/* =========================================================
   Variables
   ========================================================= */
:root {
  /* Color Palette - Pastel, cozy, child-friendly */
  --color-background: #fdfbf9;
  --color-surface: #ffffff;
  --color-surface-soft: #fff7f1;
  --color-text: #2b2b33;
  --color-text-muted: #70707a;

  --color-primary: #8cc6ff;        /* pastel blue */
  --color-primary-soft: #e2f1ff;
  --color-primary-strong: #4a9cf0;

  --color-accent-pink: #ffb7d5;    /* soft pink */
  --color-accent-yellow: #ffe9a9;  /* gentle yellow */
  --color-accent-beige: #f5e3cf;   /* warm beige */

  --color-success: #7fd1ae;
  --color-warning: #ffcf6b;
  --color-danger: #ff7a88;

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

  /* Typography */
  --font-sans: "Nunito", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-rounded: "Baloo 2", "Nunito", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-md: 1.0625rem; /* 17px */
  --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, in 4px steps) */
  --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-11: 2.75rem;  /* 44px */
  --space-12: 3rem;     /* 48px */
  --space-14: 3.5rem;   /* 56px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* Radius - soft, rounded, kid-friendly */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --radius-card: 18px;

  /* Shadows - soft, subtle elevation */
  --shadow-xs: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 14px 40px rgba(15, 23, 42, 0.1);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 180ms ease-out;
  --transition-slow: 220ms ease-out;

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

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

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

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

body {
  margin: 0;
}

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

ul, ol {
  padding-left: var(--space-5);
}

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

img {
  height: auto;
}

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

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

textarea {
  resize: vertical;
}

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

[hidden] {
  display: none !important;
}

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

/* Respect prefers-reduced-motion globally */
@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;
  }
}

/* =========================================================
   Base Styles
   ========================================================= */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  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;
}

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

h1 { font-size: var(--font-size-4xl); margin-bottom: var(--space-4); }
h2 { font-size: var(--font-size-3xl); margin-bottom: var(--space-4); }
h3 { font-size: var(--font-size-2xl); margin-bottom: var(--space-3); }
h4 { font-size: var(--font-size-xl);  margin-bottom: var(--space-3); }
h5 { font-size: var(--font-size-lg);  margin-bottom: var(--space-2); }
h6 { font-size: var(--font-size-base); margin-bottom: var(--space-2); }

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

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

strong {
  font-weight: 700;
}

a {
  color: var(--color-primary-strong);
  text-decoration: none;
  transition: color var(--transition-fast),
              background-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

hr {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: var(--space-6) 0;
}

/* =========================================================
   Accessibility & Focus
   ========================================================= */
:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 3px;
}

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

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

/* 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;
}

.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 */
.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-5);
}

@media (max-width: 767px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

.mt-0 { margin-top: 0; }
.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-left: var(--space-3); padding-right: var(--space-3); }
.px-md { padding-left: var(--space-4); padding-right: var(--space-4); }
.py-sm { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-md { padding-top: var(--space-4); padding-bottom: var(--space-4); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-pill { border-radius: var(--radius-pill); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }

.bg-surface { background-color: var(--color-surface); }
.bg-soft { background-color: var(--color-surface-soft); }

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

/* Buttons */
.button,
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
  font-family: var(--font-rounded);
  font-weight: 600;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-pill);
  padding: 0.7rem 1.6rem;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-normal),
              color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-fast);
}

.button-primary,
button.button-primary,
input[type="submit"].button-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-pink) 100%);
  color: #fff!important;
  box-shadow: var(--shadow-sm);
}

.button-primary:hover,
button.button-primary:hover,
input[type="submit"].button-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.button-primary:active,
button.button-primary:active,
input[type="submit"].button-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.button-outline {
  background-color: transparent;
  color: var(--color-primary-strong);
  border: 1px solid var(--color-primary);
}

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

.button-ghost {
  background-color: rgba(255, 255, 255, 0.7);
  color: var(--color-text);
}

.button-ghost:hover {
  background-color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.button:disabled,
button:disabled,
input[type="button"]:disabled,
input[type="submit"]:disabled,
input[type="reset"]:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

.button:focus-visible,
button:focus-visible,
input[type="button"]:focus-visible,
input[type="submit"]:focus-visible,
input[type="reset"]:focus-visible {
  outline: 2px solid var(--color-accent-yellow);
  outline-offset: 3px;
}

/* Form inputs */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
input[type="search"],
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  background-color: #fff;
  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);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-gray-400);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(140, 198, 255, 0.35);
}

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

.field-label {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.field-helper {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Card - for products, recommendations, etc. */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  overflow: hidden;
  transition: box-shadow var(--transition-normal),
              transform var(--transition-fast),
              background-color var(--transition-normal);
}

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

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

.card-title {
  font-family: var(--font-rounded);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-1);
  color: var(--color-text);
}

.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-muted);
}

.card-actions {
  margin-top: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

/* Badge - e.g., for promos, bestsellers, wishlists */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  background-color: var(--color-accent-yellow);
  color: var(--color-text);
}

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

/* Tag for filters or categories */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-gray-100);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.tag--active {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
}

/* =========================================================
   Helpers for E-commerce Feel
   ========================================================= */

.price {
  font-family: var(--font-rounded);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.price-old {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  text-decoration: line-through;
}

.price-saving {
  font-size: var(--font-size-xs);
  color: var(--color-success);
  font-weight: 600;
}

.rating {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-accent-yellow);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}