/* Kamil Zieliński — trener personalny */
:root {
  --bg: #0a0a0b;
  --surface: #141416;
  --text: #fafafa;
  --muted: #a3a3a8;
  --accent: #22c55e;
  --accent-dim: rgba(34, 197, 94, 0.12);
  --danger: #ef4444;
  --border: rgba(255, 255, 255, 0.07);
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  opacity: 0;
  transition: opacity 0.45s var(--ease);
  padding-bottom: 3rem;
}

body.is-ready {
  opacity: 1;
}

a {
  color: inherit;
}

.container {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(10, 10, 11, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}

.brand {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand strong {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.brand span {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  cursor: pointer;
  color: var(--text);
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: color 0.2s ease;
}

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

@media (max-width: 768px) {
  body.nav-open {
    overflow: hidden;
  }

  body.nav-open::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 249;
    background-color: var(--bg);
    pointer-events: none;
  }

  .site-header {
    position: relative;
    z-index: 250;
    background: var(--bg);
    background-color: var(--bg);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .nav-toggle {
    display: flex;
    position: relative;
    z-index: 2;
  }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 64px;
    z-index: 1;
    flex-direction: column;
    padding: 2rem;
    box-sizing: border-box;
    min-height: calc(100vh - 64px);
    min-height: calc(100dvh - 64px);
    background: var(--bg);
    background-color: var(--bg);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    border-top: 1px solid var(--border);
    transform: translate3d(0, -110%, 0);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.35s var(--ease), opacity 0.2s ease, visibility 0.2s;
  }

  .site-nav.is-open {
    transform: translate3d(0, 0, 0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

.hero {
  padding: clamp(3rem, 9vw, 5.5rem) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, var(--accent-dim), transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

.reduce-motion .hero-badge::before {
  animation: none;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}

.hero h1 span {
  color: var(--accent);
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 42ch;
  margin-bottom: 1.75rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.75rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: transform 0.2s var(--ease), box-shadow 0.25s ease;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0b;
  box-shadow: 0 0 40px rgba(34, 197, 94, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-stat {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.hero-stat p {
  font-size: 0.9rem;
  color: var(--muted);
}

.hero-stat strong {
  display: block;
  font-size: 2rem;
  font-family: var(--font-display);
  letter-spacing: 0.06em;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.section {
  padding: clamp(3.5rem, 8vw, 5rem) 0;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.section-intro {
  color: var(--muted);
  max-width: 58ch;
  margin-bottom: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.25s ease;
}

.card:hover {
  border-color: rgba(34, 197, 94, 0.35);
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.92rem;
  color: var(--muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
}

.service {
  padding: 1.75rem;
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--surface), #101012);
  border: 1px solid var(--border);
}

.service h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.service p {
  font-size: 0.92rem;
  color: var(--muted);
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.quote {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--border);
}

.quote p {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: #e5e5e5;
}

.quote footer {
  font-size: 0.85rem;
  color: var(--muted);
}

.quote cite {
  font-style: normal;
  font-weight: 700;
  color: var(--accent);
}

.contact-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: clamp(2rem, 4vw, 2.75rem);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.contact-list a {
  display: block;
  margin-top: 0.5rem;
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.contact-list a:hover {
  text-decoration: underline;
}

.contact-form label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.contact-form button {
  width: 100%;
  padding: 1rem;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #0a0a0b;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.contact-form button:hover {
  filter: brightness(1.08);
}

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reduce-motion .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

.demo-strip {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0.55rem 1rem;
  text-align: center;
  font-size: 0.78rem;
  background: rgba(8, 8, 9, 0.94);
  border-top: 1px solid var(--border);
}

.demo-strip a {
  color: var(--muted);
  text-decoration: none;
}

.demo-strip a:hover {
  color: var(--accent);
}

.stats-strip {
  padding: 0 0 2rem;
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  padding: 1.5rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat-item {
  text-align: center;
}

.stat-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.85rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.stat-item span {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.35;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.section-dim {
  background: rgba(20, 20, 22, 0.6);
}

.check-list {
  list-style: none;
  max-width: 640px;
  margin: 0 auto 1rem;
}

.check-list li {
  padding: 0.6rem 0 0.6rem 1.75rem;
  position: relative;
  font-size: 0.95rem;
  color: var(--muted);
}

.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 800;
}

.section-note {
  text-align: center;
  font-size: 0.88rem;
  color: var(--muted);
  font-style: italic;
  max-width: 52ch;
  margin: 0 auto;
}

.process-list {
  list-style: none;
  max-width: 720px;
  margin: 0 auto;
}

.process-list li {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

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

.process-num {
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  opacity: 0.55;
  width: 2.5rem;
}

.process-list h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.process-list p {
  font-size: 0.92rem;
  color: var(--muted);
}

.container-narrow {
  max-width: 720px;
  margin: 0 auto;
}

.faq-list {
  margin-top: 1.25rem;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 0.6rem;
  background: var(--surface);
  overflow: hidden;
}

.faq-item summary {
  padding: 1rem 1.15rem;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  color: var(--accent);
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  padding: 0 1.15rem 1rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.site-footer-extended {
  text-align: left;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-brand {
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.footer-copy,
.footer-nip {
  font-size: 0.82rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: var(--accent);
}