/* ── Design System ── */
:root {
  --bg: #0B0F14;
  --bg-elevated: #111820;
  --bg-subtle: #161D27;
  --text: #C9D1D9;
  --text-muted: #8B949E;

  /* Cyber palette */
  --cyan: #00E5FF;
  --red: #FF2D55;
  --yellow: #FFD60A;
  --highlight: #67D117;

  --accent: var(--cyan);
  --accent-muted: rgba(0, 229, 255, 0.12);
  --accent-complement: var(--red);
  --accent-detail: var(--yellow);
  --accent-highlight: var(--highlight);

  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 229, 255, 0.4);
  --max-width: 1100px;
  --header-height: 64px;
  --radius: 0;
  --border-weight: 2px;
  --corner-size: 10px;
  --brutal-offset: 4px;
  --transition: 120ms ease;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --font-display: "Orbitron", var(--font-sans);
  --font-cyber: "Rajdhani", var(--font-sans);
  --code-keyword: #79C0FF;
  --code-string: #67D117;
  --code-fn: #D2A8FF;
  --code-comment: #6E7681;
  --code-dec: #FFD60A;
  --code-num: #FFD60A;
}

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  position: relative;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.028) 1px, transparent 1px),
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 229, 255, 0.04), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(0, 229, 255, 0.02), transparent);
  background-size: 44px 44px, 44px 44px, auto, auto;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0, 0, 0, 0.09) 3px,
    rgba(0, 0, 0, 0.09) 4px
  );
  opacity: 0.35;
}

/* ── Brutalist corner brackets (shared) ── */
.brutal-corners,
.project-card,
.contact-card,
.code-terminal,
.code-snippet,
.skills__panel,
.linux-panel {
  position: relative;
}

.brutal-corners::before,
.brutal-corners::after,
.project-card::before,
.project-card::after,
.contact-card::before,
.contact-card::after,
.code-terminal::before,
.code-terminal::after,
.code-snippet::before,
.code-snippet::after,
.skills__panel::before,
.skills__panel::after,
.linux-panel::before,
.linux-panel::after {
  content: "";
  position: absolute;
  width: var(--corner-size);
  height: var(--corner-size);
  pointer-events: none;
  z-index: 2;
}

.brutal-corners::before,
.project-card::before,
.contact-card::before,
.code-terminal::before,
.code-snippet::before,
.skills__panel::before,
.linux-panel::before {
  top: -1px;
  left: -1px;
  border-top: var(--border-weight) solid var(--accent);
  border-left: var(--border-weight) solid var(--accent);
}

.brutal-corners::after,
.project-card::after,
.contact-card::after,
.code-terminal::after,
.code-snippet::after,
.skills__panel::after,
.linux-panel::after {
  bottom: -1px;
  right: -1px;
  border-bottom: var(--border-weight) solid var(--accent);
  border-right: var(--border-weight) solid var(--accent);
}

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

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

ul {
  list-style: none;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2rem);
}

.section {
  padding-block: clamp(4rem, 10vw, 6rem);
}

.section__title {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-cyber);
  font-size: clamp(0.875rem, 2vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
  padding: 0.35rem 0.75rem 0.35rem 0;
  border-left: 3px solid var(--accent);
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.06), transparent 70%);
}

.section__title::before {
  content: "//";
  color: var(--accent-detail);
  font-weight: 600;
  letter-spacing: 0;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--bg);
  border-bottom: var(--border-weight) solid var(--border);
  box-shadow: 0 var(--border-weight) 0 rgba(0, 229, 255, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 900;
  letter-spacing: 0.24em;
  color: var(--text);
  padding-left: 0.625rem;
  border-left: 3px solid var(--accent);
  transition: color var(--transition), border-color var(--transition);
}

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

.header__nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.header__link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}

.header__link:hover,
.header__link:focus-visible {
  color: var(--accent-complement);
  text-decoration: underline;
  text-decoration-color: var(--accent-complement);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  background: var(--bg-elevated);
  border: var(--border-weight) solid var(--border);
  cursor: pointer;
}

