/* ========================
   CUSTOM PROPERTIES
   ======================== */
:root {
  --bg:               #080808;
  --bg-surface:       #0f0f0f;
  --bg-surface-2:     #141414;
  --bg-border:        #1f1f1f;
  --bg-border-bright: #2a2a2a;
  --text-primary:     #ebebeb;
  --text-muted:       #909090;
  --text-dim:         #555555;
  --accent:           #3b82f6;
  --accent-dim:       #1d4ed8;
  --accent-glow:      rgba(59, 130, 246, 0.12);
  --accent-glow-strong: rgba(59, 130, 246, 0.22);
  --glitch-a:         #ff003c;
  --glitch-b:         #00e5ff;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.75rem;
  --space-lg:  3.5rem;
  --space-xl:  6rem;
  --space-2xl: 10rem;

  --font:      'JetBrains Mono', 'Courier New', monospace;
  --size-xs:   0.75rem;
  --size-sm:   0.875rem;
  --size-base: 1rem;
  --size-md:   1.25rem;
  --size-lg:   1.625rem;
  --size-xl:   2.5rem;
  --size-hero: clamp(4rem, 11vw, 8.5rem);

  --max-width: 1320px;
  --nav-height: 64px;

  --transition-fast: 120ms ease;
  --transition-base: 220ms ease;
  --transition-slow: 400ms ease;
}


/* ========================
   RESET & BASE
   ======================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

/* Re-enable tap highlight only on real interactive elements */
a, button, [role="button"], label, select, summary {
  -webkit-tap-highlight-color: rgba(59, 130, 246, 0.15);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: var(--size-base);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol { list-style: none; }
img, video { max-width: 100%; display: block; }

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


/* ========================
   LAYOUT
   ======================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

section {
  padding: var(--space-2xl) 0;
  scroll-margin-top: var(--nav-height);
  position: relative;
}

#hero { scroll-margin-top: 0; }


/* ========================
   BACKDROP / TEXTURE
   ======================== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, #1e1e1e 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
}

.hero-glow {
  position: absolute;
  top: 5%;
  right: -8%;
  width: clamp(320px, 60vw, 750px);
  height: clamp(320px, 60vw, 750px);
  background: radial-gradient(circle, var(--accent-glow-strong) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
  filter: blur(2px);
}

@keyframes scanline {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

body::after {
  content: '';
  position: fixed;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, rgba(59,130,246,0.07), transparent);
  z-index: 1;
  pointer-events: none;
  animation: scanline 12s linear infinite;
}

header, main, footer { position: relative; z-index: 2; }


/* ========================
   CANVAS NOISE GRAIN
   ======================== */
.hero-noise {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  mix-blend-mode: overlay;
  opacity: 0.85;
}


/* ========================
   NAVIGATION
   ======================== */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(8, 8, 8, 0.92);
  border-bottom: 1px solid var(--bg-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav-brand {
  font-size: var(--size-md);
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  text-transform: lowercase;
  transition: color var(--transition-fast);
}

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

nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

nav ul a {
  font-size: var(--size-base);
  color: var(--text-muted);
  text-transform: lowercase;
  letter-spacing: 0.06em;
  transition: color var(--transition-fast);
}

nav ul a:hover  { color: var(--text-primary); }
nav ul a.active { color: var(--accent); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--text-muted);
  transition: transform var(--transition-base), opacity var(--transition-base), background var(--transition-fast);
}

.nav-hamburger:hover span { background: var(--text-primary); }

header.nav-open .nav-hamburger span:first-child { transform: translateY(3px) rotate(45deg); }
header.nav-open .nav-hamburger span:last-child  { transform: translateY(-3px) rotate(-45deg); }


/* ========================
   HERO
   ======================== */
#hero {
  min-height: calc(100vh - var(--nav-height));
  display: grid;
  place-items: center;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
  max-width: 960px;
}

