/* ==========================================================================
   Base — Reset, typography, CSS custom properties
   ========================================================================== */

:root {
  /* Docfield Brand Colors - Blues */
  --blue-primary: #0049DC;        /* Byzantine Blue - Primary brand color */
  --blue-400: #1C69FF;            /* B400 - Bright interactive blue */
  --blue-300: #4B87FF;            /* B300 - Light blue */
  --blue-100: #ADC8FF;            /* B100 - Very light blue */

  /* Docfield Brand Colors - Neutrals */
  --neutral-800: #121B2C;         /* N800 - Oxford Blue - Dark text */
  --neutral-300: #5A6D7D;         /* N300 - Medium gray */
  --neutral-100: #787D87;         /* N100 - Gray text */
  --neutral-60: #AFB2B8;          /* N60 - Light gray */
  --neutral-40: #E1E2E4;          /* N40 - Very light gray */
  --neutral-20: #F5F6F6;          /* N20 - Background gray */
  --white: #FFFFFF;

  /* Semantic color mappings */
  --primary-color: var(--blue-primary);
  --primary-color-light: #0049DC1a;
  --primary-color-hover: #1C69FF;  /* B400 on hover */

  --text-color: var(--neutral-800);
  --text-secondary: var(--neutral-300);
  --text-muted: var(--neutral-100);

  --bg-color: var(--white);
  --bg-secondary: var(--neutral-20);
  --bg-hover: var(--neutral-40);

  --border-color: var(--neutral-40);
  --border-light: var(--neutral-20);

  --shadow-sm: 0 1px 3px rgba(18, 27, 44, 0.08);
  --shadow-md: 0 4px 12px rgba(18, 27, 44, 0.1);
  --shadow-lg: 0 8px 24px rgba(18, 27, 44, 0.12);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --menu-height: 92px;
  --sidebar-width: 320px;

  --font-sans: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-secondary);
}

body.sidebar-open {
  overflow: hidden;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-color-hover);
  text-decoration: underline;
}

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

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  line-height: 1.3;
  color: var(--text-color);
}

ul, ol {
  padding-left: 1.5em;
}

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

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