/* bugaslab.pl — static styles (dark default + light theme) */
:root, [data-theme="dark"] {
  --background: oklch(0.16 0.02 260);
  --ink: oklch(0.96 0.005 250);
  --ink-soft: oklch(0.72 0.015 255);
  --surface-elev: oklch(0.22 0.025 262);
  --surface-glass: oklch(0.22 0.025 262 / 0.55);
  --hairline: oklch(0.32 0.02 260);
  --primary-fg: oklch(0.16 0.02 260);
  --accent: oklch(0.78 0.11 245);
  --bg-grad-1: oklch(0.28 0.07 265 / 0.55);
  --bg-grad-2: oklch(0.30 0.09 250 / 0.45);
  --bg-grad-3: oklch(0.26 0.06 270 / 0.45);
  --bg-grad-base-1: oklch(0.14 0.02 262);
  --bg-grad-base-2: oklch(0.18 0.025 258);
  --header-bg: oklch(0.16 0.02 260 / 0.7);
  --mobile-menu-bg: oklch(0.16 0.02 260 / 0.95);
  --btn-outline-bg: oklch(0.22 0.025 262 / 0.6);
  --card-bg: oklch(0.22 0.025 262 / 0.55);
  --contact-bg: oklch(0.10 0.015 262);
  --contact-fg: oklch(0.96 0.005 250);
  --container: 1200px;
}

[data-theme="light"] {
  --background: oklch(0.985 0.004 240);
  --ink: oklch(0.16 0.045 262);
  --ink-soft: oklch(0.42 0.025 260);
  --surface-elev: oklch(1 0 0);
  --surface-glass: oklch(1 0 0 / 0.7);
  --hairline: oklch(0.9 0.012 250);
  --primary-fg: oklch(0.985 0.004 240);
  --accent: oklch(0.5 0.12 250);
  --bg-grad-1: oklch(0.95 0.03 255 / 0.7);
  --bg-grad-2: oklch(0.93 0.04 250 / 0.55);
  --bg-grad-3: oklch(0.94 0.025 260 / 0.45);
  --bg-grad-base-1: oklch(0.99 0.003 240);
  --bg-grad-base-2: oklch(0.97 0.008 250);
  --header-bg: oklch(0.985 0.004 240 / 0.75);
  --mobile-menu-bg: oklch(0.985 0.004 240 / 0.95);
  --btn-outline-bg: oklch(1 0 0 / 0.6);
  --card-bg: oklch(1 0 0 / 0.7);
  --contact-bg: oklch(0.16 0.045 262);
  --contact-fg: oklch(0.985 0.004 240);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  color: var(--ink);
  font-family: "Special Elite", "Courier New", ui-monospace, monospace;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  background:
    radial-gradient(ellipse 80% 60% at 15% -10%, var(--bg-grad-1), transparent 60%),
    radial-gradient(ellipse 70% 50% at 100% 0%, var(--bg-grad-2), transparent 55%),
    radial-gradient(ellipse 60% 40% at 50% 100%, var(--bg-grad-3), transparent 60%),
    linear-gradient(180deg, var(--bg-grad-base-1), var(--bg-grad-base-2));
  background-attachment: fixed;
  min-height: 100vh;
  transition: color 0.3s;
}

h1, h2, h3, h4 { letter-spacing: 0; font-weight: 400; color: var(--ink); font-family: "Special Elite", "Courier New", monospace; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.muted { color: var(--ink-soft); }

/* Kicker */
.kicker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
}
.kicker .bar { display: inline-block; width: 2rem; height: 1px; background: color-mix(in oklab, var(--ink) 30%, transparent); }
.kicker.on-dark { color: color-mix(in oklab, var(--contact-fg) 60%, transparent); }
.kicker.on-dark .bar { background: color-mix(in oklab, var(--contact-fg) 30%, transparent); }

/* Header */
#site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background-color 0.3s, border-color 0.3s, backdrop-filter 0.3s;
}
#site-header.scrolled {
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--hairline);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  height: 2.25rem;
}
.logo-img {
  height: 1.75rem;
  width: auto;
  display: block;
  transition: filter 0.3s;
}
[data-theme="dark"] .logo-img {
  filter: invert(1) brightness(1.1);
}
[data-theme="light"] .logo-img {
  filter: none;
}

.nav-desktop { display: none; gap: 2rem; align-items: center; }
.nav-desktop a {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.nav-desktop a:hover { color: var(--ink); }

.header-right { display: flex; align-items: center; gap: 0.5rem; }

.lang-switch {
  display: none;
  align-items: center;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 2px;
  background: var(--surface-glass);
  font-size: 12px;
}
.lang-switch button {
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: background 0.2s, color 0.2s;
}
.lang-switch button.active {
  background: var(--ink);
  color: var(--primary-fg);
}
.lang-switch.mobile { display: inline-flex; margin-top: 0.5rem; }

.theme-toggle {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--surface-glass);
  color: var(--ink);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.theme-toggle:hover { background: var(--surface-elev); }
.theme-toggle .ico-sun { display: none; }
.theme-toggle .ico-moon { display: inline; }
[data-theme="light"] .theme-toggle .ico-sun { display: none; }
[data-theme="light"] .theme-toggle .ico-moon { display: inline; }
[data-theme="dark"] .theme-toggle .ico-moon { display: none; }
[data-theme="dark"] .theme-toggle .ico-sun { display: inline; }

