/* ==========================================================================
   Zim Zam Labs — Design System: The Desert Archive
   Colors, typography, spacing, reset
   ========================================================================== */

/* --- Google Fonts loaded in HTML head --- */

/* --- CSS Custom Properties --- */
:root {
  /* Primary — Water Blue (from Abel's brand) */
  --color-primary: #0099CC;
  --color-primary-container: #00B8E6;
  --color-primary-accent: #00D9FF;
  --color-primary-dark: #007AA3;
  --color-on-primary: #FFFFFF;
  --color-primary-5: rgba(0, 153, 204, 0.05);
  --color-primary-10: rgba(0, 153, 204, 0.1);
  --color-primary-20: rgba(0, 153, 204, 0.2);

  /* Surface hierarchy — Desert parchment */
  --color-surface: #FEF9F1;
  --color-surface-container-low: #F8F3EB;
  --color-surface-container: #F2EDE5;
  --color-surface-container-high: #ECE8E0;
  --color-surface-container-highest: #E7E2DA;
  --color-surface-container-lowest: #FFFFFF;

  /* Text */
  --color-on-surface: #1D1C17;
  --color-on-surface-variant: #3E4946;

  /* Secondary — Sand */
  --color-secondary: #715B3A;
  --color-secondary-container: #FADBB2;
  --color-on-secondary-container: #765F3E;

  /* Utility */
  --color-outline: #6E7976;
  --color-outline-variant: #BEC9C5;
  --color-error: #BA1A1A;
  --color-error-container: #FFDAD6;

  /* Inverse (dark sections) */
  --color-inverse-surface: #1D1C17;
  --color-inverse-on-surface: #F5F0E8;

  /* Typography */
  --font-headline: 'Newsreader', serif;
  --font-body: 'Manrope', sans-serif;

  /* Fluid typography — clamp(min, preferred, max) */
  --text-display: clamp(2.5rem, 1.8rem + 3vw, 4.5rem);
  --text-h1: clamp(2rem, 1.5rem + 2.2vw, 3.5rem);
  --text-h2: clamp(1.5rem, 1.1rem + 1.8vw, 2.75rem);
  --text-h3: clamp(1.25rem, 1.05rem + 0.8vw, 1.75rem);
  --text-h4: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --text-body-lg: clamp(1rem, 0.925rem + 0.3vw, 1.25rem);
  --text-body: clamp(0.9375rem, 0.9rem + 0.15vw, 1.0625rem);
  --text-body-sm: clamp(0.8125rem, 0.78rem + 0.12vw, 0.9375rem);
  --text-label: clamp(0.6875rem, 0.65rem + 0.12vw, 0.8125rem);
  --text-pull-quote: clamp(1.375rem, 1.1rem + 1.2vw, 2.25rem);

  /* Fluid spacing */
  --space-section: clamp(3rem, 1.5rem + 5vw, 8rem);
  --space-xl: clamp(2.5rem, 1.5rem + 3vw, 5rem);
  --space-lg: clamp(1.5rem, 1rem + 2vw, 3rem);
  --space-md: clamp(1rem, 0.75rem + 1vw, 2rem);
  --space-sm: clamp(0.5rem, 0.375rem + 0.5vw, 1rem);
  --space-xs: clamp(0.25rem, 0.2rem + 0.2vw, 0.5rem);

  /* Layout */
  --max-width: 1200px;
  --max-width-content: 800px;
  --max-width-narrow: 600px;
  --content-padding: clamp(1rem, 0.5rem + 2vw, 2rem);

  /* Border radius */
  --radius-sm: 0.125rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;

  /* Shadows — tinted with on-surface, not grey */
  --shadow-sm: 0 2px 8px rgba(29, 28, 23, 0.04);
  --shadow-md: 0 4px 16px rgba(29, 28, 23, 0.06);
  --shadow-lg: 0 10px 40px rgba(29, 28, 23, 0.06);
  --shadow-xl: 0 16px 48px rgba(29, 28, 23, 0.08);

  /* Signature gradient */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
}

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.6;
  color: var(--color-on-surface);
  background-color: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-on-surface);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }
h4 { font-size: var(--text-h4); }

.text-display {
  font-size: var(--text-display);
  font-family: var(--font-headline);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.text-label {
  font-family: var(--font-body);
  font-size: var(--text-label);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* --- Layout utilities --- */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--content-padding);
}

.container--narrow {
  max-width: var(--max-width-content);
  margin-inline: auto;
  padding-inline: var(--content-padding);
}

.container--xs {
  max-width: var(--max-width-narrow);
  margin-inline: auto;
  padding-inline: var(--content-padding);
}

.section {
  padding-block: var(--space-section);
}

/* --- Surface backgrounds --- */
.bg-surface { background-color: var(--color-surface); }
.bg-surface-low { background-color: var(--color-surface-container-low); }
.bg-surface-container { background-color: var(--color-surface-container); }
.bg-surface-high { background-color: var(--color-surface-container-high); }
.bg-surface-highest { background-color: var(--color-surface-container-highest); }
.bg-surface-lowest { background-color: var(--color-surface-container-lowest); }
.bg-inverse { background-color: var(--color-inverse-surface); color: var(--color-inverse-on-surface); }
.bg-primary { background: var(--gradient-primary); color: var(--color-on-primary); }

/* --- Text colors --- */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--color-on-surface-variant); }
.text-outline { color: var(--color-outline); }

/* --- Selection --- */
::selection {
  background-color: var(--color-secondary-container);
}