/* ==========================================================================
   PONKOIN — Base: reset, typography, layout primitives, utilities
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--appbar-h) + 24px);
}

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

body {
  min-height: 100svh;
  background: var(--md-surface);
  color: var(--md-on-surface);
  font: var(--type-body-md);
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  /* Ambient brand grid — sits behind everything, never intercepts pointers */
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image: linear-gradient(var(--ponk-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--ponk-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 10%, transparent 78%);
}

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

img {
  height: auto;
}

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

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

ul,
ol {
  padding: 0;
  list-style: none;
}

hr {
  border: none;
  border-top: 1px solid var(--md-outline-variant);
}

:focus-visible {
  outline: 3px solid var(--md-secondary);
  outline-offset: 3px;
  border-radius: var(--md-shape-xs);
}

::selection {
  background: var(--md-primary);
  color: var(--md-on-primary);
}

/* ---------- Scrollbar ---------- */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--md-outline-variant) transparent;
}
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-thumb {
  background: var(--md-outline-variant);
  border-radius: var(--md-shape-full);
  border: 2px solid var(--md-surface);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--md-outline);
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--md-font-brand);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.display-lg { font: var(--type-display-lg); letter-spacing: -0.035em; }
.display-md { font: var(--type-display-md); letter-spacing: -0.03em; }
.display-sm { font: var(--type-display-sm); letter-spacing: -0.025em; }
.headline-lg { font: var(--type-headline-lg); letter-spacing: -0.02em; }
.headline-md { font: var(--type-headline-md); letter-spacing: -0.02em; }
.headline-sm { font: var(--type-headline-sm); letter-spacing: -0.015em; }
.title-lg { font: var(--type-title-lg); }
.title-md { font: var(--type-title-md); }
.title-sm { font: var(--type-title-sm); }
.body-lg { font: var(--type-body-lg); }
.body-md { font: var(--type-body-md); }
.body-sm { font: var(--type-body-sm); }
.label-lg { font: var(--type-label-lg); }
.label-md { font: var(--type-label-md); }

p {
  text-wrap: pretty;
}

.lede {
  font: var(--type-body-lg);
  color: var(--md-on-surface-variant);
  max-width: 62ch;
}

.muted {
  color: var(--md-on-surface-variant);
}

.mono {
  font-family: var(--md-font-mono);
  font-variant-ligatures: none;
}

.text-primary { color: var(--md-primary); }
.text-secondary { color: var(--md-secondary); }
.text-tertiary { color: var(--md-tertiary); }

.gradient-text {
  background: linear-gradient(100deg, var(--ponk-grad-a) 8%, var(--ponk-grad-b) 58%, var(--ponk-grad-c) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */
.wrap {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.wrap--narrow {
  max-width: 860px;
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--tight {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section--alt {
  background: var(--md-surface-container-low);
  border-block: 1px solid var(--ponk-hairline);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
  max-width: 68ch;
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
  align-items: center;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); }

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.stack > * + * {
  margin-top: var(--stack-gap, 1rem);
}

.center {
  text-align: center;
}

/* ==========================================================================
   Utilities
   ========================================================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  translate: -50% -140%;
  z-index: 1000;
  padding: 0.85rem 1.5rem;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border-radius: 0 0 var(--md-shape-lg) var(--md-shape-lg);
  font: var(--type-label-lg);
  transition: translate var(--md-dur-medium) var(--md-ease-emphasized);
}

.skip-link:focus-visible {
  translate: -50% 0;
}

.no-scroll {
  overflow: hidden;
}

/* Scroll-reveal (progressive enhancement — visible by default without JS) */
.js .reveal {
  opacity: 0;
  translate: 0 26px;
  transition: opacity var(--md-dur-long) var(--md-ease-emphasized-decel),
    translate var(--md-dur-long) var(--md-ease-emphasized-decel);
  transition-delay: var(--reveal-delay, 0ms);
}

.js .reveal.is-visible {
  opacity: 1;
  translate: 0 0;
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal {
    opacity: 1;
    translate: none;
  }
}