.glitch {
  font-size: var(--size-hero);
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: lowercase;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
  line-height: 1;
  -webkit-font-smoothing: antialiased;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  font-size: var(--size-hero);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}

.glitch::before { color: var(--glitch-a); mix-blend-mode: screen; }
.glitch::after  { color: var(--glitch-b); mix-blend-mode: screen; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--size-xs);
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.hero-badge::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent); }
  50%       { opacity: 0.4; box-shadow: 0 0 3px var(--accent); }
}

.hero-tagline {
  font-size: clamp(1.25rem, 3vw, 2.25rem);
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.01em;
  margin-top: var(--space-sm);
}

.terminal-cursor {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  background: var(--accent);
  margin-left: 3px;
  vertical-align: text-bottom;
  animation: cursor-blink 1.1s step-end infinite;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-sub {
  font-size: var(--size-base);
  color: var(--text-muted);
  letter-spacing: 0.02em;
  max-width: 64ch;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.hero-location {
  font-size: var(--size-xs);
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}


/* ========================
   SECTION HEADERS
   ======================== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--size-xs);
  color: var(--text-dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

h2 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}


/* ========================
   SERVICES
   ======================== */
#services { border-top: 1px solid var(--bg-border); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--bg-border);
  border: 1px solid var(--bg-border);
}

.card {
  background: var(--bg-surface);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-base);
}

.card:hover { background: var(--bg-surface-2); }

/* Accent top-bar on hover — uses ::before */
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover::before { opacity: 1; }

/* Scan-line sweep on hover — uses a child span injected by JS */
.card-scanline {
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  opacity: 0;
  pointer-events: none;
  top: -2px;
}

.card:hover .card-scanline {
  animation: card-scan 0.65s ease-out forwards;
}

@keyframes card-scan {
  0%   { top: -2px;              opacity: 0.7; }
  100% { top: calc(100% + 2px);  opacity: 0; }
}

.card-icon {
  font-size: 1.375rem;
  margin-bottom: var(--space-sm);
  opacity: 0.7;
}

.card h3 {
  font-size: var(--size-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--bg-border);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.card ul {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: var(--space-xs);
}

.card ul li {
  font-size: var(--size-sm);
  color: var(--text-muted);
  padding-left: var(--space-md);
  position: relative;
  line-height: 1.6;
}

.card ul li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
  opacity: 0.7;
  font-size: 1rem;
  line-height: 1.55;
}


/* ========================
   HOW IT WORKS
   ======================== */
#how-it-works { border-top: 1px solid var(--bg-border); }

.work-modes { display: flex; flex-direction: column; }

.work-mode {
  display: grid;
  grid-template-columns: 3rem minmax(220px, 280px) 1fr auto;
  gap: var(--space-lg);
  padding: var(--space-md) var(--space-sm);
  border-bottom: 1px solid var(--bg-border);
  border-left: 2px solid transparent;
  align-items: center;
  transition: background var(--transition-fast), border-left-color var(--transition-fast);
}

.work-mode:first-child { border-top: 1px solid var(--bg-border); }

.work-mode:hover {
  background: rgba(59, 130, 246, 0.04);
  border-left-color: var(--accent);
}

.work-mode:hover .mode-label {
  text-shadow: 0 0 14px rgba(59, 130, 246, 0.55);
}

.work-mode-num {
  font-size: var(--size-xs);
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.mode-label {
  font-size: var(--size-md);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.03em;
  transition: text-shadow var(--transition-fast);
}

.mode-desc {
  font-size: var(--size-base);
  color: var(--text-muted);
  line-height: 1.6;
}

.mode-tag {
  font-size: var(--size-xs);
  color: var(--text-dim);
  border: 1px solid var(--bg-border-bright);
  padding: 0.25rem 0.7rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}


/* ========================
   ABOUT
   ======================== */
#about { border-top: 1px solid var(--bg-border); }