.header__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Syntax tokens ── */
.tok-keyword { color: var(--code-keyword); }
.tok-string { color: var(--code-string); }
.tok-fn { color: var(--code-fn); }
.tok-comment { color: var(--code-comment); }
.tok-dec { color: var(--code-dec); }
.tok-num { color: var(--code-num); }

/* ── Code cursor ── */
.code-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: cursorBlink 1s step-end infinite;
}

.code-cursor--terminal {
  width: 0.5em;
  height: 0.9em;
}

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

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.65s ease,
    transform 0.65s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Hero ── */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100dvh - var(--header-height));
  padding-block: 4rem;
  text-align: center;
  overflow: hidden;
}

.hero__code-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.35), transparent 85%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.35), transparent 85%);
}

.hero__linux-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), transparent 80%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), transparent 80%);
}

.hero__linux-scroll {
  position: absolute;
  top: 15%;
  left: -5%;
  width: min(380px, 50vw);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.75;
  text-align: left;
  color: var(--text-muted);
  opacity: 0.14;
  animation: linuxDrift 32s linear infinite;
}

.hero__linux-scroll code {
  display: block;
  white-space: pre;
}

@keyframes linuxDrift {
  0% { transform: translateY(-20%); }
  100% { transform: translateY(20%); }
}

.hero__code-scroll {
  position: absolute;
  top: 10%;
  right: -5%;
  width: min(420px, 55vw);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.75;
  text-align: left;
  color: var(--text-muted);
  opacity: 0.18;
  animation: codeDrift 28s linear infinite;
}

.hero__code-scroll code {
  display: block;
  white-space: pre;
}

@keyframes codeDrift {
  0% { transform: translateY(0); }
  100% { transform: translateY(-40%); }
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  width: 100%;
}

@media (min-width: 900px) {
  .hero__layout {
    grid-template-columns: 1fr minmax(280px, 360px);
    text-align: left;
  }

  .hero__inner {
    align-items: flex-start;
  }

  .hero__subtitle,
  .hero__actions {
    justify-content: flex-start;
  }
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.hero__inner > * {
  animation: heroEnter 0.7s ease backwards;
}

.hero__inner > *:nth-child(1) { animation-delay: 0.05s; }
.hero__inner > *:nth-child(2) { animation-delay: 0.15s; }
.hero__inner > *:nth-child(3) { animation-delay: 0.25s; }
.hero__inner > *:nth-child(4) { animation-delay: 0.35s; }
.hero__inner > *:nth-child(5) { animation-delay: 0.45s; }

@keyframes heroEnter {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__label {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  font-family: var(--font-cyber);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__label-prefix {
  color: var(--accent-detail);
  animation: prefixPulse 3s ease-in-out infinite;
}

@keyframes prefixPulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 900;
  line-height: 1;
  color: var(--text);
}

.hero__title-wrap {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.35em;
  max-width: 100%;
  cursor: default;
  outline: none;
  line-height: 1;
}

.hero__title-wrap:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.hero__bracket--open,
.hero__title-text,
.hero__bracket--close {
  display: inline;
}

.hero__title-text {
  color: inherit;
  letter-spacing: 0.1em;
}

/* Hover / focus: cyberpunk glitch — cyan + magenta */
.hero__title.is-cyberpunk .hero__title-text,
.hero__title.is-cyberpunk .hero__bracket--open,
.hero__title.is-cyberpunk .hero__bracket--close {
  font-family: "Orbitron", var(--font-mono);
  font-weight: 900;
  letter-spacing: 0.14em;
  color: #00f5d4;
  text-shadow:
    0 0 12px rgba(0, 245, 212, 0.55),
    2px 0 #ff00ff,
    -2px 0 #00ffff;
  animation: titleGlitch 0.12s steps(2, end) infinite;
}

