/* ========================================
   Variables
   ======================================== */
:root {
  /* Color scheme */
  color-scheme: light dark;

  /* Brand & UI colors */
  --color-background: #ffffff;
  --color-surface: #ffffff;
  --color-muted: #f8fafc;
  --color-text: #111827;
  --color-border: #e5e7eb;

  --color-primary: #2563eb; /* blue-600 */
  --color-primary-hover: #1d4ed8; /* blue-700 */
  --color-primary-active: #1e40af; /* blue-800 - used for active/pressed state */
  --color-primary-contrast: #ffffff;

  --color-success: #16a34a; /* green-600 */
  --color-success-hover: #15803d; /* green-700 */
  --color-warning: #d97706; /* amber-600 */
  --color-warning-hover: #b45309; /* amber-700 */
  --color-danger: #dc2626; /* red-600 */
  --color-danger-hover: #b91c1c; /* red-700 */

  /* 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: #1f2937;
  --gray-900: #111827;

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

  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-lg: 18px;
  --fs-xl: 20px;
  --fs-2xl: 24px;
  --fs-3xl: 30px;
  --fs-4xl: 36px;
  --fs-5xl: 48px;

  --lh-tight: 1.2;
  --lh-normal: 1.6;
  --lh-loose: 1.8;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 2px;
  --space-2: 4px;
  --space-3: 8px;
  --space-4: 12px;
  --space-5: 16px;
  --space-6: 20px;
  --space-7: 24px;
  --space-8: 32px;
  --space-9: 40px;
  --space-10: 48px;
  --space-11: 56px;
  --space-12: 64px;
  --space-13: 72px;
  --space-14: 80px;
  --space-15: 96px;

  /* Radius */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows & focus ring */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.12);
  --focus-ring: 0 0 0 3px rgba(37, 99, 235, 0.35);

  /* Transitions */
  --ease-standard: cubic-bezier(0.2, 0.8, 0.2, 1);
  --duration-fast: 120ms;
  --duration-normal: 200ms;
  --duration-slow: 320ms;

  /* Layout */
  --container-max: 1200px;
}


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

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;
}

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

img, video {
  height: auto;
}

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

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

/* Improve text rendering */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ========================================
   Base
   ======================================== */
body {
  min-height: 100dvh;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  font-weight: 700;
  line-height: var(--lh-tight);
  text-wrap: balance;
}

h1 { font-size: clamp(32px, 5vw, var(--fs-5xl)); margin-block: var(--space-10) var(--space-6); }
H2 { font-size: clamp(24px, 3.5vw, var(--fs-4xl)); margin-block: var(--space-9) var(--space-5); }
h3 { font-size: clamp(20px, 2.5vw, var(--fs-3xl)); margin-block: var(--space-8) var(--space-4); }
h4 { font-size: var(--fs-2xl); margin-block: var(--space-7) var(--space-3); }
h5 { font-size: var(--fs-xl); margin-block: var(--space-6) var(--space-2); }
h6 { font-size: var(--fs-lg); margin-block: var(--space-5) var(--space-2); }

p {
  max-inline-size: 70ch;
  text-wrap: pretty;
  margin-block: 0 var(--space-7);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-normal) var(--ease-standard),
              text-underline-offset var(--duration-fast) var(--ease-standard);
}

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

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

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin-block: var(--space-10);
}

/* Media elements should not exceed container */
figure { margin: 0; }

/* ========================================
   Utilities
   ======================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-7);
}

@media (min-width: 480px) {
  .container { padding-inline: var(--space-8); }
}
@media (min-width: 1024px) {
  .container { padding-inline: var(--space-9); }
}

/* Layout helpers */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.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-xs { gap: var(--space-3); }
.gap-sm { gap: var(--space-5); }
.gap-md { gap: var(--space-7); }
.gap-lg { gap: var(--space-8); }
.grid-center { place-items: center; }

