/* =========================================================
   Szkoła Tańca Desperado — Gostyń
   Design system: czerń / czerwień / złoto
   ========================================================= */

:root {
  --c-black: #0a0a0b;
  --c-black-soft: #161618;
  --c-black-glass: rgba(10, 10, 11, 0.62);
  --c-cream: #f7f3ec;
  --c-cream-dim: #cfc9bd;
  --c-red: #cf2030;
  --c-red-dark: #7a1420;
  --c-red-glow: rgba(207, 32, 48, 0.45);
  --c-gold: #d4af37;
  --c-gold-light: #f0d778;

  --font-display: "Bebas Neue", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1200px;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 0.25s;
  --dur-med: 0.6s;
  --dur-slow: 1s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font: inherit; }
svg { display: block; }

body {
  background: var(--c-black);
  color: var(--c-cream);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Accessibility ---------- */
.skip-link {
  position: absolute;
  top: -60px;
  left: 1rem;
  background: var(--c-gold);
  color: var(--c-black);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 999;
  font-weight: 700;
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus { top: 1rem; }

:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
section { position: relative; }

.section-head {
  max-width: 640px;
  margin-bottom: 3rem;
}
.section-head.center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--c-gold);
}
.section-head.center .eyebrow::before { display: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.05;
  text-transform: uppercase;
}
h2 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h3 { font-size: clamp(1.4rem, 3vw, 1.9rem); }

.section-head p, .lede {
  font-size: 1.1rem;
  color: var(--c-cream-dim);
  margin-top: 1rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.9rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  will-change: transform;
}
.btn svg { width: 1.1em; height: 1.1em; flex-shrink: 0; }
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(-1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--c-red), var(--c-red-dark));
  color: #fff;
  box-shadow: 0 10px 30px -8px var(--c-red-glow);
}
.btn-primary:hover { box-shadow: 0 16px 40px -8px var(--c-red-glow); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(247, 243, 236, 0.35);
  color: var(--c-cream);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.14); border-color: var(--c-gold); }

.btn-gold {
  background: linear-gradient(135deg, var(--c-gold-light), var(--c-gold));
  color: var(--c-black);
}
.btn-gold:hover { box-shadow: 0 16px 40px -10px rgba(212, 175, 55, 0.55); }

.btn-block { width: 100%; justify-content: center; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: background var(--dur-fast) var(--ease), padding var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.site-header.is-scrolled {
  background: var(--c-black-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 0.75rem 0;
  box-shadow: 0 8px 30px -10px rgba(0, 0, 0, 0.6);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.brand img { height: 42px; width: auto; transition: height var(--dur-fast) var(--ease); }
.site-header.is-scrolled .brand img { height: 34px; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-desktop {
  display: none;
}
.nav-desktop ul { display: flex; gap: 2.2rem; }
.nav-desktop a {
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding-bottom: 4px;
}
.nav-desktop a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--c-gold);
  transition: width var(--dur-fast) var(--ease);
}
.nav-desktop a:hover::after { width: 100%; }

.header-cta { display: none; }

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  z-index: 101;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--c-cream);
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  position: fixed;
  inset: 0;
  background: var(--c-black);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.2rem;
  transform: translateX(100%);
  transition: transform var(--dur-med) var(--ease);
  z-index: 99;
}
.nav-mobile.is-open { transform: translateX(0); }
.nav-mobile a {
  font-family: var(--font-display);
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.nav-mobile .social-row { display: flex; gap: 1.5rem; margin-top: 1rem; }
.nav-mobile .social-row a {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border: 1px solid rgba(247,243,236,.3);
  border-radius: 50%;
}

@media (min-width: 900px) {
  .nav-desktop { display: block; }
  .header-cta { display: inline-flex; }
  .nav-toggle { display: none; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
}
.hero-slides {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.8s ease;
}
.hero-slide.is-active { opacity: 1; }
.hero-slide img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 25%;
  transform: scale(1.08);
  animation: heroPan 14s ease-in-out infinite alternate;
}
@keyframes heroPan {
  from { transform: scale(1.08) translate3d(0, 0, 0); }
  to   { transform: scale(1.14) translate3d(-1%, -1%, 0); }
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(0deg, rgba(10,10,11,.96) 0%, rgba(10,10,11,.55) 45%, rgba(10,10,11,.35) 70%, rgba(10,10,11,.75) 100%),
    linear-gradient(100deg, rgba(207,32,48,.28), transparent 55%);
}

