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

:root {
  /* Colors */
  --color-background: #f7f5ff; /* pastel, calming background */
  --color-surface: #ffffff;
  --color-text: #1f2933;
  --color-text-muted: #6b7280;

  --color-primary: #8b7bff; /* soft lavender */
  --color-primary-soft: #ece9ff;
  --color-primary-strong: #6a5be0;

  --color-success: #65c3a5; /* minty green */
  --color-success-soft: #e3f7f1;

  --color-warning: #f6c77b; /* warm pastel orange */
  --color-warning-soft: #fff6e5;

  --color-danger: #f28b82; /* soft coral red */
  --color-danger-soft: #ffe7e5;

  /* 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: #1f2933;
  --gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --font-heading: "SF Pro Display", 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-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 (px converted to rem; base 16px) */
  --space-0: 0;
  --space-4: 0.25rem;  /* 4px */
  --space-8: 0.5rem;   /* 8px */
  --space-12: 0.75rem; /* 12px */
  --space-16: 1rem;    /* 16px */
  --space-20: 1.25rem; /* 20px */
  --space-24: 1.5rem;  /* 24px */
  --space-32: 2rem;    /* 32px */
  --space-40: 2.5rem;  /* 40px */
  --space-48: 3rem;    /* 48px */
  --space-64: 4rem;    /* 64px */
  --space-80: 5rem;    /* 80px */
  --space-96: 6rem;    /* 96px */

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;

  /* Shadows (soft, mindful) */
  --shadow-xs: 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 4px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);

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

  /* Layout */
  --container-max-width: 72rem; /* ~1152px */
}

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

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

html,
body {
  margin: 0;
  padding: 0;
}

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

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

ul,
ol {
  padding-left: 1.25rem;
}

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;
}

/* Remove default link styles (we'll re-add base ones below) */
a {
  color: inherit;
  text-decoration: none;
}

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

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

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

/* Headings - soft hierarchy for mindful content */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-snug);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 3vw + 1rem, 3rem);
  margin-bottom: var(--space-24);
}

h2 {
  font-size: clamp(1.8rem, 2.4vw + 0.5rem, 2.25rem);
  margin-top: var(--space-40);
  margin-bottom: var(--space-16);
}

h3 {
  font-size: clamp(1.4rem, 1.6vw + 0.5rem, 1.75rem);
  margin-top: var(--space-32);
  margin-bottom: var(--space-12);
}

h4 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-24);
  margin-bottom: var(--space-8);
}

p {
  margin-bottom: var(--space-16);
  max-width: 70ch; /* comfortable line length */
  color: var(--color-text-muted);
}

p.lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}

strong {
  font-weight: 600;
}

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

/* Links - subtle yet clear */

a {
  color: var(--color-primary-strong);
  text-decoration: none;
  transition: color var(--transition-normal),
              text-decoration-color var(--transition-normal);
  text-decoration-color: rgba(139, 123, 255, 0.4);
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 2px;
}

hr {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: var(--space-32) 0;
}

/* Lists spacing */

ul,
ol {
  margin-top: 0;
  margin-bottom: var(--space-16);
}

li + li {
  margin-top: 0.25em;
}

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

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

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

/* Layout container */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-24);
    padding-right: var(--space-24);
  }
}

/* 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-column {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

.gap-16 {
  gap: var(--space-16);
}

.gap-24 {
  gap: var(--space-24);
}

.gap-32 {
  gap: var(--space-32);
}

/* Grid helpers */

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--space-24);
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--space-24);
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Spacing utilities (common ones for layout) */

.mt-24 { margin-top: var(--space-24); }
.mt-32 { margin-top: var(--space-32); }
.mt-40 { margin-top: var(--space-40); }
.mt-64 { margin-top: var(--space-64); }

.mb-0  { margin-bottom: 0; }
.mb-16 { margin-bottom: var(--space-16); }
.mb-24 { margin-bottom: var(--space-24); }
.mb-32 { margin-bottom: var(--space-32); }

.pt-40 { padding-top: var(--space-40); }
.pb-40 { padding-bottom: var(--space-40); }
.pt-64 { padding-top: var(--space-64); }
.pb-64 { padding-bottom: var(--space-64); }

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

/* 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;
}

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

/* Buttons - soft, rounded, mindful */

.button,
button,
input[type="submit"],
input[type="button"],
input[type="reset"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-pill);
  border: none;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition:
    background-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast),
    color var(--transition-normal);
}

.button--ghost {
  background-color: transparent;
  color: var(--color-primary-strong);
  box-shadow: none;
  border: 1px solid rgba(139, 123, 255, 0.35);
}

.button--secondary {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
  box-shadow: var(--shadow-xs);
}

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

.button--ghost:hover {
  background-color: rgba(139, 123, 255, 0.06);
}

.button--secondary:hover {
  background-color: var(--color-primary-soft);
  box-shadow: var(--shadow-sm);
}

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

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

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

/* Inputs & form controls */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="url"],
textarea,
select {
  width: 100%;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  background-color: #ffffff;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  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,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(139, 123, 255, 0.25), var(--shadow-xs);
}

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

fieldset {
  border: 0;
  padding: 0;
  margin: 0;
}

label {
  display: inline-block;
  margin-bottom: 0.4rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

/* Cards - for sections like daily challenges, benefits, FAQ */

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  box-shadow: var(--shadow-sm);
}

.card--soft {
  background: radial-gradient(circle at top left, #ece9ff 0, #ffffff 40%);
}

.card--muted {
  background-color: var(--gray-50);
  box-shadow: var(--shadow-xs);
}

.card + .card {
  margin-top: var(--space-16);
}

.card__header {
  margin-bottom: var(--space-12);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: 0.25rem;
}

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

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

/* Tag / pill component for categories like "Mindfulness", "Logic" */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.tag--success {
  background-color: var(--color-success-soft);
  color: #256f5b;
}

.tag--warning {
  background-color: var(--color-warning-soft);
  color: #8a5c1a;
}

/* Hero media wrapper for game screenshots / videos */

.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: 1.75rem;
  background: radial-gradient(circle at top, #ece9ff 0, #ffffff 55%);
  box-shadow: var(--shadow-md);
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: auto;
}

/* Helper for sections (relaxed vertical rhythm) */

.section {
  padding-top: var(--space-64);
  padding-bottom: var(--space-64);
}

.section--soft {
  background: linear-gradient(180deg, #f7f5ff 0%, #ffffff 60%, #f7f5ff 100%);
}

.section--muted {
  background-color: #f3f4ff;
}

/* End of base.css */