/* ============================================================
   STYLE.CSS — Design system: zmienne, reset, typografia, layout
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap");

/* ---- Zmienne ---- */
:root {
  /* Kolory */
  --color-dark: #0d1117;
  --color-slate: #1e293b;
  --color-slate-soft: #334155;
  --color-blue: #2563eb;
  --color-blue-hover: #1d4ed8;
  --color-blue-light: #dbeafe;
  --color-orange: #f97316;
  --color-orange-hover: #ea6c08;
  --color-bg: #ffffff;
  --color-bg-light: #f8fafc;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;

  /* Kompatybilność wsteczna */
  --primary-color: #f8fafc;
  --secondary-color: #64748b;
  --accent-color: #2563eb;
  --text-color: #1e293b;
  --bg-color: #ffffff;

  /* Typografia */
  --font: "Inter", "Arial", sans-serif;
  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;
  --font-4xl: 2.25rem;
  --font-5xl: 3rem;
  --font-6xl: 3.75rem;

  /* Layout */
  --container-max: 1200px;
  --section-padding: 3rem 1.5rem;

  /* Zaokrąglenia */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Cienie */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);

  /* Przejścia */
  --transition: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

/* ---- Kontener ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Sekcja — przewijanie ---- */
section {
  scroll-margin-top: 68px;
}

/* ---- Nagłówki sekcji ---- */
.section-label {
  display: inline-block;
  font-size: var(--font-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: var(--font-4xl);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: var(--font-lg);
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

/* ---- Przyciski ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-size: var(--font-base);
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-orange);
  color: #fff;
  border-color: var(--color-orange);
}
.btn-primary:hover {
  background: var(--color-orange-hover);
  border-color: var(--color-orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
}

.btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-blue);
  border-color: var(--color-blue);
}
.btn-outline:hover {
  background: var(--color-blue);
  color: #fff;
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}
.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  transform: translateY(-2px);
}

/* ---- Header — globalny ---- */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
  padding: 0 2rem;
  height: 68px;
  display: flex;
  align-items: center;
}

/* ---- Responsive — globalne ---- */
@media (max-width: 1024px) {
  .section-title {
    font-size: var(--font-3xl);
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: var(--font-2xl);
  }
  .section-subtitle {
    font-size: var(--font-base);
  }
  header {
    padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: var(--font-sm);
  }
}