/* Guided walkthrough styles — shared by student calculators */
.gw-result-card { margin-top: 1.25rem; }
.gw-section-title { font-size: 1.15rem; color: #8b0000; margin: 1.25rem 0 0.5rem; padding-bottom: 0.25rem; border-bottom: 2px solid #ccc; }
.gw-section-title:first-child { margin-top: 0; }
.gw-answer-box {
    background: #eef5ee; border-left: 4px solid #1b5e20; padding: 1rem 1.25rem;
    margin-bottom: 1rem; border-radius: 0 8px 8px 0; font-family: Georgia, serif; font-size: 1.1rem;
}
.gw-diagram { margin: 1rem 0; padding: 1rem; background: #f8f9fa; border-radius: 8px; text-align: center; }
.gw-diagram svg { max-width: 100%; height: auto; }
.gw-spoiler { display: none; }
.gw-spoiler.gw-spoiler-visible { display: block; }
.gw-walkthrough-intro {
    font-size: 0.95rem; color: #333; margin: 0 0 1rem; padding: 0.75rem 1rem;
    background: #f5f5f5; border-radius: 8px; border-left: 4px solid #C90C0F;
}
.gw-progress { font-size: 0.9rem; font-weight: 600; margin-bottom: 0.75rem; }
.gw-steps { list-style: none; padding: 0; margin: 0; }
.gw-steps li { padding: 0.6rem 0; border-bottom: 1px solid #e8e8e8; display: flex; gap: 0.75rem; align-items: flex-start; }
.gw-steps li:last-child { border-bottom: none; }
.gw-steps-interactive > li.gw-step-hidden { display: none !important; }
.gw-step-num {
    flex-shrink: 0; width: 1.75rem; height: 1.75rem; background: #C90C0F; color: #fff;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; font-weight: bold;
}
.gw-step-body { flex: 1; font-family: Georgia, serif; font-size: 1.02rem; line-height: 1.5; }
.gw-step-check { margin-top: 0.5rem; padding: 0.75rem; background: #f8f8f8; border: 2px solid #ddd; border-radius: 8px; }
.gw-step-check p { margin: 0 0 0.5rem; font-size: 0.95rem; font-family: inherit; }
.gw-step-check-row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.gw-step-check-row input {
    flex: 1; min-width: 140px; padding: 0.55rem 0.65rem; font-size: 1rem;
    border: 2px solid #888; border-radius: 6px; font-family: inherit;
}
.gw-step-check-row input:focus { outline: 3px solid #1a1a1a; outline-offset: 2px; border-color: #C90C0F; }
.gw-btn-check {
    padding: 0.55rem 1rem; font-size: 0.95rem; background: #C90C0F; color: #fff;
    border: none; border-radius: 6px; cursor: pointer; font-weight: 600; font-family: inherit;
}
.gw-btn-check:hover { background: #8b0000; }
.gw-step-feedback { margin-top: 0.5rem; font-size: 0.9rem; min-height: 1.25rem; font-family: inherit; }
.gw-step-feedback.ok { color: #1b5e20; font-weight: 600; }
.gw-step-feedback.err { color: #8b0000; font-weight: 600; }
.gw-step-work {
    margin-top: 0.6rem; padding: 0.65rem 0.75rem; background: #eef5ee;
    border-left: 3px solid #1b5e20; border-radius: 0 6px 6px 0; display: none;
}
.gw-step-work.gw-step-work-visible { display: block; }
.gw-step-work-hidden { display: none !important; }
.gw-step-done .gw-step-check { border-color: #1b5e20; background: #eef5ee; }
.gw-step-done .gw-step-check-row { display: none; }
.gw-complete-banner {
    display: none; margin: 1rem 0; padding: 1rem; background: #eef5ee;
    border: 2px solid #1b5e20; border-radius: 8px; font-weight: 600;
}
.gw-complete-banner.visible { display: block; }
.st-guided-option {
    display: flex; align-items: flex-start; gap: 0.5rem; margin: 0.75rem 0 0;
    font-size: 0.95rem; cursor: pointer; line-height: 1.45;
}
.st-guided-option input { margin-top: 0.2rem; accent-color: #C90C0F; flex-shrink: 0; cursor: pointer; }
#st-output { display: none; margin-top: 1.25rem; }
.gw-summary-table {
    background: #f8f9fa; padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem;
}
.gw-summary-table dl {
    display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 1rem; margin: 0;
}
.gw-summary-table dt { font-weight: 600; }
.gw-summary-table p { margin: 0.25rem 0; }