@tailwind base;
@tailwind components;
@tailwind utilities;

@import "./theme.css";

/* ---- Base ---------------------------------------------------------------- */

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

html,
body,
#root {
  height: 100%;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Geist", system-ui, sans-serif;
  font-weight: 400;
  font-feature-settings: "ss01", "ss02", "cv11";
  transition: background 500ms cubic-bezier(0.16, 1, 0.3, 1),
    color 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

::selection {
  background: var(--accent);
  color: var(--surface);
}

/* Editorial paper grain — the whole point of the aesthetic. Overlaid on the
   entire document at low opacity. Uses SVG feTurbulence for zero-request grain. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: var(--grain);
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='7'/><feColorMatrix values='0 0 0 0 0.06  0 0 0 0 0.12  0 0 0 0 0.23  0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 240px 240px;
}

[data-theme="dark"] body::before {
  mix-blend-mode: screen;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='11'/><feColorMatrix values='0 0 0 0 0.93  0 0 0 0 0.88  0 0 0 0 0.78  0 0 0 0.8 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ---- Type utilities ----------------------------------------------------- */

.font-display {
  font-family: "Instrument Serif", serif;
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 0.92;
}

.font-display-italic {
  font-family: "Instrument Serif", serif;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 0.92;
}

.font-mono {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-feature-settings: "calt", "liga", "ss01";
}

/* Small caps + tracking for section labels — the "chapter marker" of the site */
.eyebrow {
  font-family: "Geist", system-ui, sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ---- Focus rings — replaced with editorial underline ------------------- */

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

/* Hide the default focus on decorative elements */
button:focus,
a:focus {
  outline: none;
}
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* ---- Custom cursor — soft ink dot on interactive elements -------------- */

.cursor-ink {
  cursor: none;
}

/* ---- Scrollbar --------------------------------------------------------- */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--rule);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--ink-mute);
}

/* ---- Motion — respect user preference ---------------------------------- */

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