/* ==========================================================================
   Variables
   ========================================================================== */
:root {
  /* Color Palette - Warm, Soft, Playful */
  --color-background: #faf7f2; /* soft beige */
  --color-surface: #ffffff; /* clean white */
  --color-text: #2f2721; /* warm dark brown */
  --color-text-muted: #7a6a5d; /* softer brown */

  --color-primary: #7ab3d8; /* pastel blue */
  --color-primary-soft: #e2f0f8;
  --color-primary-strong: #4f95c1;

  --color-success: #6cae75; /* muted green */
  --color-success-soft: #e0f3e3;

  --color-warning: #f1c27d; /* warm, soft amber */
  --color-warning-soft: #fff3e0;

  --color-danger: #d96b6b; /* soft red */
  --color-danger-soft: #fde5e5;

  /* Neutral Grays (warm tone) */
  --gray-50: #f9f5f1;
  --gray-100: #f0e6dd;
  --gray-200: #e1d4c7;
  --gray-300: #d1c2b3;
  --gray-400: #b9a694;
  --gray-500: #9a856d;
  --gray-600: #7c6a57;
  --gray-700: #5f4f40;
  --gray-800: #44362c;
  --gray-900: #2b221c;

  /* 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-heading: "Poppins", var(--font-sans);

  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 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-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing Scale (px) */
  --space-0: 0;
  --space-1: 2px;
  --space-2: 4px;
  --space-3: 6px;
  --space-4: 8px;
  --space-6: 12px;
  --space-8: 16px;
  --space-10: 20px;
  --space-12: 24px;
  --space-16: 32px;
  --space-20: 40px;
  --space-24: 48px;
  --space-32: 64px;
  --space-40: 80px;
  --space-48: 96px;

  /* Radius */
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Shadows (soft, cozy) */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 4px 10px rgba(36, 24, 16, 0.08);
  --shadow-md: 0 10px 25px rgba(36, 24, 16, 0.12);

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

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

  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   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;
}

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

img {
  height: auto;
}

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

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

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

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

/* ==========================================================================
   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;
}

/* Headings: clean, friendly, slightly playful */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  font-weight: 600;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(2rem, 3vw, var(--font-size-4xl));
  margin-bottom: var(--space-16);
}

h2 {
  font-size: clamp(1.75rem, 2.5vw, var(--font-size-3xl));
  margin-bottom: var(--space-12);
}

h3 {
  font-size: clamp(1.5rem, 2.2vw, var(--font-size-2xl));
  margin-bottom: var(--space-10);
}

h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-8);
}

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-6);
}

h6 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
}

p {
  margin-bottom: var(--space-8);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

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

/* Links - gentle interaction */
a {
  position: relative;
  transition: color var(--transition-normal);
}

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

a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

a:not(.btn):hover::after,
a:not(.btn):focus-visible::after {
  transform: scaleX(1);
}

/* Lists */
ul,
ol {
  padding-left: 1.5rem;
  margin-bottom: var(--space-8);
}



/* Forms */
label {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

/* ==========================================================================
   Accessibility & Focus
   ========================================================================== */
:focus {
  outline: none;
}

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

/* 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;
}

/* ==========================================================================
   Layout Utilities
   ========================================================================== */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-16);
  padding-right: var(--space-16);
  max-width: 1120px;
}

@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
}

.section {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.section--alt {
  background-color: var(--gray-50);
}

/* 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;
}

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

.gap-sm {
  gap: var(--space-8);
}

.gap-md {
  gap: var(--space-12);
}

.gap-lg {
  gap: var(--space-20);
}

/* Grid Helpers */
.grid {
  display: grid;
  gap: var(--space-16);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-16);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Spacing Utilities (common) */
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-sm { margin-top: var(--space-8) !important; }
.mb-sm { margin-bottom: var(--space-8) !important; }
.mt-md { margin-top: var(--space-16) !important; }
.mb-md { margin-bottom: var(--space-16) !important; }
.mt-lg { margin-top: var(--space-24) !important; }
.mb-lg { margin-bottom: var(--space-24) !important; }

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

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

/* ==========================================================================
   Components
   ========================================================================== */
/* Buttons - playful and inviting */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: var(--font-size-sm);
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal),
    transform var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-success));
  color: #ffffff!important;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--gray-300);
  background-image: linear-gradient(135deg, rgba(122, 179, 216, 0.15), rgba(108, 174, 117, 0.1));
}

.btn-outline:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary-strong);
  padding-left: 0;
  padding-right: 0;
}

.btn-sm {
  padding: 0.4rem 1rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 0.8rem 1.7rem;
  font-size: var(--font-size-base);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.65;
  box-shadow: none;
}

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

/* Inputs & Form Controls */
.input,
select,
textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  box-shadow: var(--shadow-xs);
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    background-color var(--transition-normal);
}

.input::placeholder,
textarea::placeholder {
  color: var(--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(122, 179, 216, 0.25);
}

.input[aria-invalid="true"],
.input.is-invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(217, 107, 107, 0.18);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

/* Cards - puzzle product / content blocks */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);
  border: 1px solid rgba(255, 255, 255, 0.8);
  overflow: hidden;
  transition:
    box-shadow var(--transition-normal),
    transform var(--transition-normal),
    border-color var(--transition-normal),
    background-color var(--transition-normal);
}

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

.card-header {
  margin-bottom: var(--space-10);
}

.card-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
}

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

.card-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: -var(--space-16) -var(--space-16) var(--space-12);
}

.card-media img {
  width: 100%;
  display: block;
}

.card-footer {
  margin-top: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Badge / Tag (e.g., difficulty level) */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 500;
  background-color: var(--gray-100);
  color: var(--gray-700);
}

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

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

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

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

/* Helper backgrounds to echo brand palette */
.bg-beige {
  background-color: var(--color-background);
}

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

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

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

/* Muted text helper */
.text-muted {
  color: var(--color-text-muted);
}

/* Subtle divider */
.divider {
  width: 100%;
  height: 1px;
  border: 0;
  margin: var(--space-16) 0;
  background: linear-gradient(
    to right,
    transparent,
    rgba(0, 0, 0, 0.05),
    transparent
  );
}