/* ==========================================================================
   Base Styles — One Agent Company
   Modern reset, typography, and layout utilities
   ========================================================================== */

/* -----------------------------------------------------------------------
   Font Faces
   ----------------------------------------------------------------------- */
@font-face {
  font-family: "Inter";
  src: url("../assets/fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("../assets/fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
  font-style: normal;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  min-height: 100vh;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  background-image:
    radial-gradient(ellipse at 15% 20%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 60%, rgba(139, 92, 246, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 90%, rgba(6, 182, 212, 0.03) 0%, transparent 50%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Persistent Three.js canvas */
#scene-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

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

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

button {
  cursor: pointer;
  background: none;
  border: none;
}

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

ul,
ol {
  list-style: none;
}

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

hr {
  border: none;
  border-top: 1px solid var(--color-border);
}

/* Remove default focus styles and add custom */
:focus {
  outline: none;
}

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

/* Selection styling */
::selection {
  background-color: rgba(99, 102, 241, 0.2);
  color: var(--color-text-primary);
}

::-moz-selection {
  background-color: rgba(99, 102, 241, 0.2);
  color: var(--color-text-primary);
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-text-tertiary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

/* -----------------------------------------------------------------------
   Typography — Headings
   ----------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.25rem, 5vw + 1rem, 4.5rem);
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.75rem, 3vw + 0.5rem, 3rem);
  font-weight: var(--weight-bold);
}

h3 {
  font-size: clamp(1.375rem, 2vw + 0.5rem, 2rem);
  font-weight: var(--weight-semibold);
}

h4 {
  font-size: clamp(1.125rem, 1.5vw + 0.25rem, 1.5rem);
  font-weight: var(--weight-semibold);
}

h5 {
  font-size: clamp(1rem, 1vw + 0.25rem, 1.25rem);
  font-weight: var(--weight-semibold);
}

h6 {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
}

/* -----------------------------------------------------------------------
   Typography — Body
   ----------------------------------------------------------------------- */
p {
  margin-bottom: var(--space-4);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

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

strong,
b {
  font-weight: var(--weight-semibold);
}

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

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.15em 0.4em;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  overflow-x: auto;
}

/* -----------------------------------------------------------------------
   Layout — Container
   ----------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container--narrow {
  max-width: 800px;
}

.container--wide {
  max-width: 1400px;
}

/* -----------------------------------------------------------------------
   Layout — Section
   ----------------------------------------------------------------------- */
.section {
  padding: var(--space-24) 0;
  position: relative;
  z-index: 1;
}

.section--sm {
  padding: var(--space-16) 0;
}

.section--lg {
  padding: 8rem 0;
}

/* -----------------------------------------------------------------------
   Layout — Grid
   ----------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid--auto-fill {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.grid--auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* -----------------------------------------------------------------------
   Layout — Flex Utilities
   ----------------------------------------------------------------------- */
.flex {
  display: 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;
}

.flex--gap-sm {
  gap: var(--space-2);
}

.flex--gap {
  gap: var(--space-4);
}

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

/* -----------------------------------------------------------------------
   Text Utilities
   ----------------------------------------------------------------------- */
.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

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

/* -----------------------------------------------------------------------
   Visibility Utilities
   ----------------------------------------------------------------------- */
.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;
}

/* -----------------------------------------------------------------------
   Accessibility — Reduced Motion
   ----------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}