/* ============================================
   AQUASTEALTH - Base / Reset / Typography
   ============================================ */

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

html {
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-secondary);
  background: var(--bg-deepest);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

input,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

ul, ol {
  list-style: none;
}

/* ---- Fonts ---- */
@font-face {
  font-family: 'Actay Wide';
  src: url('../css/actaywide.woff') format('woff');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

/* ---- Typography ---- */
h1, h2 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h1 { font-size: var(--text-hero); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

/* Heading accent — gradient keyword highlight */
.heading-accent {
  background: linear-gradient(135deg, var(--cyan-200), var(--accent), var(--cyan-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ---- Utility ---- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--section-pad-x);
}

.section {
  height: 100vh;
  height: 100svh;
  scroll-snap-align: start;
  overflow: hidden;
  display: flex;
  align-items: center;
  position: relative;
}

.text-accent {
  color: var(--accent);
}

.text-amber {
  color: var(--cta);
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent), var(--cyan-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Selection ---- */
::selection {
  background: var(--accent);
  color: var(--bg-deepest);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deepest);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* ---- Cursor Glow ---- */
.cursor-glow {
  position: fixed;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 209, 238, 0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  will-change: transform;
}

/* ---- Highlight ---- */
.highlight {
  color: var(--accent);
  position: relative;
}

.highlight-underline {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
}