.hero-content {
  position: relative;
  padding-block: 8rem 5rem;
  width: 100%;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--c-gold-light);
  background: rgba(212,175,55,.12);
  border: 1px solid rgba(212,175,55,.4);
  padding: .5rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: fadeUp .8s var(--ease) .2s forwards;
}
.hero h1 {
  font-size: clamp(2.6rem, 8vw, 5.6rem);
  max-width: 16ch;
  opacity: 0;
  animation: fadeUp 1s var(--ease) .4s forwards;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--c-gold-light), var(--c-red));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lede {
  max-width: 46ch;
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--c-cream-dim);
  margin-top: 1.4rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease) .6s forwards;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.4rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease) .8s forwards;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-cream-dim);
  opacity: 0;
  animation: fadeUp 1s var(--ease) 1.2s forwards;
}
.scroll-cue .line {
  width: 1px; height: 34px;
  background: linear-gradient(var(--c-gold), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  50.01% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

.hero-dots {
  position: absolute;
  right: 1.5rem;
  bottom: 2.2rem;
  display: none;
  flex-direction: column;
  gap: .6rem;
  z-index: 2;
}
.hero-dots button {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(247,243,236,.35);
  transition: background var(--dur-fast), transform var(--dur-fast);
}
.hero-dots button.is-active { background: var(--c-gold); transform: scale(1.4); }
@media (min-width: 700px) { .hero-dots { display: flex; } }

/* =========================================================
   REVEAL animation utility
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* =========================================================
   ABOUT
   ========================================================= */
.about {
  padding-block: 7rem;
  background: var(--c-black);
}
.about-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}
.about-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/5;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.6);
}
.about-media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.2s var(--ease);
}
.about-media:hover img { transform: scale(1.06); }
.about-media .frame {
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(212,175,55,.5);
  border-radius: calc(var(--radius-lg) - 14px);
  pointer-events: none;
}
.about-badge {
  position: absolute;
  left: -1.2rem;
  bottom: -1.2rem;
  background: linear-gradient(135deg, var(--c-red), var(--c-red-dark));
  color: #fff;
  padding: 1.2rem 1.4rem;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px -12px var(--c-red-glow);
  text-align: center;
  min-width: 128px;
}
.about-badge strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.1rem;
  line-height: 1;
}
.about-badge span { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; opacity: .85; }

.about-text p { color: var(--c-cream-dim); margin-top: 1.1rem; font-size: 1.05rem; }
.about-list {
  margin-top: 2rem;
  display: grid;
  gap: .9rem;
}
.about-list li {
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  font-weight: 600;
}
.about-list svg {
  flex-shrink: 0;
  width: 22px; height: 22px;
  color: var(--c-gold);
  margin-top: 2px;
}

@media (min-width: 900px) {
  .about-grid { grid-template-columns: 0.85fr 1fr; }
}

/* =========================================================
   FEATURES / DLACZEGO DESPERADO
   ========================================================= */
.features {
  padding-block: 7rem;
  background: linear-gradient(180deg, var(--c-black) 0%, var(--c-black-soft) 100%);
  position: relative;
}
.features-grid {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }

.feature-card {
  padding: 2.2rem 1.8rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(212,175,55,.5);
  background: rgba(255,255,255,.07);
}
.feature-icon {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212,175,55,.22), rgba(207,32,48,.22));
  margin-bottom: 1.4rem;
}
.feature-icon svg { width: 26px; height: 26px; color: var(--c-gold-light); }
.feature-card h3 { font-size: 1.3rem; margin-bottom: .6rem; }
.feature-card p { color: var(--c-cream-dim); font-size: .96rem; }

