 40px) */
  .nav-toggle { padding: 10px 15px; }
  .lang-switch button { padding: 10px 13px; font-size: 12px; }
  .pr-link { padding: 11px 14px; }

  .code-panel { box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35); }
  .code-body { font-size: 11.5px; line-height: 1.8; padding: 12px 0; }
  .code-line { padding-left: 44px; padding-right: 14px; }
  .code-line::before { width: 30px; font-size: 10.5px; }
  .code-bar { font-size: 11px; padding: 9px 12px; }

  .section-label { gap: 10px; font-size: 11.5px; margin-bottom: 22px; }
  .section-intro { margin-bottom: 30px; }

  .panel-body { padding: 20px 18px 6px; }
  .panel-bar { padding: 8px 12px; font-size: 11px; }

  .facts li { padding: 13px 16px; }

  .chips { gap: 6px; }
  .chips li { font-size: 12.5px; padding: 5px 11px; }

  .project-row { padding: 24px 0; margin-inline: 0; }
  .project-row h3 { font-size: 1.35rem; }
  .project-row p { font-size: 14.5px; }
  .pr-side { padding-top: 4px; }

  .env-row { flex-direction: column; align-items: flex-start; gap: 4px; padding: 14px 16px; }
  .env-lead { display: none; }
  .env-val { text-align: left; width: 100%; font-size: 13.5px; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 400px) {
  .hero-name { font-size: 1.85rem; }
  .code-body { font-size: 11px; }
  .code-line { padding-left: 38px; }
  .code-line::before { width: 26px; }
  /* keep the header uncluttered on very small phones — show only the `//` mark */
  .brand-name { display: none; }
}