/* Test Builder (Exams/Build.razor) + standalone review queue
   (Questions/Review.razor) styles — kept separate from admin.css since
   they're only used on those two surfaces. Tokens come from brand.css. */

@keyframes builder-fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
}
.builder-fade { animation: builder-fade-in 220ms ease-out; }

@keyframes builder-pulse {
    0%, 100% { opacity: 0.35; }
    50% { opacity: 1; }
}
.builder-dot {
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: var(--accent);
    animation: builder-pulse 1.1s ease-in-out infinite;
    display: inline-block;
}
.builder-skel {
    border-radius: 7px;
    background: var(--surface-2);
    animation: builder-pulse 1.4s ease-in-out infinite;
}

.builder-dropzone {
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius-lg);
    background: var(--surface-2);
    min-height: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 40px;
    text-align: center;
    transition: background 150ms, border-color 150ms;
}
.builder-dropzone.dragging {
    border-color: var(--accent);
    background: var(--accent-light);
}

.builder-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px 8px 14px;
    border: 1px solid var(--border-strong);
    border-radius: 20px;
    background: var(--surface);
    font-size: 14px;
}
.builder-chip-input {
    border: none;
    background: transparent;
    font: inherit;
    font-size: 14px;
    color: var(--text);
    padding: 0;
    min-width: 40px;
}
.builder-chip-input:focus {
    outline: none;
    border-bottom: 1.5px solid var(--accent);
}
.builder-chip-count {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-hover);
    background: var(--accent-light);
    padding: 1px 7px;
    border-radius: 10px;
}
.builder-chip-add {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px dashed var(--border-strong);
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-secondary);
    background: transparent;
}
.builder-chip-add:hover { background: var(--surface-2); }

.builder-switch {
    width: 44px;
    height: 24px;
    border-radius: 12px;
    position: relative;
    flex-shrink: 0;
    cursor: pointer;
    transition: background 150ms;
    border: none;
    padding: 0;
}
.builder-switch.on { background: var(--accent); }
.builder-switch.off { background: var(--border-strong); }
.builder-switch-knob {
    position: absolute;
    top: 2px;
    width: 20px;
    height: 20px;
    border-radius: 10px;
    background: #FFFFFF;
    box-shadow: var(--shadow-sm);
    transition: left 150ms;
}
.builder-switch.on .builder-switch-knob { left: 22px; }
.builder-switch.off .builder-switch-knob { left: 2px; }

.builder-progress-track {
    height: 6px;
    border-radius: 3px;
    background: var(--border);
    position: relative;
    overflow: hidden;
}
.builder-progress-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 6px;
    border-radius: 3px;
    background: var(--accent);
    transition: width 300ms;
}

.builder-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}
.builder-pill-verified { background: var(--accent-light); color: var(--accent-hover); }
.builder-pill-warning { background: var(--warning-light); color: var(--warning); }
.builder-pill-applied { background: var(--info-light); color: var(--info); }
.builder-pill-recall { background: var(--surface-2); color: var(--text-secondary); }
.builder-pill-covered { background: var(--accent-light); color: var(--accent-hover); }

.builder-option {
    display: flex;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 14px;
    cursor: pointer;
    background: var(--surface);
}
.builder-option:hover { background: var(--surface-2); }
.builder-option.is-key { border-color: var(--accent); background: var(--accent-light); }
.builder-option.is-verifier-pick { border-color: var(--warning); background: var(--warning-light); }
.builder-option-letter { font-weight: 600; color: var(--text-tertiary); }
.builder-option.is-key .builder-option-letter { color: var(--accent-hover); }
.builder-option.is-verifier-pick .builder-option-letter { color: var(--warning); }

.builder-card-collapsed {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    cursor: pointer;
    background: var(--surface);
}
.builder-card-collapsed.approved { background: var(--surface-2); color: var(--text-secondary); }
.builder-card-collapsed.rejected { background: var(--surface); color: var(--text-tertiary); text-decoration: line-through; }

.builder-groupmeta { font-size: 12px; color: var(--text-tertiary); }

.builder-cardgrid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}
@media (max-width: 900px) {
    .builder-cardgrid { grid-template-columns: 1fr; }
}