/* Advanced UI Components */
:root {
    --card-bg: rgba(15, 23, 42, 0.6);
    --card-border: rgba(51, 65, 85, 0.5);
    --card-hover-bg: rgba(30, 41, 59, 0.8);
}

/* Choice Cards System */
.choice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.choice-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
}

.choice-card:hover {
    background: var(--card-hover-bg);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.choice-card.selected {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary);
}

.choice-card i {
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: color 0.25s;
}

.choice-card.selected i {
    color: var(--color-primary);
}

.choice-card span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

.choice-card .check-icon {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-primary);
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.2s;
}

.choice-card.selected .check-icon {
    opacity: 1;
    transform: scale(1);
}

/* Multi-select Grid */
.multi-choice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
}

.multi-choice-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
}

.multi-choice-item:hover {
    border-color: rgba(255,255,255,0.2);
    color: var(--text-main);
}

.multi-choice-item.selected {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Original Diagnostic Styles (Restored) */
.diag-form-group { margin-bottom: 1.5rem; text-align: left; }
.diag-label { display: block; font-weight: 600; margin-bottom: 0.5rem; font-size: 0.95rem; }
.diag-input { width: 100%; padding: 0.75rem 1rem; background: var(--bg-dark); border: 1px solid var(--border-color); border-radius: 0.5rem; color: white; font-family: inherit; font-size: 1rem; }
.diag-input:focus { outline: none; border-color: var(--color-primary); }

.insight-item { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem; padding: 1.25rem; background: rgba(255,255,255,0.03); border-radius: 0.75rem; border: 1px solid var(--border-color); }
.insight-item i { font-size: 1.25rem; margin-top: 0.2rem; }
.insight-item strong { display: block; margin-bottom: 0.25rem; color: var(--text-main); }

.metrics-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

@media (max-width: 600px) {
    .metrics-grid { grid-template-columns: 1fr; }
    .metric-value { font-size: 2rem; }
    .choice-grid { grid-template-columns: 1fr; }
}
.metric-card { background: var(--bg-card-light); border: 1px solid var(--border-color); border-radius: 1rem; padding: 1.5rem; }
.metric-header { color: var(--text-muted); font-size: 0.85rem; font-weight: 500; margin-bottom: 0.75rem; }
.metric-value { font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; line-height: 1; }
.metric-value-error { color: var(--color-error); }
.metric-value-warning { color: var(--color-warning); }
.metric-value-accent { color: var(--color-success); }
.metric-progress-bg { height: 6px; background: var(--border-color); border-radius: 3px; overflow: hidden; margin-bottom: 0.75rem; }
.metric-progress-fill { height: 100%; transition: width 0.3s ease; border-radius: 3px; }
.metric-progress-error { background: var(--color-error); }
.metric-progress-warning { background: var(--color-warning); }
.metric-footer { color: var(--text-muted); font-size: 0.8rem; line-height: 1.4; }

.check-list { list-style: none; padding: 0; }
.check-list li { position: relative; padding-left: 1.5rem; margin-bottom: 0.5rem; color: var(--text-muted); font-size: 0.9rem; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--color-success); font-weight: bold; }

.report-header-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(15, 23, 42, 0.4));
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
}

.grade-badge {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    background: var(--color-primary);
    color: white;
    border-radius: 2rem;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.file-upload-zone:hover, .file-upload-zone.dragover {
    background: rgba(59, 130, 246, 0.05);
    border-color: var(--color-primary) !important;
}

.diag-error-msg {
    color: #ff4d4d;
    background: rgba(255, 77, 77, 0.1);
    border: 1px solid rgba(255, 77, 77, 0.2);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    display: none;
    align-items: center;
    gap: 0.5rem;
}