.about-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-copy {
  font-size: var(--size-md);
  color: var(--text-muted);
  max-width: 54ch;
  margin-bottom: var(--space-lg);
  line-height: 1.9;
}

.client-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-lg);
  border: 1px solid var(--bg-border);
}

.client-list li {
  font-size: var(--size-base);
  color: var(--text-muted);
  padding: 1rem var(--space-sm);
  padding-left: calc(var(--space-sm) + var(--space-md));
  border-bottom: 1px solid var(--bg-border);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.client-list li:last-child { border-bottom: none; }

.client-list li:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.client-list li::before {
  content: '—';
  position: absolute;
  left: var(--space-sm);
  color: var(--accent);
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.stat-block {
  border-left: 2px solid var(--accent);
  padding-left: var(--space-md);
}

.stat-value {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-label {
  font-size: var(--size-sm);
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.4rem;
}

.location-note {
  font-size: var(--size-sm);
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--bg-border);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.location-note::before {
  content: '◉';
  color: var(--accent);
  font-size: 0.6rem;
}


/* ========================
   BUTTONS
   ======================== */
.btn {
  display: inline-block;
  width: fit-content;
  font-family: var(--font);
  font-size: var(--size-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  text-decoration: none;
  padding: 0.75rem 2rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  box-shadow: 0 0 24px var(--accent-glow-strong);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--bg-border-bright);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn--nav {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--bg-border);
}

.btn--nav:hover {
  color: var(--text-primary);
  border-color: var(--bg-border-bright);
}


/* ========================
   FOOTER
   ======================== */
footer {
  border-top: 1px solid var(--bg-border);
  padding: var(--space-lg) 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-brand {
  font-size: var(--size-sm);
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.footer-brand strong {
  color: var(--text-primary);
  font-weight: 700;
}

footer small {
  font-size: var(--size-xs);
  color: var(--text-dim);
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
}

.lang-btn {
  font-family: var(--font);
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  background: none;
  border: 1px solid transparent;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.lang-btn:hover { color: var(--text-primary); border-color: var(--bg-border-bright); }
.lang-btn--active { color: var(--accent); border-color: var(--bg-border-bright); }


/* ========================
   ANIMATIONS
   ======================== */

/* Hero glitch — body shake */
@keyframes glitch-shake {
  0%   { transform: translateX(0)    skewX(0deg); }
  15%  { transform: translateX(-5px) skewX(-1.5deg); }
  35%  { transform: translateX(5px)  skewX(1.5deg); }
  55%  { transform: translateX(-3px) skewX(-0.5deg); }
  75%  { transform: translateX(3px)  skewX(0.5deg); }
  90%  { transform: translateX(-1px) skewX(0deg); }
  100% { transform: translateX(0)    skewX(0deg); }
}

/* Red channel — fat visible slice tears */
@keyframes glitch-clip-a {
  0%   { clip-path: inset(4%  0 90% 0); transform: translateX(-8px); opacity: 1; }
  20%  { clip-path: inset(48% 0 38% 0); transform: translateX(7px);  opacity: 1; }
  40%  { clip-path: inset(22% 0 58% 0); transform: translateX(-6px); opacity: 1; }
  60%  { clip-path: inset(72% 0  8% 0); transform: translateX(8px);  opacity: 1; }
  80%  { clip-path: inset(14% 0 78% 0); transform: translateX(-4px); opacity: 1; }
  100% { clip-path: inset(0   0 100% 0); transform: translateX(0);   opacity: 0; }
}

/* Cyan channel — complementary offset */
@keyframes glitch-clip-b {
  0%   { clip-path: inset(58% 0 22% 0); transform: translateX(7px);  opacity: 1; }
  25%  { clip-path: inset(8%  0 78% 0); transform: translateX(-8px); opacity: 1; }
  50%  { clip-path: inset(82% 0  3% 0); transform: translateX(6px);  opacity: 1; }
  75%  { clip-path: inset(33% 0 48% 0); transform: translateX(-7px); opacity: 1; }
  100% { clip-path: inset(0   0 100% 0); transform: translateX(0);   opacity: 0; }
}

