/* ============================================================
   DIDI Trans · Motion Layer
   Editorial-premium pacing — restraint, breathing room, story.
   Per-element reveals via IntersectionObserver (didi-motion.js).
   ============================================================ */

/* — global polish — */
html { scroll-behavior: smooth; }
body { text-rendering: optimizeLegibility; }

/* Selection — akcent gold zamiast default blue (editorial feel) */
::selection { background: color-mix(in srgb, var(--accent-2) 35%, transparent); color: var(--text); }
::-moz-selection { background: color-mix(in srgb, var(--accent-2) 35%, transparent); color: var(--text); }

/* Scrollbar — subtle, dark, narrow */
@media (pointer: fine) {
  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: var(--bg); }
  ::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 5px; border: 2px solid var(--bg); }
  ::-webkit-scrollbar-thumb:hover { background: color-mix(in srgb, var(--accent) 50%, var(--border-2)); }
  html { scrollbar-color: var(--border-2) var(--bg); scrollbar-width: thin; }
}

/* Headline tracking-tight — premium tight letterspacing */
h1, h2, h3, .display, .headline { letter-spacing: -0.018em; }
.display { letter-spacing: -0.022em; }

/* Subtle film grain — editorial atmosphere bez ciężaru */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 100;
  opacity: .035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* Premium focus rings — ważne dla a11y, ale dyskretne */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
  transition: outline-offset .15s ease;
}

/* Smoother text antialiasing na headlines */
.display, .headline { -webkit-font-smoothing: antialiased; letter-spacing: -0.01em; }

/* — Reveal base — initial hidden state — */
[data-reveal] {
  opacity: 0;
  will-change: opacity, transform;
  transition:
    opacity .9s cubic-bezier(.22, 1, .36, 1),
    transform .9s cubic-bezier(.22, 1, .36, 1);
}
[data-reveal="up"]    { transform: translateY(28px); }
[data-reveal="fade"]  { transform: none; }
[data-reveal="scale"] { transform: scale(.96); }
[data-reveal="left"]  { transform: translateX(-32px); }
[data-reveal="right"] { transform: translateX(32px); }

/* Revealed state — element is in viewport */
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger children: nth-child delay (do 12 dzieci) */
[data-reveal-stagger] > * { opacity: 0; transform: translateY(20px); transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); will-change: opacity, transform; }
[data-reveal-stagger].is-visible > *:nth-child(1)  { transition-delay: .00s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(2)  { transition-delay: .08s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(3)  { transition-delay: .16s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(4)  { transition-delay: .24s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(5)  { transition-delay: .32s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(6)  { transition-delay: .40s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(7)  { transition-delay: .48s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(8)  { transition-delay: .56s; opacity:1; transform:none }
[data-reveal-stagger].is-visible > *:nth-child(n+9){ transition-delay: .64s; opacity:1; transform:none }

/* — Auto-apply: każda sekcja H2 fade-up — */
.section h2.display,
.section-tight h2.display,
.didi-hero .display {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s cubic-bezier(.22,1,.36,1), transform 1s cubic-bezier(.22,1,.36,1);
  will-change: opacity, transform;
}
.section h2.display.is-visible,
.section-tight h2.display.is-visible,
.didi-hero .display.is-visible {
  opacity: 1; transform: none;
}

/* — Hero — pierwszy ekran widoczny od razu, ale z entrance — */
.didi-hero .eyebrow,
.didi-hero p,
.didi-hero .stat-num {
  animation: didiFadeUp .9s cubic-bezier(.22,1,.36,1) both;
}
.didi-hero .eyebrow      { animation-delay: .05s; }
.didi-hero .display      { animation-delay: .15s; animation-name: didiFadeUp; opacity: 1; transform: none; }
.didi-hero p             { animation-delay: .35s; }
.didi-hero [class*="stat"] { animation-delay: .55s; }

@keyframes didiFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}

/* — Hero rotator — kenburns slow zoom — */
.didi-hero-slide.is-active {
  animation: didiKenburns 12s cubic-bezier(.4,0,.2,1) both;
}
@keyframes didiKenburns {
  from { transform: scale(1.04); }
  to   { transform: scale(1.08); }
}

/* — Card lift on hover — uniwersalny dla featured cards — */
.fleet-card, .atrakcja-card, .msc-card, article[style*="background:var(--bg-2)"] {
  transition: transform .4s cubic-bezier(.22,1,.36,1), border-color .3s ease, box-shadow .4s ease;
}
.fleet-card:hover, .atrakcja-card:hover, .msc-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 50px rgba(0,0,0,.35);
}