.menu-btn {
  display: inline-flex;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border: 1px solid var(--hairline);
  border-radius: 6px;
}
.menu-btn .ico-close { display: none; }
.menu-btn[aria-expanded="true"] .ico-burger { display: none; }
.menu-btn[aria-expanded="true"] .ico-close { display: inline; }

.mobile-menu { display: none; border-top: 1px solid var(--hairline); background: var(--mobile-menu-bg); backdrop-filter: blur(16px); }
.mobile-menu.open { display: block; }
.mobile-menu nav { display: flex; flex-direction: column; padding: 0.75rem 1.5rem; }
.mobile-menu a { padding: 0.5rem 0; font-size: 14px; color: var(--ink-soft); }
.mobile-menu a:hover { color: var(--ink); }

/* Hero */
.hero { padding: 8rem 0 6rem; }
.hero-title {
  max-width: 56rem;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 600;
  line-height: 1.05;
}
.hero-title .sep { color: color-mix(in oklab, var(--ink) 25%, transparent); margin: 0 0.75rem; }
.lead {
  margin-top: 2rem;
  max-width: 42rem;
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.lead.on-dark { color: color-mix(in oklab, var(--contact-fg) 70%, transparent); }
.cta-row { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  transition: transform 0.2s, background-color 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-dark {
  background: var(--ink);
  color: var(--primary-fg);
}
[data-theme="dark"] .btn-dark {
  background: var(--accent);
  color: oklch(0.16 0.02 260);
}
.btn-outline {
  border: 1px solid var(--hairline);
  background: var(--btn-outline-bg);
  color: var(--ink);
  backdrop-filter: blur(8px);
}
.btn-outline:hover { background: var(--surface-elev); transform: none; }
.btn-light { background: var(--contact-fg); color: var(--contact-bg); }

/* Generic section */
.section { padding: 6rem 0; }
.section h2 { font-size: clamp(1.875rem, 4vw, 3rem); }
.grid-12 { display: grid; gap: 3rem; grid-template-columns: 1fr; }

/* Services */
.services-grid {
  margin-top: 3.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: 1rem;
  overflow: hidden;
}
.service-card {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  padding: 2rem;
  transition: background 0.2s;
}
.service-card:hover { background: var(--surface-elev); }
.service-card .num {
  display: inline-grid; place-items: center;
  width: 2rem; height: 2rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font-size: 12px; font-weight: 500;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
}
.service-card h3 { font-size: 1.25rem; }
.service-card p { margin-top: 0.75rem; font-size: 14px; line-height: 1.6; color: var(--ink-soft); }

/* Projects */
.projects-grid {
  margin-top: 3.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.project-card {
  display: flex; flex-direction: column;
  border: 1px solid var(--hairline);
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border-radius: 1rem;
  padding: 1.75rem;
  transition: transform 0.3s, box-shadow 0.3s;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px -30px rgba(0,0,0,0.5);
}
.project-cover {
  aspect-ratio: 4 / 3;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 50%, var(--ink)));
  margin-bottom: 1.5rem;
  display: flex; align-items: flex-end; justify-content: flex-end;
  padding: 1rem;
  font-size: 12px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: oklch(0.16 0.02 260 / 0.75);
}
.project-card .tags { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.18em; color: var(--ink-soft); }
.project-card h3 { margin-top: 0.75rem; font-size: 1.125rem; }
.project-card .desc { margin-top: 0.75rem; font-size: 14px; line-height: 1.6; color: var(--ink-soft); }

/* Why */
.why-list { list-style: none; padding-top: 0.5rem; }
.why-list li {
  display: flex; align-items: center; gap: 1.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--hairline);
}
.why-list li:first-child { border-top: 1px solid var(--hairline); }
.why-list .num { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; color: var(--ink-soft); }

/* Contact */
.contact-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--contact-bg);
  color: var(--contact-fg);
  border-radius: 1.5rem;
  padding: 2.5rem;
}
.contact-card h2 { color: var(--contact-fg); max-width: 36rem; }
.contact-glow {
  pointer-events: none;
  position: absolute; top: -5rem; right: -5rem;
  width: 18rem; height: 18rem; border-radius: 999px;
  background: radial-gradient(circle, var(--accent), transparent 70%);
  opacity: 0.35; filter: blur(48px);
}
.contact-card .btn-light { margin-top: 2.5rem; }
.contact-mail { margin-top: 1.5rem; font-size: 14px; color: color-mix(in oklab, var(--contact-fg) 60%, transparent); }

/* Footer */
footer { border-top: 1px solid var(--hairline); }
.footer-inner {
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 1rem; padding: 2.5rem 1.5rem;
  font-size: 14px; color: var(--ink-soft);
}
.footer-links { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; }
.footer-links a:hover { color: var(--ink); }

/* Responsive */
@media (min-width: 640px) {
  .lang-switch { display: inline-flex; }
  .services-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 768px) {
  .nav-desktop { display: flex; }
  .menu-btn { display: none; }
  .hero { padding: 10rem 0 9rem; }
  .section { padding: 8rem 0; }
  .grid-12 { grid-template-columns: repeat(12, 1fr); }
  .col-4 { grid-column: span 4; }
  .col-5 { grid-column: span 5; }
  .col-7 { grid-column: span 7; padding-top: 0.5rem; }
  .col-8 { grid-column: span 8; }
  .projects-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-card { padding: 4rem; }
  .footer-inner { flex-direction: row; align-items: center; justify-content: space-between; }
  .why-list li span:last-child { font-size: 1.125rem; }
}