.glitch--active               { animation: glitch-shake  0.28s linear forwards; }
.glitch--active::before       { animation: glitch-clip-a 0.28s linear forwards; }
.glitch--active::after        { animation: glitch-clip-b 0.28s linear 35ms forwards; }


/* Ambient flicker on other elements */
@keyframes flicker-text {
  0%   { opacity: 1;   transform: translateX(0);    clip-path: inset(0); }
  12%  { opacity: 0.08; transform: translateX(-2px); clip-path: inset(18% 0 58% 0); }
  25%  { opacity: 1;   transform: translateX(2px);  clip-path: inset(0); }
  48%  { opacity: 0.45; transform: translateX(-1px); clip-path: inset(62% 0 12% 0); }
  65%  { opacity: 1;   transform: translateX(0);    clip-path: inset(0); }
  82%  { opacity: 0.85; transform: translateX(1px);  clip-path: inset(0); }
  100% { opacity: 1;   transform: translateX(0);    clip-path: inset(0); }
}

.flicker--active { animation: flicker-text 0.32s linear forwards; }





/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body::after { animation: none; }
  .hero-badge::before { animation: none; }
  .terminal-cursor { animation: none; opacity: 1; }
  .glitch--active, .glitch--active::before, .glitch--active::after { animation: none; }
  .flicker--active { animation: none; }
  .card:hover .card-scanline { animation: none; }
}


/* ========================
   RESPONSIVE — TABLET (≤ 860px)
   ======================== */
@media (max-width: 860px) {
  .container { padding-inline: var(--space-md); }

  .about-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .about-right {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-lg);
  }

  .stat-block { flex: 1 1 120px; }

  .work-mode {
    grid-template-columns: 2.5rem 1fr auto;
    gap: var(--space-md);
  }
}


/* ========================
   RESPONSIVE — MOBILE (≤ 640px)
   ======================== */
@media (max-width: 640px) {
  :root {
    --space-xl:  3.5rem;
    --space-2xl: 5rem;
    --nav-height: 54px;
    --size-xs:   0.875rem;
    --size-sm:   1rem;
    --size-base: 1.125rem;
    --size-md:   1.375rem;
    --size-hero: clamp(3rem, 16vw, 4.5rem);
  }

  .container { padding-inline: var(--space-sm); }

  /* Nav — hamburger */
  .nav-hamburger { display: flex; }

  nav ul {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: rgba(8, 8, 8, 0.97);
    border-bottom: 1px solid var(--bg-border);
    padding: 0 var(--space-md);
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 280ms ease;
    backdrop-filter: blur(12px);
  }

  nav ul li {
    width: 100%;
    border-bottom: 1px solid var(--bg-border);
    padding: var(--space-sm) 0;
  }

  nav ul li:last-child { border-bottom: none; padding-bottom: var(--space-md); }

  header.nav-open nav ul { max-height: 340px; }

  /* Hero */
  .hero-inner { padding-top: var(--space-xl); padding-bottom: var(--space-lg); }
  .hero-actions { flex-direction: column; align-items: flex-start; }

  .hero-glow {
    top: -5%;
    right: -30%;
    width: 260px;
    height: 260px;
  }

  /* Services */
  .services-grid { grid-template-columns: 1fr; }

  /* Work modes */
  .work-mode {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
    padding-left: var(--space-md);
  }

  .work-mode-num { display: none; }
  .mode-tag { align-self: flex-start; }

  /* About */
  .about-layout { grid-template-columns: 1fr; }
  .about-right { flex-direction: column; gap: var(--space-md); }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

@media (min-width: 641px) {
  .nav-hamburger { display: none; }
}