.hero__title.is-cyberpunk .hero__bracket--close {
  color: #ff00ff;
  text-shadow: 0 0 10px rgba(255, 0, 255, 0.55);
}

@keyframes titleGlitch {
  0% {
    transform: translate(0);
    filter: hue-rotate(0deg);
  }
  25% {
    transform: translate(-2px, 1px) skewX(-2deg);
    filter: hue-rotate(20deg);
  }
  50% {
    transform: translate(2px, -1px) skewX(2deg);
    clip-path: inset(12% 0 78% 0);
  }
  75% {
    transform: translate(-1px, 0);
    clip-path: inset(58% 0 22% 0);
  }
  100% {
    transform: translate(0);
    filter: hue-rotate(0deg);
  }
}

.hero__bracket {
  font-family: var(--font-display);
  font-weight: 700;
}

@keyframes bracketGlow {
  0%, 100% { opacity: 0.55; text-shadow: none; }
  50% { opacity: 1; text-shadow: 0 0 16px rgba(0, 229, 255, 0.3); }
}

.hero__bracket--open {
  color: var(--accent);
  opacity: 0.75;
  animation: bracketGlow 4s ease-in-out infinite;
}

.hero__bracket--close {
  color: var(--accent-complement);
  opacity: 0.75;
  animation: bracketGlowRed 4s ease-in-out infinite;
}

@keyframes bracketGlowRed {
  0%, 100% { opacity: 0.55; text-shadow: none; }
  50% { opacity: 1; text-shadow: 0 0 16px rgba(255, 45, 85, 0.35); }
}

.hero__name {
  font-family: var(--font-cyber);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__env {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.4rem 0.875rem;
  border: var(--border-weight) solid var(--border);
  background: var(--bg-elevated);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}

.hero__env-icon {
  display: flex;
  color: var(--accent);
  animation: tuxFloat 4s ease-in-out infinite;
}

.hero__path {
  color: var(--accent);
}

@keyframes tuxFloat {
  0%, 100% { transform: translateY(0); opacity: 0.85; }
  50% { transform: translateY(-2px); opacity: 1; }
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero__subtitle {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: clamp(0.8125rem, 2.5vw, 0.9375rem);
  color: var(--text-muted);
}

.hero__divider {
  color: var(--border);
  user-select: none;
}

.hero__tech {
  color: var(--text-muted);
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

.hero__tech.is-active {
  color: var(--accent-highlight);
  text-shadow: 0 0 12px rgba(103, 209, 23, 0.45);
}

.hero__subtitle:hover .hero__tech {
  color: var(--text);
}

.hero__tech.is-active,
.hero__subtitle:hover .hero__tech.is-active {
  color: var(--accent-highlight);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-cyber);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: var(--border-weight) solid var(--border-hover);
  background: var(--accent-muted);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.hero__cta:hover,
.hero__cta:focus-visible {
  background: rgba(0, 229, 255, 0.2);
  border-color: var(--accent);
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(0, 229, 255, 0.28);
  transform: translate(calc(var(--brutal-offset) * -0.5), calc(var(--brutal-offset) * -0.5));
}

.hero__cta--secondary {
  color: var(--text-muted);
  background: transparent;
  border-color: var(--border);
}

.hero__cta--secondary:hover,
.hero__cta--secondary:focus-visible {
  color: var(--text);
  background: var(--bg-elevated);
  border-color: var(--border-hover);
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(255, 255, 255, 0.06);
}

.hero__accent-line {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(160px, 35%);
  height: 3px;
  background: var(--accent);
  opacity: 0.85;
  animation: accentPulse 3s ease-in-out infinite;
}

@keyframes accentPulse {
  0%, 100% { opacity: 0.55; width: min(120px, 30%); }
  50% { opacity: 1; width: min(200px, 42%); }
}

