/* ========================================================================
   Variables
   ======================================================================== */
:root {
  /* Color Palette - High-tech Gadgets Store */
  --color-background: #050509; /* near-black, matte */
  --color-surface: #0f1014; /* cards / surfaces */
  --color-surface-alt: #181a20;
  --color-text: #f5f7ff;
  --color-text-muted: #a3a7b7;

  --color-primary: #1e90ff; /* electric blue */
  --color-primary-soft: rgba(30, 144, 255, 0.1);
  --color-accent: #2bff88; /* neon green */

  --color-success: #22c55e;
  --color-warning: #facc15;
  --color-danger: #ef4444;

  /* Neutral Grays (Graphite) */
  --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: "Inter", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, 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: 1.6;
  --line-height-relaxed: 1.8;

  /* 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-pill: 999px;

  /* Shadows - subtle, techy, not heavy */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.55);
  --shadow-focus: 0 0 0 1px rgba(30, 144, 255, 0.8),
    0 0 0 4px rgba(30, 144, 255, 0.3);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 200ms ease-out;
  --transition-slow: 320ms ease-out;

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

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


/* ========================================================================
   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,
ul,
ol,
dl {
  margin: 0;
}

ul,
ol {
  padding-left: 1.5rem;
}

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

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

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

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

/* Remove default focus outline; we'll re-add custom focus-visible */
:focus {
  outline: none;
}


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

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  background: radial-gradient(circle at top left, #131626 0, #050509 55%, #000 100%);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: block;
}

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(1.75rem, 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-md);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

strong,
b {
  font-weight: 600;
}

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

hr {
  border: none;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  margin: var(--space-6) 0;
}

/* Links - subtle, with tech accent on hover */
a {
  position: relative;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

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

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15em;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

a:hover::after {
  transform: scaleX(1);
}


/* ========================================================================
   Accessibility & Motion
   ======================================================================== */

:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-md);
}

button:focus-visible,
[role="button"]:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

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


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

/* Layout containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-x);
  padding-right: var(--container-padding-x);
}

.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.section--dense {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

/* Flex helpers */
.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-col {
  display: flex;
  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;
}

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

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

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

/* Grid helpers */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

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

/* Positioning */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

/* 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;
}

/* Spacing utilities (commonly used) */
.mt-4 {
  margin-top: var(--space-4);
}

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

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

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

.py-4 {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.py-6 {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.px-4 {
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

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

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

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

/* Accent borders for subtle separation */
.border-top-soft {
  border-top: 1px solid rgba(148, 163, 184, 0.14);
}


/* ========================================================================
   Components - Buttons, Inputs, Cards
   ======================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  background: linear-gradient(135deg, #1e90ff, #2bff88);
  color: #020617!important;
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.9), var(--shadow-sm);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    filter var(--transition-fast),
    background var(--transition-normal),
    border-color var(--transition-fast);
}

.btn:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.3), var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
  filter: brightness(0.98);
  box-shadow: var(--shadow-xs);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Button variants */
.btn--ghost {
  background: rgba(15, 23, 42, 0.8);
  color: var(--color-text)!important;
  border-color: rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-xs);
}

.btn--ghost:hover {
  background: rgba(30, 64, 175, 0.4);
  border-color: rgba(59, 130, 246, 0.9);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary)!important;
  border-color: rgba(59, 130, 246, 0.8);
  box-shadow: none;
}

.btn--outline:hover {
  background: rgba(37, 99, 235, 0.16);
}

.btn--icon-only {
  padding: 0.5rem;
  border-radius: 999px;
}

/* Inputs */
.input,
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

.input::placeholder,
textarea::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

.input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: rgba(59, 130, 246, 0.9);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.9),
    0 0 0 4px rgba(37, 99, 235, 0.3);
  transform: translateY(-1px);
}

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

.label {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.field-hint {
  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 */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top left, rgba(46, 134, 222, 0.12), transparent 55%),
    radial-gradient(circle at bottom right, rgba(43, 255, 136, 0.06), transparent 55%),
    var(--color-surface);
  padding: var(--space-5);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal),
    background var(--transition-normal);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(30, 144, 255, 0.16),
    transparent 40%,
    rgba(43, 255, 136, 0.12)
  );
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(129, 140, 248, 0.4);
}

.card:hover::before {
  opacity: 1;
}

.card-header {
  margin-bottom: var(--space-4);
}

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

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(148, 163, 184, 0.18);
}

/* Tag / pill, useful for product labels (e.g., "Nowość", "Bestseller") */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text-muted);
}

.badge--primary {
  border-color: rgba(59, 130, 246, 0.9);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
}

.badge--accent {
  border-color: rgba(43, 255, 136, 0.9);
  background: rgba(43, 255, 136, 0.1);
  color: var(--color-accent);
}

/* Price emphasis */
.price {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.price--muted {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-decoration: line-through;
}

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

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

/* Minimal top nav background helper */
.nav-shell {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(5, 5, 9, 0.95),
    rgba(5, 5, 9, 0.8),
    transparent
  );
  border-bottom: 1px solid rgba(15, 23, 42, 0.9);
}


/* ========================================================================
   End base.css
   ======================================================================== */