/* ========================================================================== */
/* Variables                                                                  */
/* ========================================================================== */

:root {
  /* Color Palette - High-tech gadgets theme */
  --color-background: #050608;          /* Deep matte black */
  --color-surface: #111318;             /* Graphite panel */
  --color-surface-elevated: #171a21;    /* Elevated cards / nav */
  --color-text: #f5f7fb;                /* Primary text */
  --color-text-muted: #a3a8b8;          /* Secondary text */

  --color-primary: #1f6fff;             /* Electric blue */
  --color-primary-soft: rgba(31, 111, 255, 0.12);
  --color-primary-strong: #3a82ff;

  --color-accent: #31f989;              /* Neon green */
  --color-accent-soft: rgba(49, 249, 137, 0.15);

  --color-success: #31f989;
  --color-warning: #ffb321;
  --color-danger: #ff4f5e;

  /* Neutral Grays (cool, techy) */
  --gray-50: #f7f8fc;
  --gray-100: #e3e6f0;
  --gray-200: #c6cad9;
  --gray-300: #a3a8b8;
  --gray-400: #7b8193;
  --gray-500: #5a5f71;
  --gray-600: #3f4455;
  --gray-700: #2c3141;
  --gray-800: #1c202d;
  --gray-900: #111318;

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

  --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 */
  --font-size-5xl: 3rem;     /* 48px */

  --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-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: 18px;
  --radius-full: 999px;

  /* Shadows - subtle, modern glow */
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-soft-up: 0 -10px 30px rgba(0, 0, 0, 0.4);
  --shadow-strong: 0 18px 45px rgba(0, 0, 0, 0.6);
  --shadow-focus: 0 0 0 1px rgba(245, 247, 251, 0.4), 0 0 0 3px rgba(31, 111, 255, 0.65);

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

  /* Layout */
  --container-max-width: 1200px;
  --container-max-width-wide: 1440px;
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0s;
    --transition-normal: 0s;
    --transition-slow: 0s;
  }
}

/* ========================================================================== */
/* Reset / Normalize                                                          */
/* ========================================================================== */

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

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

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

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

body {
  min-height: 100vh;
  text-rendering: optimizeLegibility;
}

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

img {
  height: auto;
}

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

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

textarea {
  resize: vertical;
}

:focus-visible {
  outline: none;
}

/* ========================================================================== */
/* Base                                                                       */
/* ========================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  background-color: var(--color-background);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  min-height: 60vh;
}

::selection {
  background-color: rgba(49, 249, 137, 0.35);
  color: #ffffff;
}

/* Headings - modern, clear hierarchy */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  letter-spacing: 0.01em;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.25rem, 3vw, 3rem);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.875rem, 2.4vw, 2.25rem);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.5rem, 2vw, 1.875rem);
  margin-bottom: var(--space-3);
}

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

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-300);
  margin-bottom: var(--space-1);
}

p {
  margin-bottom: var(--space-4);
  color: var(--gray-100);
}

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

small {
  font-size: var(--font-size-sm);
}

strong {
  font-weight: 600;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  text-underline-offset: 0.15em;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast), opacity var(--transition-fast);
}

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

a:focus-visible {
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-xs);
}

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

hr {
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin: var(--space-6) 0;
}

/* ========================================================================== */
/* Accessibility                                                              */
/* ========================================================================== */

:focus-visible {
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-xs);
}

@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;
  }
}

/* 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;
}

/* ========================================================================== */
/* Utilities                                                                  */
/* ========================================================================== */

/* Layout containers */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container--wide {
  max-width: var(--container-max-width-wide);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-6);
  }
}

.section {
  padding-block: var(--space-8);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-12);
  }
}

/* Flex utilities */

.flex {
  display: flex;
}

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

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

.flex-column {
  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-xs { gap: var(--space-1); }
.gap-sm { gap: var(--space-2); }
.gap-md { gap: var(--space-3); }
.gap-lg { gap: var(--space-4); }
.gap-xl { gap: var(--space-6); }

/* Grid utilities */

.grid {
  display: grid;
}

.grid-auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
}

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

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

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

/* Alignment helpers */

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

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

.text-muted {
  color: var(--color-text-muted);
}

/* Simple spacing helpers (minimal set) */

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-sm { margin-top: var(--space-2); }
.mb-sm { margin-bottom: var(--space-2); }
.mt-md { margin-top: var(--space-4); }
.mb-md { margin-bottom: var(--space-4); }
.mt-lg { margin-top: var(--space-6); }
.mb-lg { margin-bottom: var(--space-6); }