/* ── Code terminal ── */
.code-terminal {
  width: 100%;
  text-align: left;
  background: var(--bg-elevated);
  border: var(--border-weight) solid var(--border);
  overflow: hidden;
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(0, 0, 0, 0.35);
}

.code-terminal__header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 0.875rem;
  background: var(--bg-subtle);
  border-bottom: var(--border-weight) solid var(--border);
}

.code-terminal__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
}

.code-terminal__dot:nth-child(1) { background: rgba(255, 95, 86, 0.7); }
.code-terminal__dot:nth-child(2) { background: rgba(255, 189, 46, 0.7); }
.code-terminal__dot:nth-child(3) { background: rgba(103, 209, 23, 0.85); }

.code-terminal__title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
}

.code-terminal__body {
  padding: 1rem 1.125rem;
  min-height: 120px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.65;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Hero terminal: cyberbrutalist shard ── */
.code-terminal--shard {
  --shard: 20px;
  --shard-sm: 12px;
  position: relative;
  background: var(--bg-elevated);
  border: none;
  overflow: hidden;
  clip-path: polygon(
    0 var(--shard),
    var(--shard) 0,
    calc(100% - var(--shard)) 0,
    100% var(--shard-sm),
    100% calc(100% - var(--shard-sm)),
    calc(100% - var(--shard-sm)) 100%,
    calc(100% - 52px) 100%,
    calc(100% - 60px) calc(100% - 10px),
    var(--shard) calc(100% - 10px),
    var(--shard-sm) 100%,
    0 100%
  );
  box-shadow: none;
  filter: drop-shadow(5px 5px 0 rgba(0, 0, 0, 0.45));
}

.code-terminal--shard::before {
  content: "";
  position: absolute;
  display: block;
  top: 0;
  left: var(--shard);
  width: calc(100% - var(--shard) - 18px);
  height: 1px;
  border: none;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(0, 229, 255, 0.5), 0 0 14px rgba(0, 229, 255, 0.18);
  opacity: 0.7;
  pointer-events: none;
  z-index: 2;
}

.code-terminal--shard::after {
  content: "";
  position: absolute;
  display: block;
  top: var(--shard-sm);
  right: 0;
  width: 1px;
  height: calc(100% - var(--shard-sm) * 2);
  border: none;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(0, 229, 255, 0.5), 0 0 14px rgba(0, 229, 255, 0.18);
  opacity: 0.7;
  pointer-events: none;
  z-index: 2;
}

.code-terminal--shard .code-terminal__header {
  position: relative;
  padding: 0.65rem 0.875rem;
  background: var(--bg-subtle);
  border-bottom: none;
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - 10px),
    calc(100% - 28px) 100%,
    0 100%
  );
}

.code-terminal--shard .code-terminal__header::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 4px;
  width: 31px;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(0, 229, 255, 0.5), 0 0 14px rgba(0, 229, 255, 0.18);
  transform: rotate(-21deg);
  transform-origin: right center;
  opacity: 0.7;
  pointer-events: none;
}

.code-terminal--shard .code-terminal__header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: calc(100% - 28px);
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(0, 229, 255, 0.5), 0 0 14px rgba(0, 229, 255, 0.18);
  opacity: 0.7;
  pointer-events: none;
}

.code-terminal--shard .code-terminal__body {
  min-height: 120px;
  padding: 1rem 1.125rem;
  background: var(--bg-elevated);
}

.code-terminal--shard .code-terminal__body.is-neofetch-output {
  font-size: 0.42rem;
  line-height: 1.08;
  letter-spacing: -0.01em;
  max-height: 172px;
  overflow: hidden;
}

.code-terminal--shard .code-terminal__body.is-neofetch-output code {
  display: block;
  white-space: pre;
  overflow: hidden;
}

@media (max-width: 899px) {
  .code-terminal--shard {
    clip-path: polygon(
      0 14px, 14px 0, calc(100% - 14px) 0, 100% 14px,
      100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%
    );
  }
}

