/* ==========================================================================
   UI component kit — plain CSS, no Tailwind/build step required.
   Drop this file in wwwroot/css and reference it from _Layout.cshtml:
   <link rel="stylesheet" href="~/css/ui-components.css" />
   ========================================================================== */

:root {
  --ui-border: #cbd5e1;      /* slate-300 */
  --ui-border-hover: #94a3b8;/* slate-400 */
  --ui-text: #0f172a;        /* slate-900 */
  --ui-label: #334155;       /* slate-700 */
  --ui-helper: #64748b;      /* slate-500 */
  --ui-error: #e11d48;       /* rose-600 */
  --ui-error-bg: #fda4af40;  /* rose-400 @ 25% */
  --ui-accent: #4f46e5;      /* indigo-600 */
  --ui-accent-hover: #4338ca;/* indigo-700 */
  --ui-accent-active: #3730a3;/* indigo-800 */
  --ui-ring: #6366f14d;      /* indigo-500 @ 30% */
  --ui-radius: 8px;
  --ui-disabled-bg: #f8fafc; /* slate-50 */
  --ui-disabled-text: #94a3b8;
}

.ui-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.ui-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--ui-label);
}

.ui-required {
  color: var(--ui-error);
  margin-left: 2px;
}

.ui-input,
.ui-select {
  width: 100%;
  box-sizing: border-box;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--ui-text);
  background: #fff;
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  font-family: inherit;
}

.ui-input:hover,
.ui-select:hover {
  border-color: var(--ui-border-hover);
}

.ui-input:focus,
.ui-select:focus {
  border-color: var(--ui-accent);
  box-shadow: 0 0 0 3px var(--ui-ring);
}

.ui-input:disabled,
.ui-select:disabled {
  background: var(--ui-disabled-bg);
  color: var(--ui-disabled-text);
  cursor: not-allowed;
}

.ui-field.has-error .ui-input,
.ui-field.has-error .ui-select {
  border-color: var(--ui-error);
}

.ui-field.has-error .ui-input:focus,
.ui-field.has-error .ui-select:focus {
  box-shadow: 0 0 0 3px var(--ui-error-bg);
}

.ui-helper {
  font-size: 12px;
  color: var(--ui-helper);
}

.ui-field.has-error .ui-helper {
  color: var(--ui-error);
}

/* Select wrapper (native <select> + chevron) */
.ui-select-wrap {
  position: relative;
}

.ui-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 32px;
}

.ui-select-chevron {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: #94a3b8;
  font-size: 12px;
}

/* Checkbox */
.ui-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--ui-text);
  cursor: pointer;
}

.ui-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--ui-accent);
  cursor: pointer;
}

.ui-checkbox input:disabled {
  cursor: not-allowed;
}

/* Radio group */
.ui-radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.ui-radio-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--ui-text);
  cursor: pointer;
}

.ui-radio-option input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--ui-accent);
  cursor: pointer;
}

/* Button */
.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 500;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: var(--ui-radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  font-family: inherit;
}

.ui-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ui-btn:focus-visible {
  box-shadow: 0 0 0 3px var(--ui-ring);
  outline: none;
}

.ui-btn-primary {
  background: var(--ui-accent);
  color: #fff;
}
.ui-btn-primary:hover:not(:disabled) {
  background: var(--ui-accent-hover);
}
.ui-btn-primary:active:not(:disabled) {
  background: var(--ui-accent-active);
}

.ui-btn-secondary {
  background: #fff;
  border-color: var(--ui-border);
  color: var(--ui-text);
}
.ui-btn-secondary:hover:not(:disabled) {
  border-color: var(--ui-border-hover);
}

.ui-btn-ghost {
  background: transparent;
  color: var(--ui-text);
}
.ui-btn-ghost:hover:not(:disabled) {
  background: #f1f5f9;
}

.ui-btn-sm { padding: 6px 12px; font-size: 12px; }
.ui-btn-lg { padding: 10px 20px; font-size: 16px; }
.ui-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: .2s;
}

    .ui-link:hover {
        text-decoration: underline;
    }

.ui-link-default {
    color: #374151;
}

.ui-link-primary {
    color: #2563eb;
}

.ui-link-secondary {
    color: #6b7280;
}

.ui-link-success {
    color: #16a34a;
}

.ui-link-danger {
    color: #dc2626;
}

.ui-link-ghost {
    color: #ea6a2e;
}

.ui-link[aria-disabled="true"] {
    opacity: .5;
    pointer-events: none;
    cursor: not-allowed;
}