/* =========================================================
   SOCIAL
   ========================================================= */
.social { padding-block: 7rem; background: var(--c-black); position: relative; overflow: hidden; }
.social::before {
  content: "";
  position: absolute;
  top: -20%; right: -10%;
  width: 60vw; height: 60vw;
  background: radial-gradient(circle, var(--c-red-glow), transparent 70%);
  opacity: .5;
  pointer-events: none;
}
.social-cards {
  display: grid;
  gap: 1.4rem;
  grid-template-columns: 1fr;
  margin-bottom: 3rem;
}
@media (min-width: 800px) { .social-cards { grid-template-columns: 1fr 1fr; } }

.social-card {
  position: relative;
  padding: 2.6rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  transition: transform var(--dur-fast) var(--ease);
  isolation: isolate;
}
.social-card:hover { transform: translateY(-6px); }
.social-card.fb { background: linear-gradient(135deg, #1e2a52, #0a0a0b 65%); }
.social-card.ig { background: linear-gradient(135deg, #5a1f3d, #cf2030 45%, #d4af37 130%); }
.social-card .icon-wrap {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(255,255,255,.14);
  display: grid; place-items: center;
  margin-bottom: 1.6rem;
}
.social-card .icon-wrap svg { width: 32px; height: 32px; }
.social-card h3 { font-size: 1.7rem; margin-bottom: .5rem; }
.social-card p { color: rgba(247,243,236,.85); margin-bottom: 1.6rem; }
.social-card .handle { font-weight: 700; color: var(--c-gold-light); margin-bottom: .3rem; display: block; }

.feed-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .8rem;
}
@media (min-width: 640px) { .feed-strip { grid-template-columns: repeat(6, 1fr); } }
.feed-strip a {
  position: relative;
  aspect-ratio: 1/1;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.feed-strip img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-med) var(--ease); }
.feed-strip a:hover img { transform: scale(1.1); }
.feed-strip a::after {
  content: "";
  position: absolute; inset: 0;
  background: rgba(10,10,11,.15);
  transition: background var(--dur-fast);
}
.feed-strip a:hover::after { background: rgba(10,10,11,0); }

/* =========================================================
   CONTACT
   ========================================================= */
.contact { padding-block: 7rem; background: var(--c-black-soft); }
.contact-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1.2fr; } }

.contact-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 2.4rem;
}
.contact-row {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding-block: 1.1rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.contact-row:last-of-type { border-bottom: none; }
.contact-row svg { width: 24px; height: 24px; color: var(--c-gold); flex-shrink: 0; margin-top: 2px; }
.contact-row strong { display: block; margin-bottom: .2rem; }
.contact-row a, .contact-row p { color: var(--c-cream-dim); }
.contact-row a:hover { color: var(--c-gold-light); }

.contact-social { display: flex; gap: .8rem; margin-top: 1.6rem; }
.contact-social a {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,.15);
  font-weight: 700;
  font-size: .88rem;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.contact-social a:hover { border-color: var(--c-gold); background: rgba(212,175,55,.1); }
.contact-social svg { width: 18px; height: 18px; }

.map-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 340px;
  border: 1px solid rgba(255,255,255,.08);
  filter: grayscale(0.35) contrast(1.05);
}
.map-wrap iframe { width: 100%; height: 100%; min-height: 340px; border: 0; display: block; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background: var(--c-black); padding-block: 3.5rem 2rem; border-top: 1px solid rgba(255,255,255,.08); }
.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2.2rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand { display: flex; align-items: center; gap: .7rem; }
.footer-brand img { height: 38px; }
.footer-brand span { font-family: var(--font-display); font-size: 1.3rem; text-transform: uppercase; }
.footer-social { display: flex; gap: .8rem; }
.footer-social a {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.15);
  transition: border-color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast);
}
.footer-social a:hover { border-color: var(--c-gold); background: rgba(212,175,55,.1); transform: translateY(-3px); }
.footer-social svg { width: 19px; height: 19px; }

.footer-bottom {
  padding-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: .85rem;
  color: var(--c-cream-dim);
}
.footer-bottom a:hover { color: var(--c-gold-light); }

/* =========================================================
   Back to top
   ========================================================= */
.to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--c-gold);
  color: var(--c-black);
  display: grid; place-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur-fast), transform var(--dur-fast), visibility var(--dur-fast);
  z-index: 90;
  box-shadow: 0 10px 24px -8px rgba(0,0,0,.5);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top svg { width: 20px; height: 20px; }