/**
 * Base styles — reset and foundational styles using design tokens.
 *
 * Provides a minimal reset and base typography. Loaded after tokens.css.
 */

/* ── Scoped Reset ── */
/* Only apply box-sizing reset to new dt-* components.
   Legacy elements assume content-box sizing — a global
   reset breaks their pixel-precise positioning. */

.dt-app-root,
.dt-app-root *,
.dt-app-root *::before,
.dt-app-root *::after,
[class^="dt-"],
[class^="dt-"] *,
[class^="dt-"] *::before,
[class^="dt-"] *::after {
  box-sizing: border-box;
}

/* ── Base Typography ── */
/* Scoped to dt-app-root to avoid overriding legacy body styles */

.dt-app-root {
  font-family: var(--dt-font-primary);
  font-size: var(--dt-text-base);
  line-height: var(--dt-line-height);
  color: var(--dt-gray-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Utility Classes ── */

.dt-hidden {
  display: none !important;
}

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

.dt-skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  z-index: 99999;
  padding: 8px 12px;
  background: var(--dt-primary);
  color: #fff;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}

.dt-skip-link:focus {
  top: 0;
  outline: 2px solid var(--dt-primary);
  outline-offset: 2px;
}

/* ── Focus Styles ── */

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

/* ── Button Reset ── */

.dt-btn-reset {
  appearance: none;
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

/* ── Button Styles (replaces Bootstrap 2.3.2 .btn) ── */

.dt-btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  color: var(--dt-gray-900);
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  background-color: var(--dt-gray-100);
  border: 1px solid var(--dt-gray-400);
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: background-color 0.1s linear;
}

.dt-btn:hover,
.dt-btn:focus {
  color: var(--dt-gray-900);
  text-decoration: none;
  background-color: var(--dt-gray-200);
}

.dt-btn:active {
  background-image: none;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.05);
}

.dt-btn:focus-visible {
  outline: 2px solid var(--dt-primary);
  outline-offset: 2px;
}

.dt-btn-lg {
  padding: 11px 19px;
  font-size: 17.5px;
  border-radius: 6px;
}

.dt-btn-primary {
  color: #ffffff;
  background-color: #0066cc;
  background-image: linear-gradient(to bottom, #0088cc, #0044cc);
  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
}

.dt-btn-primary:hover,
.dt-btn-primary:focus {
  color: #ffffff;
  background-color: #0044cc;
  background-image: none;
}

.dt-btn-primary:active {
  background-color: #003399;
}

.dt-btn-success {
  color: #ffffff;
  background-color: #5bb75b;
  background-image: linear-gradient(to bottom, #62c462, #51a351);
  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
}

.dt-btn-success:hover,
.dt-btn-success:focus {
  color: #ffffff;
  background-color: #51a351;
  background-image: none;
}

.dt-btn-success:active {
  background-color: #408140;
}

.dt-btn-danger {
  color: #ffffff;
  background-color: #da4f49;
  background-image: linear-gradient(to bottom, #ee5f5b, #bd362f);
  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
}

.dt-btn-danger:hover,
.dt-btn-danger:focus {
  color: #ffffff;
  background-color: #bd362f;
  background-image: none;
}

.dt-btn-danger:active {
  background-color: #a9302a;
}