/* ── Code snippet (About) ── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 768px) {
  .about__grid {
    grid-template-columns: 1fr minmax(260px, 340px);
  }
}

.code-snippet {
  background: var(--bg-elevated);
  border: var(--border-weight) solid var(--border);
  overflow: hidden;
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(0, 0, 0, 0.3);
}

.code-snippet__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.875rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-subtle);
  border-bottom: var(--border-weight) solid var(--border);
}

.code-snippet__status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-highlight);
}

.code-snippet__body {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  overflow-x: auto;
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-highlight);
  box-shadow: 0 0 8px rgba(103, 209, 23, 0.65);
  animation: statusPulse 2s ease-in-out infinite;
}

.status-dot--inline {
  margin-left: 0.35rem;
  vertical-align: middle;
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

/* ── About ── */
.about__meta {
  max-width: 640px;
  margin-bottom: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--text-muted);
  padding: 0.625rem 0.875rem;
  border: var(--border-weight) solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--bg-elevated);
}

.about__content {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about__content p {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ── Skills ── */
.section--skills {
  padding-block: clamp(5rem, 12vw, 7rem);
  border-top: var(--border-weight) solid var(--border);
  border-bottom: var(--border-weight) solid var(--border);
  background: linear-gradient(180deg, rgba(17, 24, 32, 0.45), transparent 40%, transparent 60%, rgba(17, 24, 32, 0.35));
}

.skills__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: 2rem;
}

.skills__head .section__title {
  margin-bottom: 0;
}

.skills__intro {
  max-width: 420px;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.skills__panel {
  background: var(--bg-elevated);
  border: var(--border-weight) solid var(--border);
  overflow: hidden;
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(0, 0, 0, 0.35);
}

.skills__panel-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.875rem 1.25rem;
  background: var(--bg-subtle);
  border-bottom: var(--border-weight) solid var(--border);
}

.skills__panel-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
}

.skills__panel-dot:nth-child(1) { background: rgba(255, 95, 86, 0.75); }
.skills__panel-dot:nth-child(2) { background: rgba(255, 189, 46, 0.75); }
.skills__panel-dot:nth-child(3) { background: rgba(0, 229, 255, 0.85); }

.skills__panel-path {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.skills__panel-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-highlight);
}

.skills__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--border);
  padding: 0;
}

@media (min-width: 640px) {
  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .skills__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skills__group--wide {
  grid-column: 1 / -1;
  min-height: auto;
  padding-block: 2rem;
}

.skills__group {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-height: 168px;
  padding: 1.75rem 1.5rem;
  background: var(--bg-elevated);
  border: none;
  border-radius: 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.skills__group--ai {
  min-height: auto;
  gap: 1rem;
}

.skills__group:hover {
  background: var(--bg-subtle);
  box-shadow: inset 3px 0 0 var(--accent);
  transform: none;
}

.skills__group-head {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.skills__index {
  flex-shrink: 0;
  font-family: var(--font-cyber);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-detail);
  opacity: 1;
}

.skills__label {
  font-family: var(--font-cyber);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 0;
}

.skills__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-top: auto;
}

.skills__badges--wide {
  gap: 0.75rem;
}

.skills__group .badge--skill {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.skills__group:hover .badge--skill {
  transform: none;
  box-shadow: 2px 2px 0 rgba(103, 209, 23, 0.15);
}

.skills__note {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.skills__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: auto;
}

@media (min-width: 480px) {
  .skills__split {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

.skills__block {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.skills__sub-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--code-comment);
}

.skills__group--wide .skills__badges--wide {
  justify-content: flex-start;
}

@media (min-width: 768px) {
  .skills__group--wide .skills__badges--wide {
    justify-content: center;
  }
}

@media (max-width: 639px) {
  .skills__group {
    min-height: auto;
  }

  .skills__split {
    grid-template-columns: 1fr;
  }
}

/* ── Projects ── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: var(--border-weight) solid var(--border);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.project-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-subtle);
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(0, 229, 255, 0.18);
  transform: translate(calc(var(--brutal-offset) * -0.5), calc(var(--brutal-offset) * -0.5));
}

