/* Ritchie Bros. brand foundation — shared across all pages.
   Reflects 2026 brand guidelines: black/white dominant, orange as 10–15% accent,
   Eina 01 (Bold for headlines, Regular for body) with Roboto then Arial as
   approved fallbacks. */

@font-face {
  font-family: 'Roboto';
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  src: url('/fonts/Roboto-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'Roboto';
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  src: url('/fonts/Roboto-Bold.ttf') format('truetype');
}

:root {
  /* Primary palette */
  --rb-white: #FFFFFF;
  --rb-black: #000000;
  --rb-orange: #E87511;

  /* Black tints (per brand guideline ramp) */
  --rb-black-90: #191919;
  --rb-black-80: #323232;
  --rb-black-70: #4C4C4C;
  --rb-black-60: #666666;
  --rb-black-50: #7F7F7F;
  --rb-black-40: #999999;
  --rb-black-30: #B2B2B2;
  --rb-black-20: #CCCCCC;
  --rb-black-10: #E5E5E5;
  --rb-black-05: #F4F4F4;

  /* Semantic UI tokens */
  --bg: var(--rb-white);
  --surface: var(--rb-white);
  --surface-alt: var(--rb-black-05);
  --fg: var(--rb-black);
  --fg-muted: var(--rb-black-60);
  --fg-subtle: var(--rb-black-50);
  --border: var(--rb-black-10);
  --border-strong: var(--rb-black-20);
  --accent: var(--rb-orange);
  --accent-hover: #C7620A;
  --focus-ring: rgba(232, 117, 17, 0.35);

  /* State colors — kept muted; used only as semantic UX indicators, not as
     brand colors. */
  --state-success: #1B7F3B;
  --state-error: #B0271A;
  --state-warning: #B26A00;

  /* Typography */
  --font-headline: 'Eina 01', 'Roboto', Arial, sans-serif;
  --font-body: 'Eina 01', 'Roboto', Arial, sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.005em;
}

a { color: var(--fg); }
a:hover { color: var(--accent); }

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: var(--fg);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Shared topnav used by /generate and /review. */
.rb-topnav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  background: var(--rb-white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.rb-topnav .rb-logo {
  display: inline-flex;
  align-items: center;
  margin-right: 16px;
}
.rb-topnav .rb-logo img {
  display: block;
  height: 28px;
  width: auto;
}
.rb-topnav a {
  color: var(--fg-muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: color 0.15s ease, background 0.15s ease;
}
.rb-topnav a:hover {
  color: var(--fg);
  background: var(--surface-alt);
}
.rb-topnav a.active {
  color: var(--fg);
  position: relative;
}
.rb-topnav a.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.rb-topnav a.logout {
  margin-left: auto;
  color: var(--fg-subtle);
}

/* Shared form controls. Pages may extend, but should not redefine these
   primitives. */
.rb-input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
select,
textarea {
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 10px 12px;
  font: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  width: 100%;
}
input::placeholder, textarea::placeholder {
  color: var(--fg-subtle);
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--focus-ring);
}
input[aria-invalid="true"] {
  border-color: var(--state-error);
}
textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font-body);
}

/* Buttons.
   - .rb-btn (default) = secondary outline button, black on white.
   - .rb-btn-primary = solid black button with white text, orange on hover.
   - .rb-btn-accent  = orange button — reserve for the single primary CTA on
     the page (per brand: orange limited to 10–15% of the design). */
button,
.rb-btn {
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--fg);
  border-radius: 4px;
  padding: 10px 16px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
button:hover:not(:disabled),
.rb-btn:hover:not(:disabled) {
  background: var(--fg);
  color: var(--rb-white);
}
button:disabled,
.rb-btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.rb-btn-primary {
  background: var(--fg);
  color: var(--rb-white);
  border-color: var(--fg);
}
.rb-btn-primary:hover:not(:disabled) {
  background: var(--rb-black-80);
  color: var(--rb-white);
  border-color: var(--rb-black-80);
}

.rb-btn-accent {
  background: var(--accent);
  color: var(--rb-white);
  border-color: var(--accent);
}
.rb-btn-accent:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--rb-white);
}
.rb-btn-accent:disabled {
  background: var(--rb-black-20);
  border-color: var(--rb-black-20);
  color: var(--rb-black-50);
  opacity: 1;
}

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