/* ========================================
   Variables
   ======================================== */
:root {
  /* Color Palette */
  --color-bg: #05060a; /* deep graphite/ink */
  --color-surface: #0f1117;
  --color-surface-alt: #141721;
  --color-text: #f5f7ff;
  --color-text-soft: #c4c7d5;
  --color-text-muted: #9093a3;
  --color-border-subtle: #232635;

  --color-primary: #2f7bff; /* electric blue */
  --color-primary-soft: rgba(47, 123, 255, 0.12);
  --color-primary-strong: #1c5adb;

  --color-success: #21c980;
  --color-success-soft: rgba(33, 201, 128, 0.16);
  --color-warning: #ffb545;
  --color-warning-soft: rgba(255, 181, 69, 0.2);
  --color-danger: #ff4d6a;
  --color-danger-soft: rgba(255, 77, 106, 0.18);

  --color-gray-50: #f8fafc;
  --color-gray-100: #eef2f7;
  --color-gray-200: #dde3ee;
  --color-gray-300: #c4c9d7;
  --color-gray-400: #9da3b5;
  --color-gray-500: #6d7285;
  --color-gray-600: #4b4f61;
  --color-gray-700: #343749;
  --color-gray-800: #1f2232;
  --color-gray-900: #101221;

  /* Accent (subtle neon) */
  --color-accent: #38ffd9; /* teal/neo neon */
  --color-accent-soft: rgba(56, 255, 217, 0.14);

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 1rem;      /* 16px (base) */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-7: 1.75rem;  /* 28px */
  --space-8: 2rem;     /* 32px */
  --space-9: 2.25rem;  /* 36px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-full: 999px;

  /* Shadows (subtle, techy) */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 14px 35px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 0 1px rgba(47, 123, 255, 0.4), 0 0 32px rgba(47, 123, 255, 0.4);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 180ms ease-out;
  --transition-slow: 260ms ease-out;
}

/* ========================================
   Reset / Normalize
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote,
dl, dd {
  margin: 0;
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
  margin: 0;
  padding: 0;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  border: none;
  background: none;
  padding: 0;
}

textarea {
  resize: vertical;
}

:where(a) {
  text-decoration: none;
  color: inherit;
}

:where(table) {
  border-collapse: collapse;
  border-spacing: 0;
}

/* ========================================
   Base Styles
   ======================================== */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 650;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.25rem, 1.7rem + 1.5vw, 3rem);
  letter-spacing: 0.01em;
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.875rem, 1.5rem + 0.8vw, 2.25rem);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}

h4 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
}

h5 {
  font-size: 1.125rem;
  margin-bottom: var(--space-1);
}

h6 {
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

p {
  margin-bottom: var(--space-3);
  color: var(--color-text-soft);
}

p:last-child {
  margin-bottom: 0;
}

strong {
  font-weight: 600;
}

code, pre {
  font-family: var(--font-mono);
}

/* Polish content specifics (diacritics hint) */
body {
  font-feature-settings: "liga" 1, "kern" 1;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-primary-strong);
}

a:active {
  color: var(--color-accent);
}

/* ========================================
   Accessibility & Motion
   ======================================== */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ========================================
   Utilities
   ======================================== */
/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 1440px) {
  .container {
    max-width: 1320px;
  }
}

.flex {
  display: flex;
}

.flex-row {
  flex-direction: row;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

.text-right {
  text-align: right;
}

.w-full {
  width: 100%;
}

.max-w-full {
  max-width: 100%;
}

/* Spacing utilities (limited core set) */
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.pt-4 { padding-top: var(--space-4); }
.pb-4 { padding-bottom: var(--space-4); }
.p-4 { padding: var(--space-4); }

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========================================
   Components
   ======================================== */
/* Button */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #ffffff!important;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition:
    background var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.button:hover {
  background: linear-gradient(135deg, var(--color-primary-strong), #153b87);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.button:focus-visible {
  outline: none;
  box-shadow: var(--shadow-glow);
}

.button--secondary {
  background: transparent;
  color: var(--color-text-soft)!important;
  border-color: var(--color-border-subtle);
  box-shadow: none;
}

.button--secondary:hover {
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text)!important;
  border-color: var(--color-primary);
}

.button--ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-primary)!important;
  box-shadow: none;
}

.button--ghost:hover {
  background: var(--color-primary-soft);
}

.button[disabled],
.button:disabled,
.button[aria-disabled='true'] {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

/* Inputs */
.input,
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

.input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

.input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(47, 123, 255, 0.35);
}

.input[disabled],
select[disabled],
textarea[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.input--error {
  border-color: var(--color-danger);
}

.input--error:focus-visible {
  box-shadow: 0 0 0 1px rgba(255, 77, 106, 0.45);
}

/* Card */
.card {
  position: relative;
  background: radial-gradient(circle at top left, rgba(47, 123, 255, 0.12), transparent 55%),
              radial-gradient(circle at bottom right, rgba(56, 255, 217, 0.12), transparent 50%),
              var(--color-surface-alt);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card--flat {
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
}

.card__header {
  margin-bottom: var(--space-3);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}

.card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card__content {
  font-size: var(--font-size-sm);
}

/* Product imagery helper (hero shots) */
.product-media {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: radial-gradient(circle at 20% 0, rgba(47, 123, 255, 0.3), transparent 60%),
              radial-gradient(circle at 80% 100%, rgba(56, 255, 217, 0.2), transparent 55%),
              #05060a;
}

.product-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Badge (e.g., "Nowość", "Promocja") */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.badge--accent {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.badge--danger {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}