.pt-sm { padding-top: var(--space-2); }
.pb-sm { padding-bottom: var(--space-2); }
.pt-md { padding-top: var(--space-4); }
.pb-md { padding-bottom: var(--space-4); }
.pt-lg { padding-top: var(--space-6); }
.pb-lg { padding-bottom: var(--space-6); }

/* Utility for subtle neon edge highlight on hoverable surfaces */

.hover-glow {
  transition: box-shadow var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal), background-color var(--transition-normal);
}

.hover-glow:hover {
  box-shadow: 0 0 0 1px rgba(49, 249, 137, 0.35), 0 18px 40px rgba(0, 0, 0, 0.8);
  transform: translateY(-2px);
}

/* ========================================================================== */
/* Components                                                                 */
/* ========================================================================== */

/* Buttons */

.button {
  --btn-bg: var(--color-primary);
  --btn-bg-hover: var(--color-primary-strong);
  --btn-color: #ffffff;
  --btn-border-color: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--btn-border-color);
  background: var(--btn-bg);
  color: var(--btn-color);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
}

.button--primary {
  --btn-bg: var(--color-primary);
  --btn-bg-hover: var(--color-primary-strong);
  color: #fff !important;
}

.button--accent {
  --btn-bg: var(--color-accent);
  --btn-bg-hover: #4bff9b;
  --btn-color: #050608;
}

.button--outline {
  --btn-bg: transparent;
  --btn-bg-hover: rgba(17, 19, 24, 0.9);
  --btn-border-color: rgba(163, 168, 184, 0.6);
  --btn-color: var(--gray-50);
}

.button--ghost {
  --btn-bg: transparent;
  --btn-bg-hover: rgba(31, 111, 255, 0.14);
  --btn-border-color: transparent;
  --btn-color: var(--color-text);
}

.button:hover {
  background-color: var(--btn-bg-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.55);
}

.button:active {
  transform: translateY(0);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}

.button:focus-visible {
  box-shadow: var(--shadow-focus);
}

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

.button--icon-only {
  padding-inline: 0.7rem;
}

/* Inputs & form controls */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.field__label {
  font-size: var(--font-size-sm);
  color: var(--gray-100);
}

.field__hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.field__error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

.input,
.select,
.textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(122, 129, 147, 0.45);
  background-color: rgba(11, 13, 18, 0.95);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), transform 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(163, 168, 184, 0.4), 0 0 0 2px rgba(31, 111, 255, 0.7);
}

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

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

.select {
  appearance: none;
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  background-size: 10px;
  background-image: linear-gradient(45deg, transparent 50%, var(--gray-200) 50%), linear-gradient(135deg, var(--gray-200) 50%, transparent 50%);
  background-position: calc(100% - 14px) 55%, calc(100% - 9px) 55%;
}

/* Card */

.card {
  background: radial-gradient(circle at top left, rgba(31, 111, 255, 0.06), transparent 55%),
              radial-gradient(circle at bottom right, rgba(49, 249, 137, 0.06), transparent 55%),
              var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(122, 129, 147, 0.25);
  padding: var(--space-4);
  box-shadow: var(--shadow-soft);
  color: var(--color-text);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal), background-color var(--transition-normal);
}

.card--hoverable:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-strong);
  border-color: rgba(49, 249, 137, 0.45);
}

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

.card__title {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-snug);
}

.card__body {
  font-size: var(--font-size-sm);
  color: var(--gray-100);
}

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

/* Tag / pill for statuses (e.g., "Dostawa 24h", "Nowość") */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid rgba(122, 129, 147, 0.6);
  color: var(--gray-100);
}

.badge--accent {
  border-color: rgba(49, 249, 137, 0.7);
  background-color: rgba(49, 249, 137, 0.08);
  color: var(--color-accent);
}

.badge--primary {
  border-color: rgba(31, 111, 255, 0.7);
  background-color: rgba(31, 111, 255, 0.08);
  color: var(--color-primary-strong);
}

/* Minimal top-level nav placeholder (for consistent base styling) */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background-color: rgba(5, 6, 8, 0.88);
  border-bottom: 1px solid rgba(122, 129, 147, 0.3);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.site-footer {
  border-top: 1px solid rgba(122, 129, 147, 0.3);
  padding-block: var(--space-6);
  background: linear-gradient(to top, #050608, #050608 60%, #080a10 100%);
}

.site-footer p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}