.project-card__code {
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  background: var(--bg);
  border: var(--border-weight) solid var(--border);
  overflow: hidden;
  position: relative;
}

.project-card__code::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.06), transparent);
  transform: translateX(-100%);
  animation: codeScan 4s ease-in-out infinite;
}

.project-card:nth-child(2) .project-card__code::after { animation-delay: 0.5s; }
.project-card:nth-child(3) .project-card__code::after { animation-delay: 1s; }
.project-card:nth-child(4) .project-card__code::after { animation-delay: 1.5s; }
.project-card:nth-child(5) .project-card__code::after { animation-delay: 2s; }
.project-card:nth-child(6) .project-card__code::after { animation-delay: 2.5s; }
.project-card:nth-child(7) .project-card__code::after { animation-delay: 3s; }

@keyframes codeScan {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.project-card__title {
  font-family: var(--font-cyber);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}

.project-card__desc {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 0.5rem;
  border-top: var(--border-weight) solid var(--border);
}

.badge {
  display: inline-block;
  padding: 0.3rem 0.625rem;
  font-family: var(--font-cyber);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-muted);
  border: var(--border-weight) solid rgba(0, 229, 255, 0.25);
}

.badge--muted {
  color: var(--text-muted);
  background: transparent;
  border-color: var(--border);
}

.badge--linux {
  color: var(--accent-highlight);
  border-color: rgba(103, 209, 23, 0.55);
  background: rgba(103, 209, 23, 0.1);
  box-shadow: 2px 2px 0 rgba(103, 209, 23, 0.18);
}

.badge--ai {
  color: var(--code-fn);
  background: rgba(210, 168, 255, 0.1);
  border-color: rgba(210, 168, 255, 0.28);
}

.badge--service {
  color: var(--code-keyword);
  background: rgba(121, 192, 255, 0.08);
  border-color: rgba(121, 192, 255, 0.25);
}

.project-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 0.25rem;
}

.project-card__link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  transition: opacity var(--transition);
}

.project-card__link:hover,
.project-card__link:focus-visible {
  opacity: 1;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ── Contact ── */
.contact__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.contact__header .section__title {
  margin-bottom: 0;
}

.contact__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-cyber);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-highlight);
}

.contact__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 900px) {
  .contact__layout {
    grid-template-columns: 1fr minmax(300px, 380px);
  }
}

.contact__channels {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem;
  text-align: left;
  background: var(--bg-elevated);
  border: var(--border-weight) solid var(--border);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition);
}

button.contact-card {
  width: 100%;
  font: inherit;
  color: inherit;
}

.contact-card:hover,
.contact-card:focus-visible {
  border-color: var(--border-hover);
  background: var(--bg-subtle);
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(0, 229, 255, 0.15);
  transform: translate(calc(var(--brutal-offset) * -0.5), calc(var(--brutal-offset) * -0.5));
}

.contact-card--action.is-copied {
  border-color: var(--accent-highlight);
  box-shadow: inset 3px 0 0 var(--accent-highlight);
}

.contact-card__cmd {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent-detail);
}

.contact-card__label {
  font-family: var(--font-cyber);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  margin-top: 0.25rem;
}

.contact-card__value {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  word-break: break-all;
}

.linux-panel {
  background: var(--bg-elevated);
  border: var(--border-weight) solid var(--border);
  overflow: hidden;
  box-shadow: var(--brutal-offset) var(--brutal-offset) 0 rgba(0, 0, 0, 0.35);
}

.linux-panel__tux {
  position: absolute;
  top: 3.5rem;
  right: 1rem;
  opacity: 0.35;
  pointer-events: none;
  animation: tuxFloat 5s ease-in-out infinite;
}

