/* ==========================================================
   Variables
   ========================================================== */
:root {
  /* Color Palette - tailored for modern, trustworthy e‑commerce */
  --color-background: #f7f8fa;
  --color-surface: #ffffff;
  --color-surface-alt: #f0f2f5;

  --color-text: #111827; /* graphite black */
  --color-text-soft: #4b5563;
  --color-text-muted: #6b7280;

  --color-primary: #0050b3; /* deep blue */
  --color-primary-soft: #e6f0ff;
  --color-primary-dark: #003479;

  --color-accent: #ff7a1a; /* vibrant orange for CTAs */
  --color-accent-soft: #fff3e8;
  --color-accent-dark: #d95f05;

  --color-success: #16a34a;
  --color-warning: #eab308;
  --color-danger: #dc2626;

  --color-border-subtle: #e5e7eb;
  --color-border-strong: #d1d5db;

  /* Neutral grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;

  /* Font sizes (desktop base: 16px) */
  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 1rem;      /* 16px */
  --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 heights */
  --line-height-tight: 1.2;
  --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-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: 999px; /* pills, round buttons */

  /* Shadows - subtle for cards & product tiles */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 10px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 180ms ease-out;
  --transition-slow: 240ms ease-out;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding-x: 1.5rem;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

button,
input,
textarea,
select {
  margin: 0;
  font: inherit;
  color: inherit;
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

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

[hidden] {
  display: none !important;
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

main {
  min-height: 60vh;
}

/* Headings - clean, scalable hierarchy for product & category pages */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.875rem, 1.2rem + 1.5vw, 2.5rem);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.5rem, 1.1rem + 1vw, 2rem);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
}

h4 {
  font-size: 1.125rem;
}

h5 {
  font-size: 1rem;
}

h6 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

p {
  margin-bottom: var(--space-3);
  /* comfortable line length for Polish text blocks */
  color: var(--color-text-soft);
}

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

strong,
b {
  font-weight: 600;
}

/* Links - modern, no default underline, clear hover */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

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

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Lists */
ul,
ol {
  padding-left: 1.25rem;
}



/* Form elements base */
input,
textarea,
select {
  background-color: #ffffff;
}

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

.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;
}

/* ==========================================================
   Utilities
   ========================================================== */
/* Layout container for marketplace pages */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding-x);
}

/* Flex utilities */
.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

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

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

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

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

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

.gap-sm {
  gap: var(--space-3);
}

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

.gap-lg {
  gap: var(--space-6);
}

/* Grid utilities for product listing */
.grid {
  display: grid;
}

.grid-auto-fit-min-240 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}

/* Alignment */
.text-center {
  text-align: center;
}

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

/* Spacing utilities (limited to keep it lightweight) */
.mt-0 {
  margin-top: 0;
}

.mt-xs {
  margin-top: var(--space-2);
}

.mt-sm {
  margin-top: var(--space-3);
}

.mt-md {
  margin-top: var(--space-4);
}

.mt-lg {
  margin-top: var(--space-6);
}

.mb-0 {
  margin-bottom: 0;
}

.mb-xs {
  margin-bottom: var(--space-2);
}

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

.mb-md {
  margin-bottom: var(--space-4);
}

.mb-lg {
  margin-bottom: var(--space-6);
}

.px-sm {
  padding-inline: var(--space-3);
}

.py-sm {
  padding-block: var(--space-3);
}

.py-md {
  padding-block: var(--space-4);
}

/* Visibility */
.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

/* ==========================================================
   Components
   ========================================================== */
/* Buttons - primary for blue actions, accent for key CTAs (e.g. Kup teraz) */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.button-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

.button-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.button-accent {
  background-color: var(--color-accent);
  color: #111827;
  border-color: var(--color-accent-dark);
  box-shadow: var(--shadow-sm);
}

.button-accent:hover {
  background-color: var(--color-accent-dark);
  color: #f9fafb;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.button-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-border-subtle);
}

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

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

.button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Form inputs - consistent look for search, filters & checkout */
.input,
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  font-size: var(--font-size-sm);
  background-color: var(--color-surface);
  color: var(--color-text);
  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 var(--color-primary-soft);
}

.input[aria-invalid="true"],
.input.input-error {
  border-color: var(--color-danger);
}

.field-label {
  display: inline-block;
  margin-bottom: 0.25rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-soft);
}

.field-helper {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.field-error {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Card - base for product tiles, info boxes, recommendations */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-xs);
  padding: var(--space-4);
  transition: box-shadow var(--transition-fast),
    transform var(--transition-fast),
    border-color var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
}

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

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

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

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.card-footer {
  margin-top: var(--space-3);
}

/* Tag / pill - for promotions, availability, B2B labels */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xs);
  font-weight: 500;
  background-color: var(--gray-100);
  color: var(--color-text-soft);
}

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

.badge-success {
  background-color: #ecfdf3;
  color: var(--color-success);
}

/* Rating - lightweight base style for review stars */
.rating {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-accent);
}

.rating-value {
  color: var(--color-text-soft);
  font-weight: 500;
}

/* ==========================================================
   Helpers for Site-wide Sections
   ========================================================== */
.site-section {
  padding-block: var(--space-8);
}

.site-section-alt {
  padding-block: var(--space-8);
  background-color: var(--color-surface-alt);
}

.section-header {
  margin-bottom: var(--space-5);
}

.section-eyebrow {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.section-title {
  font-size: var(--font-size-3xl);
}

.section-description {
  margin-top: var(--space-2);
  color: var(--color-text-soft);
}

fieldset {
  border: none;
  margin: 0;
  padding: 0;
}