/* Responsive grid helpers for product listings */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-8);
}

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

.not-sr-only {
  position: static !important;
  width: auto !important;
  height: auto !important;
  padding: 0 !important;
  margin: 0 !important;
  overflow: visible !important;
  clip: auto !important;
  white-space: normal !important;
}

/* ========================================
   Components
   ======================================== */
/* Buttons */
.btn {
  --_btn-bg: var(--gray-100);
  --_btn-fg: var(--color-text);
  --_btn-bd: var(--color-border);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: calc(var(--space-5) - 2px) var(--space-8);
  border: 1px solid var(--_btn-bd);
  border-radius: var(--radius-md);
  background-color: var(--_btn-bg);
  color: var(--_btn-fg);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--duration-normal) var(--ease-standard),
              color var(--duration-normal) var(--ease-standard),
              border-color var(--duration-normal) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard);
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring), var(--shadow-sm);
}

/* Button variants */
.btn-primary {
  --_btn-bg: var(--color-primary);
  --_btn-fg: var(--color-primary-contrast);
  --_btn-bd: var(--color-primary);
}
.btn-primary:hover { background-color: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn-primary:active { background-color: var(--color-primary-active); border-color: var(--color-primary-active); }

/* For anchor primary buttons, make hover/active switch to background color
   with a primary-colored outline so the button is visually distinct but
   matches the requested background-style interaction. This only targets
   anchor elements (links) with both .btn and .btn-primary classes. */
a.btn.btn-primary:hover,
a.btn.btn-primary:focus-visible {
  background-color: var(--color-background);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

a.btn.btn-primary:active {
  background-color: var(--color-background);
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(0);
}

.btn-success {
  --_btn-bg: var(--color-success);
  --_btn-fg: #ffffff;
  --_btn-bd: var(--color-success);
}
.btn-success:hover { background-color: var(--color-success-hover); border-color: var(--color-success-hover); }

.btn-warning {
  --_btn-bg: var(--color-warning);
  --_btn-fg: #111827;
  --_btn-bd: var(--color-warning);
}
.btn-warning:hover { background-color: var(--color-warning-hover); border-color: var(--color-warning-hover); }

.btn-danger {
  --_btn-bg: var(--color-danger);
  --_btn-fg: #ffffff;
  --_btn-bd: var(--color-danger);
}
.btn-danger:hover { background-color: var(--color-danger-hover); border-color: var(--color-danger-hover); }

.btn-outline {
  --_btn-bg: transparent;
  --_btn-fg: var(--color-text);
  --_btn-bd: var(--color-border);
  background-color: transparent;
}
.btn-outline:hover { background-color: var(--gray-50); }

/* Inputs */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="month"],
input[type="week"],
select,
textarea,
.input {
  width: 100%;
  padding: calc(var(--space-5) - 2px) var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--duration-normal) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              background-color var(--duration-normal) var(--ease-standard);
}

input::placeholder,
textarea::placeholder { color: var(--gray-500); opacity: 1; }

input:focus,
select:focus,
textarea:focus,
.input:focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

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

/* Form field grouping */
.form-row { display: grid; gap: var(--space-6); }

/* Cards */
.card {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-8);
}
.card:hover { box-shadow: var(--shadow-md); transition: box-shadow var(--duration-normal) var(--ease-standard); }

.card-header { margin-bottom: var(--space-6); }
.card-body { margin-bottom: var(--space-6); }
.card-footer {
  margin-top: var(--space-6);
  display: flex;          /* keep footer a flex container */
  gap: var(--space-5);     /* match `.gap-sm` spacing by default */
  flex-wrap: wrap;        /* allow buttons to wrap on small widths */
  align-items: center;    /* keep buttons aligned vertically */
  justify-content: flex-start;
}

/* Ensure buttons inside card-footer don't force overflow */
.card-footer .btn {
  flex: 0 1 auto;   /* allow shrinking to avoid overflow */
  min-width: 0;     /* necessary for flex children to shrink correctly */
}