.linux-panel__body {
  padding: 1rem 1.125rem;
  min-height: 72px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.65;
  color: var(--text);
  border-bottom: var(--border-weight) solid var(--border);
}

.linux-panel__info {
  padding: 0.875rem 1.125rem;
  display: grid;
  gap: 0.4rem;
  border-bottom: var(--border-weight) solid var(--border);
}

.linux-panel__row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.linux-panel__row span:first-child {
  color: var(--accent-detail);
  min-width: 3.5rem;
}

.linux-panel__row span:last-child {
  color: var(--text-muted);
  text-align: right;
}

.linux-bars {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.875rem 1.125rem;
}

.linux-bars__label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.linux-bars__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
}

.linux-bars__track {
  height: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.linux-bars__fill {
  display: block;
  height: 100%;
  width: var(--load);
  background: var(--accent);
  animation: loadPulse 3s ease-in-out infinite;
  transition: width 0.8s ease;
}

.linux-bars__track:nth-child(1) .linux-bars__fill { animation-delay: 0s; }
.linux-bars__track:nth-child(2) .linux-bars__fill { animation-delay: 0.3s; }
.linux-bars__track:nth-child(3) .linux-bars__fill { animation-delay: 0.6s; }
.linux-bars__track:nth-child(4) .linux-bars__fill { animation-delay: 0.9s; }

@keyframes loadPulse {
  0%, 100% { opacity: 0.65; filter: brightness(0.9); }
  50% { opacity: 1; filter: brightness(1.15); }
}

/* ── Footer ── */
.footer {
  border-top: var(--border-weight) solid var(--border);
  padding-block: 2rem;
  background: var(--bg-elevated);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer__shell {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer__shell .tok-comment {
  color: var(--accent-detail);
}

/* ── Button press: TV static burst (all pressable buttons) ── */
.btn-pressable {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.btn-pressable.is-tv-static {
  animation: tvSignalJitter 0.32s steps(7, end) forwards;
}

.tv-static-burst {
  position: absolute;
  inset: -2px;
  z-index: 6;
  pointer-events: none;
  opacity: 1;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent 0px,
      transparent 1px,
      rgba(255, 255, 255, 0.55) 1px,
      rgba(255, 255, 255, 0.55) 2px,
      transparent 2px,
      transparent 4px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(0, 229, 255, 0.35) 0px,
      rgba(0, 229, 255, 0.35) 1px,
      rgba(255, 45, 85, 0.3) 1px,
      rgba(255, 45, 85, 0.3) 2px,
      transparent 2px,
      transparent 5px
    ),
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.08) 0px,
      rgba(255, 255, 255, 0.08) 6px,
      rgba(0, 0, 0, 0.25) 6px,
      rgba(0, 0, 0, 0.25) 8px
    );
  background-size: 100% 3px, 6px 100%, 100% 14px;
  mix-blend-mode: hard-light;
  animation: tvStaticBurst 0.32s steps(8, end) forwards;
}

