/* ══════════════════════════════════════════════
   jakubek.software — Global Styles
   Shared across all pages
   ══════════════════════════════════════════════ */

/* ── VARIABLES ── */
:root {
  --bg:       #F7F3EC;
  --bg-alt:   #EDE8DF;
  --ink:      #1C1C18;
  --ink-soft: #5C5850;
  --accent:   #9E4E1F;
  --accent-light: #E8C4A0;
  --rule:     #D8D2C7;
  --serif:    'Playfair Display', Georgia, serif;
  --body:     'Crimson Pro', 'Georgia', serif;
  --mono:     'JetBrains Mono', monospace;

  /* Inverted section (always dark bg, light text) */
  --inv-bg:       #1C1C18;
  --inv-bg-end:   #2A2822;
  --inv-text:     #F7F3EC;
  --inv-text-soft: rgba(247, 243, 236, 0.65);
  --inv-text-mid:  rgba(247, 243, 236, 0.75);
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.125rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Noise texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ── ACCESSIBILITY ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 0.8rem;
  text-decoration: none;
  z-index: 200;
  border-radius: 0 0 4px 4px;
}
.skip-link:focus { top: 0; }
.nav-mobile-logo { display: none; }
*:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── NAV ── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2.5rem;
  background: rgba(247, 243, 236, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  transition: box-shadow 0.3s;
}
header.scrolled { box-shadow: 0 1px 12px rgba(28, 28, 24, 0.06); }

.nav-logo {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}
.nav-links a {
  font-family: var(--body);
  font-size: 1rem;
  font-weight: 300;
  color: var(--ink-soft);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

.lang-toggle {
  display: flex;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
}
.lang-btn {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.6rem;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.2s;
}
.lang-btn.active { background: var(--ink); color: var(--bg); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 101;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: all 0.3s ease;
  transform-origin: center;
}
.nav-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

/* ── BUTTONS ── */
.btn {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.8rem 1.6rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  color: var(--ink);
  transition: all 0.22s;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  z-index: -1;
}
.btn:hover::before { transform: scaleX(1); }
.btn:hover { color: var(--bg); }

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}
.btn-accent::before { background: #8B4420; }
.btn-accent:hover { border-color: #8B4420; color: var(--bg); }

/* ── SHARED SECTION ELEMENTS ── */
.section-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.section-accent {
  display: block;
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin: 0 auto;
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--rule);
  padding: 2rem 10vw;
}

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

.footer-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.footer-info a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-info a:hover { color: var(--accent); }

.footer-info .footer-sep {
  color: var(--rule);
}

.footer-back-top {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
  flex-shrink: 0;
}
.footer-back-top:hover { color: var(--accent); }

/* ── DARK MODE ── */
[data-theme="dark"] {
  --bg:       #1C1C18;
  --bg-alt:   #252520;
  --ink:      #F7F3EC;
  --ink-soft: #B5B0A6;
  --accent:   #D4793E;
  --accent-light: #E8C4A0;
  --rule:     #3A3830;
}

[data-theme="dark"] body::before { opacity: 0.02; }

[data-theme="dark"] header {
  background: rgba(28, 28, 24, 0.88);
}
[data-theme="dark"] header.scrolled {
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .nav-links {
  background: var(--bg);
}

[data-theme="dark"] .lang-btn.active {
  background: var(--bg-alt);
  color: var(--ink);
  border-color: var(--rule);
}

/* Inverted sections in dark mode — lighter to stand out */
[data-theme="dark"] {
  --inv-bg:       #2A2822;
  --inv-bg-end:   #33312A;
  --inv-text:     #F7F3EC;
  --inv-text-soft: rgba(247, 243, 236, 0.65);
}

/* Auto dark mode (system preference, no manual override) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:       #1C1C18;
    --bg-alt:   #252520;
    --ink:      #F7F3EC;
    --ink-soft: #B5B0A6;
    --accent:   #D4793E;
    --accent-light: #E8C4A0;
    --rule:     #3A3830;
  }

  :root:not([data-theme="light"]) body::before { opacity: 0.02; }

  :root:not([data-theme="light"]) header {
    background: rgba(28, 28, 24, 0.88);
  }
  :root:not([data-theme="light"]) header.scrolled {
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.2);
  }

  :root:not([data-theme="light"]) .nav-links {
    background: var(--bg);
  }

  :root:not([data-theme="light"]) .lang-btn.active {
    background: var(--bg-alt);
    color: var(--ink);
  }

  :root:not([data-theme="light"]) {
    --inv-bg:       #2A2822;
    --inv-bg-end:   #33312A;
  }
}

/* Theme toggle button */
.theme-toggle {
  background: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  cursor: pointer;
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  line-height: 1;
  color: var(--ink-soft);
  transition: all 0.2s;
  display: flex;
  align-items: center;
}
.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.theme-toggle .theme-icon-light,
.theme-toggle .theme-icon-dark { display: none; }

/* Show correct icon based on current state */
[data-theme="dark"] .theme-toggle .theme-icon-light { display: inline; }
[data-theme="dark"] .theme-toggle .theme-icon-dark { display: none; }
:root:not([data-theme="dark"]) .theme-toggle .theme-icon-light { display: none; }
:root:not([data-theme="dark"]) .theme-toggle .theme-icon-dark { display: inline; }

/* aria-current for nav */
.nav-links a[aria-current="page"] {
  color: var(--ink);
  font-weight: 400;
}
.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  header {
    padding: 1rem 1rem 1rem 1.5rem;
    transition: background 0.3s, box-shadow 0.3s;
  }
  header.menu-open {
    background: var(--bg);
    backdrop-filter: none;
  }

  .nav-hamburger {
    display: flex;
    position: relative;
    z-index: 101;
    margin-left: auto;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100dvh;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 100;
    padding: 2rem;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links li { list-style: none; text-align: center; }
  .nav-links a {
    font-family: var(--serif);
    font-size: 1.5rem;
    font-weight: 400;
    display: block;
    padding: 0.5rem 0;
  }

  .nav-mobile-logo {
    display: block;
    font-family: var(--mono);
    font-size: 1rem;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: 0.02em;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--rule);
  }

  .nav-links .lang-toggle { margin-top: 1rem; }
  .nav-links .theme-toggle { margin-top: 0.5rem; }

  /* Tap targets min 44px */
  .nav-hamburger { min-width: 44px; min-height: 44px; display: flex; align-items: center; justify-content: center; }
  .lang-btn { min-width: 44px; min-height: 44px; display: flex; align-items: center; justify-content: center; }
  .theme-toggle { min-width: 44px; min-height: 44px; justify-content: center; }
  .btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }


  footer { padding: 1.5rem; }
  .footer-row {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
  .footer-info {
    justify-content: center;
  }
}