/* Image inside card — zoom subtle on hover */
.fleet-card .ph, .atrakcja-card .ph, .msc-card .ph {
  overflow: hidden;
}
.fleet-card .ph.has-image,
.atrakcja-card .ph.has-image,
.msc-card .ph.has-image {
  transition: background-size .8s cubic-bezier(.22,1,.36,1);
  background-size: 105%;
}
.fleet-card:hover .ph.has-image,
.atrakcja-card:hover .ph.has-image,
.msc-card:hover .ph.has-image {
  background-size: 115%;
}

/* — Buttons — micro-interaction — */
.btn { transition: background .2s ease, color .2s ease, border-color .2s ease, transform .15s ease; }
.btn:active { transform: scale(.97); }

/* Primary CTA — subtle pulse on idle (call attention) */
.btn-primary { position: relative; }
.btn-primary::after {
  content: "";
  position: absolute; inset: -1px;
  border-radius: inherit;
  background: var(--accent);
  opacity: 0;
  z-index: -1;
  transition: opacity .3s ease;
}
.btn-primary:hover::after { opacity: .25; filter: blur(12px); }

/* — Nav — links underline scale — */
.nav-link {
  position: relative;
  padding-bottom: 4px;
}
.nav-link::after {
  content: "";
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .35s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }

/* — Schedule rows hover — */
.schedule-row {
  transition: background .3s ease, padding-left .3s cubic-bezier(.22,1,.36,1);
}
.schedule-row:hover {
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent 70%);
  padding-left: 8px;
}

/* — Day tabs (schedule-table) — */
.didi-day-tab { transition: all .25s cubic-bezier(.22,1,.36,1); }
.didi-day-tab:hover:not(.is-active) {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

/* — Tabs (atrakcje miejscowości) — */
.didi-mst-tab { transition: all .25s cubic-bezier(.22,1,.36,1); }
.didi-mst-tab:hover:not(.is-active) {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

/* — Stat num — counter prep — */
[data-count] {
  font-variant-numeric: tabular-nums;
  display: inline-block;
}

/* — Page transitions — fade in on first paint — */
body { animation: didiBodyFade .5s ease-out both; }
@keyframes didiBodyFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* — Smooth scroll dla anchor links — */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-padding-top: 100px; /* żeby nie chowało się pod sticky header */ }
}

/* — Reduced motion respect — */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  body::before { display: none; }
}

/* — Scroll snap dla schedule-today rows — premium touch — */
.schedule-row { scroll-margin-top: 120px; }

/* — Section divider — fine line z opacity gradient — */
.section + .section,
.section-tight + .section,
.section + .section-tight {
  position: relative;
}
.section + .section::before,
.section-tight + .section::before,
.section + .section-tight::before {
  content: "";
  position: absolute; top: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%; max-width: 800px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 30%, var(--border) 70%, transparent);
  opacity: .5;
}

/* — Booking card — entrance animation when modal opens — */
#didi-buy-modal[style*="display:flex"] .didi-buy-modal-inner {
  animation: didiModalIn .4s cubic-bezier(.22,1,.36,1) both;
}
@keyframes didiModalIn {
  from { opacity: 0; transform: translateY(20px) scale(.96); }
  to   { opacity: 1; transform: none; }
}

/* — Loading dots dla async actions — */
.didi-loading::after {
  content: "…";
  display: inline-block;
  animation: didiDots 1.4s infinite;
}
@keyframes didiDots {
  0%, 20%   { opacity: .2; }
  50%       { opacity: 1; }
  100%      { opacity: .2; }
}

/* — Atrakcja card image — Ken Burns hover — */
.msc-card .ph,
.atrakcja-card .ph,
.fleet-card .ph {
  background-position: center;
}

/* — Scroll-driven hero parallax — bg moves slower than scroll — */
.didi-hero .ph.has-image,
.didi-hero-rotator {
  will-change: transform;
}

/* — Underline link na headlines tekstowych w content — */
.didi-atrakcja-content a,
.section p a {
  background-image: linear-gradient(currentColor, currentColor);
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 100% 1px;
  transition: background-size .3s ease;
}
.didi-atrakcja-content a:hover,
.section p a:hover {
  background-size: 100% 2px;
}

/* — Number counter visual (hero stats) — */
.didi-hero .stat-num {
  font-feature-settings: "tnum", "lnum", "ss01";
}