/* ===== Variables ===== */
:root {
  --bg: #0a0a0b;
  --bg-elevated: #121214;
  --surface: #1a1a1d;
  --text: #f0f0f2;
  --text-muted: #8a8a8f;
  --accent: #e63946;
  --accent-hover: #ff4757;
  --accent-muted: rgba(230, 57, 70, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
  --font-serif: "Instrument Serif", Georgia, serif;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Noise overlay */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: linear-gradient(to bottom, var(--bg) 0%, transparent 100%);
  transition: background var(--transition);
}

.header.scrolled {
  background: rgba(10, 10, 11, 0.9);
  backdrop-filter: blur(12px);
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo__img {
  display: block;
  height: 2.5rem;
  width: auto;
  border-radius: 6px;
}

.nav {
  display: flex;
  gap: var(--space-lg);
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-3xl) var(--space-lg) var(--space-2xl);
  position: relative;
  background-image: linear-gradient(120deg, var(--bg) 0%, rgba(10, 10, 11, 0.92) 35%, rgba(10, 10, 11, 0.75) 100%),
    url('assets/hero-bg.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 10, 11, 0.4) 0%, transparent 40%, rgba(10, 10, 11, 0.5) 100%);
  pointer-events: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero__label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 0.8s ease forwards;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 10vw, 6.5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
  max-width: 14ch;
}

.hero__title .line {
  display: block;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards;
}

.hero__title .line:nth-child(1) { animation-delay: 0.1s; }
.hero__title .line:nth-child(2) { animation-delay: 0.2s; }
.hero__title .line:nth-child(3) { animation-delay: 0.3s; }
.hero__title .line.accent {
  color: var(--accent);
  animation-delay: 0.4s;
}

.hero__desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 42ch;
  margin-bottom: var(--space-sm);
  opacity: 0;
  animation: fadeUp 0.7s ease 0.4s forwards;
}

.hero__stats {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
  opacity: 0;
  animation: fadeUp 0.7s ease 0.45s forwards;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: transform var(--transition), background var(--transition), color var(--transition);
  opacity: 0;
  animation: fadeUp 0.7s ease 0.5s forwards;
}

.cta--primary {
  background: var(--accent);
  color: #fff;
}

.cta--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.cta--secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.cta--secondary:hover {
  background: var(--bg-elevated);
  border-color: var(--accent);
  color: var(--accent);
}

.cta__icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.5; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ===== Sections ===== */
.section {
  padding: var(--space-3xl) 0;
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.section__subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: var(--space-xl);
  max-width: 50ch;
}

/* ===== Panel: Podsumowanie tygodnia ===== */
.section--weekly {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.weekly-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.weekly-panel::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.weekly-panel__header {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-sm);
}

.weekly-panel__badge {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.weekly-panel__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.weekly-panel__meta {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 60ch;
}

/* Bloki podsumowania (z zdjęciem lub bez) */
.weekly-summary {
  padding-left: var(--space-sm);
}

.weekly-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--border);
}

.weekly-block:last-of-type {
  border-bottom: none;
}

.weekly-block__content {
  min-width: 0;
}

.weekly-block__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-muted);
  border-radius: 6px;
  margin-bottom: var(--space-sm);
}

.weekly-block__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.weekly-block__content p {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.weekly-block__content p:last-child {
  margin-bottom: 0;
}

.weekly-block__img {
  margin: 0;
  order: -1;
}

.weekly-block__img img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
}

@media (min-width: 720px) {
  .weekly-block:not(.weekly-block--no-img) {
    grid-template-columns: 1fr 280px;
    align-items: start;
  }

  .weekly-block__img {
    order: 0;
    position: sticky;
    top: 5rem;
  }
}

.weekly-block--no-img .weekly-block__content {
  grid-column: 1;
}

/* Oś czasu */
.weekly-timeline {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding-left: var(--space-lg);
}

.weekly-timeline__title {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.weekly-timeline__list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
}

.weekly-timeline__list li {
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--border);
}

.weekly-timeline__list li:last-child {
  border-bottom: none;
}

.weekly-timeline__list strong {
  color: var(--accent);
  font-weight: 600;
  margin-right: 0.25em;
}

.weekly-panel__footer {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  padding-left: var(--space-sm);
}

.weekly-panel__link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.weekly-panel__link:hover {
  color: var(--accent-hover);
}

/* ===== Cards (Podsumowania) ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.cards--single {
  max-width: 420px;
  margin: 0 auto;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.card:hover {
  border-color: rgba(230, 57, 70, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.5);
}

.card--placeholder {
  opacity: 0.85;
}

.card__badge {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--accent-muted);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 6px;
  margin-bottom: var(--space-md);
}

.card__title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ===== CTA Section ===== */
.cta-section {
  text-align: center;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}

.cta-section .section__subtitle {
  margin-left: auto;
  margin-right: auto;
}

.cta-section .cta {
  margin-top: var(--space-md);
}

/* ===== Footer ===== */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}

.footer__copy {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .header {
    padding: var(--space-sm) var(--space-md);
  }

  .nav {
    gap: var(--space-md);
  }

  .hero {
    padding: var(--space-2xl) var(--space-md);
  }

  .hero__scroll {
    left: var(--space-md);
  }
}