/* When buttons wrap, keep visual spacing between rows */
.card-footer { row-gap: var(--space-4); }

/* Badges (lightweight helpers for promos) */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  line-height: 1.2;
  border: 1px solid var(--color-border);
  background-color: var(--gray-50);
}

/* ========================================
   Accessibility
   ======================================== */
/* Strong, consistent focus for interactive elements */
a[href], button, input, select, textarea, summary, [role="button"], [tabindex]:not([tabindex="-1"]) {
  -webkit-tap-highlight-color: transparent;
}

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

/* Ensure links remain obvious when focused */
a:focus-visible { text-decoration: underline; text-underline-offset: 3px; }

/* ========================================
   Premium E‑commerce niceties
   ======================================== */
/* Subtle interactive elevation on hoverable elements */
.hover-elevate {
  transition: transform var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);
}
.hover-elevate:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* Price text helper */
.price { font-variant-numeric: tabular-nums; letter-spacing: 0.01em; }

/* Skeleton loader baseline */
.skeleton {
  position: relative;
  overflow: hidden;
  background: linear-gradient(90deg, var(--gray-100), var(--gray-50), var(--gray-100));
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.2s var(--ease-standard) infinite;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  .skeleton { animation: none; }
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ========================================
   Header & Footer styles
   ======================================== */

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.brand {
  font-weight: 800;
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--gray-900);
}

/* Brand logo sizing: default 120px, capped to 80px on smaller screens */
.brand .site-logo {
  width: 120px;
  height: auto;
  display: block;
}
@media (max-width: 700px) {
  .brand .site-logo {
    width: 80px;
  }
}
.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-md);
}
.menu-toggle .menu-icon {
  width: 18px;
  height: 12px;
  position: relative;
}
.menu-toggle .menu-icon::before,
.menu-toggle .menu-icon::after,
.menu-toggle .menu-icon span {
  content: "";
  display: block;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: absolute;
  left: 0; right: 0;
}
.menu-toggle .menu-icon::before { top: 0; }
.menu-toggle .menu-icon::after { bottom: 0; }
.menu-toggle .menu-icon span { top: 50%; transform: translateY(-50%); }

.primary-nav { position: relative; }
.nav-list { display: none; align-items: center; gap: var(--space-7); }
.nav-list a { color: var(--gray-800); font-weight: 600; }
.nav-list a:hover { color: var(--color-primary-hover); }

/* Desktop nav */
@media (min-width: 900px) {
  .menu-toggle { display: none; }
  .nav-list { display: inline-flex; }
}

/* Mobile nav opened */
.primary-nav.open .nav-list {
  display: grid;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
}
.primary-nav.open .nav-list li { padding: var(--space-3) var(--space-4); }

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
}
.skip-link:focus { left: 12px; top: 12px; z-index: 60; background: var(--color-primary); color: #fff; padding: 8px 12px; border-radius: var(--radius-sm); }

/* Footer */
.site-footer { margin-top: var(--space-12); padding-block: var(--space-10) var(--space-8); background: var(--color-surface); border-top: 1px solid var(--color-border); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: var(--space-9); }
.footer-nav ul, .footer-legal ul { display: grid; gap: 8px; }
.footer-bottom { margin-top: var(--space-8); border-top: 1px solid var(--color-border); padding-top: var(--space-6); color: var(--gray-600); }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr; } }

/* Cookie banner */
.cookie-consent {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  z-index: 70;
}
.cookie-inner { display: grid; grid-template-columns: 1fr auto; gap: var(--space-7); padding-block: var(--space-6); }
.cookie-actions { display: flex; gap: var(--space-4); align-items: center; }
@media (max-width: 700px) {
  .cookie-inner { grid-template-columns: 1fr; }
  .cookie-actions { justify-content: flex-start; }
}