@keyframes tvStaticBurst {
  0% {
    opacity: 0.95;
    transform: translateY(0) translateX(0) scaleX(1);
    background-position: 0 0, 0 0, 0 0;
    clip-path: inset(0 0 0 0);
    filter: contrast(2.2) brightness(1.35);
  }
  10% {
    opacity: 1;
    transform: translateY(-14px) translateX(-6px) scaleX(1.06);
    background-position: 0 -28px, -10px 0, 0 -12px;
    clip-path: inset(8% 0 72% 0);
  }
  22% {
    opacity: 0.45;
    transform: translateY(18px) translateX(8px) scaleX(0.94);
    background-position: 0 36px, 14px 0, 0 20px;
    clip-path: inset(48% 0 18% 0);
    filter: contrast(3) brightness(0.75);
  }
  34% {
    opacity: 1;
    transform: translateY(-10px) translateX(-12px) scaleX(1.1);
    background-position: 0 -16px, -18px 0, 0 -8px;
    clip-path: inset(0 0 58% 0);
    filter: contrast(2.8) brightness(1.5);
  }
  46% {
    opacity: 0.35;
    transform: translateY(12px) translateX(10px) scaleX(0.92);
    background-position: 0 24px, 12px 0, 0 16px;
    clip-path: inset(62% 0 0 0);
  }
  58% {
    opacity: 0.9;
    transform: translateY(-20px) translateX(4px) scaleX(1.04);
    background-position: 0 -40px, 6px 0, 0 -24px;
    clip-path: inset(22% 0 38% 0);
    filter: contrast(2.5) brightness(1.2);
  }
  70% {
    opacity: 0.55;
    transform: translateY(8px) translateX(-8px) scaleX(1.08);
    background-position: 0 14px, -8px 0, 0 10px;
    clip-path: inset(75% 0 5% 0);
  }
  82% {
    opacity: 1;
    transform: translateY(-6px) translateX(6px) scaleX(0.98);
    background-position: 0 -10px, 10px 0, 0 -6px;
    clip-path: inset(12% 0 68% 0);
  }
  100% {
    opacity: 0;
    transform: translateY(0) translateX(0) scaleX(1);
    background-position: 0 0, 0 0, 0 0;
    clip-path: inset(0 0 0 0);
    filter: none;
  }
}

@keyframes tvSignalJitter {
  0%, 100% {
    transform: translate(0);
    filter: none;
  }
  14% {
    transform: translate(-3px, 2px);
    filter: brightness(1.25) contrast(1.15);
  }
  28% {
    transform: translate(4px, -3px);
    filter: brightness(0.8);
  }
  42% {
    transform: translate(-4px, -1px);
    filter: brightness(1.35);
  }
  56% {
    transform: translate(3px, 3px);
    filter: brightness(0.9) contrast(1.2);
  }
  70% {
    transform: translate(-2px, -2px);
    filter: brightness(1.2);
  }
  84% {
    transform: translate(2px, 1px);
    filter: brightness(0.95);
  }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  body::before {
    opacity: 0;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__code-scroll,
  .hero__linux-scroll,
  .code-cursor,
  .hero__bracket,
  .hero__label-prefix,
  .hero__accent-line,
  .hero__env-icon,
  .linux-panel__tux,
  .linux-bars__fill,
  .status-dot,
  .project-card__code::after,
  .hero__inner > *,
  .hero__title.is-cyberpunk .hero__title-text,
  .hero__title.is-cyberpunk .hero__bracket--open,
  .hero__title.is-cyberpunk .hero__bracket--close {
    animation: none;
  }

  .lang-switch__btn:active,
  .header__toggle:active,
  a.hero__cta:active,
  .btn-pressable.is-tv-static,
  .tv-static-burst {
    animation: none;
  }

  .project-card:hover,
  .skills__group:hover,
  .contact-card:hover,
  .hero__cta:hover {
    transform: none;
    box-shadow: none;
  }
}

/* ── Mobile Nav ── */
@media (max-width: 768px) {
  .header__toggle {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem;
    background: var(--bg);
    border-bottom: var(--border-weight) solid var(--border);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .header.nav-open .header__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .header.nav-open .header__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .header.nav-open .header__toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .header.nav-open .header__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header__link {
    padding: 0.875rem 1rem;
    transition: color var(--transition), background var(--transition);
  }

  .header__link:hover {
    background: var(--bg-subtle);
    text-decoration: none;
  }

  .projects__grid {
    grid-template-columns: 1fr;
  }

  .skills__head {
    flex-direction: column;
    align-items: flex-start;
  }

  .skills__panel-path {
    display: none;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .hero__code-scroll {
    right: -20%;
    opacity: 0.1;
  }

  .hero__linux-scroll {
    left: -25%;
    opacity: 0.08;
  }

  .contact__channels {
    grid-template-columns: 1fr;
  }

  .code-terminal {
    max-width: 100%;
  }
}