/* Decision-Tree Investigation Engine Styles */

/* ========================================
   CSS VARIABLES
   ======================================== */

:root {
    --dt-primary: #1a73e8;
    --dt-primary-light: #d2e3fc;
    --dt-primary-dark: #1558b0;
    --dt-dark: #1f2937;
    --dt-text: #374151;
    --dt-text-light: #6b7280;
    --dt-border: #e5e7eb;
    --dt-bg: #f8fafc;
    --dt-card-bg: #ffffff;
    --dt-yes-color: #059669;
    --dt-yes-bg: #ecfdf5;
    --dt-yes-border: #a7f3d0;
    --dt-no-color: #d97706;
    --dt-no-bg: #fffbeb;
    --dt-no-border: #fde68a;
    --dt-malicious: #dc2626;
    --dt-malicious-bg: #fef2f2;
    --dt-benign: #059669;
    --dt-benign-bg: #ecfdf5;
    --dt-escalate: #ea580c;
    --dt-escalate-bg: #fff7ed;
    --dt-radius: 12px;
    --dt-radius-sm: 8px;
    --dt-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --dt-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* ========================================
   APP CONTAINER
   ======================================== */

#dt-app {
    max-width: 920px;
    margin: 0 auto;
    padding: 2rem 1rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--dt-text);
    line-height: 1.6;
}

/* ========================================
   PROGRESS BAR
   ======================================== */

.dt-progress {
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.dt-progress-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--dt-text);
    white-space: nowrap;
}

.dt-progress-info strong {
    color: var(--dt-primary);
}

.dt-progress-bar-wrap {
    flex: 1;
    max-width: 320px;
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
}

.dt-progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--dt-primary), #6366f1);
    border-radius: 4px;
    transition: width 0.4s ease;
    min-width: 0;
}

.dt-progress-count {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dt-text);
    white-space: nowrap;
}

/* ========================================
   TEST LIST / GRID
   ======================================== */

.dt-list-header {
    text-align: center;
    margin-bottom: 2rem;
}

.dt-list-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dt-dark);
    margin: 0 0 0.5rem;
}

.dt-list-header p {
    font-size: 1rem;
    color: var(--dt-text-light);
    margin: 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.dt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.dt-grid-card {
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    border-radius: var(--dt-radius);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: all 0.2s ease;
    cursor: default;
}

.dt-grid-card:hover {
    border-color: var(--dt-primary);
    box-shadow: var(--dt-shadow-hover);
    transform: translateY(-2px);
}

.dt-grid-card.completed {
    border-color: var(--dt-yes-border);
    background: linear-gradient(135deg, var(--dt-card-bg), var(--dt-yes-bg));
}

.dt-grid-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.dt-grid-card-id {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--dt-primary-light);
    color: var(--dt-primary-dark);
}

.dt-grid-card-check {
    color: var(--dt-yes-color);
    font-size: 1.125rem;
    display: none;
}

.dt-grid-card.completed .dt-grid-card-check {
    display: block;
}

.dt-grid-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dt-dark);
    line-height: 1.4;
    flex: 1;
}

.dt-grid-card-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.625rem 1rem;
    background: linear-gradient(135deg, var(--dt-primary), var(--dt-primary-dark));
    color: #fff;
    border: none;
    border-radius: var(--dt-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
    margin-top: auto;
}

.dt-grid-card-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(26, 115, 232, 0.45);
}

.dt-grid-card.completed .dt-grid-card-btn {
    background: linear-gradient(135deg, #059669, #047857);
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}

/* ========================================
   SCENARIO CARD
   ======================================== */

.dt-scenario-card {
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    border-radius: var(--dt-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--dt-shadow);
}

.dt-scenario-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    background: var(--dt-primary-light);
    color: var(--dt-primary-dark);
}

.dt-scenario-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--dt-dark);
    margin: 0 0 0.75rem;
    line-height: 1.3;
}

.dt-scenario-goal {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    background: #f0f4ff;
    border: 1px solid #c7d2fe;
    border-radius: 10px;
    padding: 1rem 1.125rem;
    margin-bottom: 1rem;
    font-size: 0.9375rem;
    color: #3730a3;
    line-height: 1.5;
}

.dt-scenario-goal i {
    flex-shrink: 0;
    margin-top: 2px;
    color: #6366f1;
}

.dt-data-sources {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.dt-data-source-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.3rem 0.75rem;
    background: var(--dt-bg);
    border: 1px solid var(--dt-border);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--dt-text-light);
}

.dt-data-source-tag i {
    font-size: 0.625rem;
    color: var(--dt-primary);
}

/* ========================================
   TERMINAL / LOG DISPLAY (reuse pattern)
   ======================================== */

.dt-log-display {
    background: #1e1e2e;
    border: 1px solid #313244;
    border-radius: var(--dt-radius-sm);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
    margin-bottom: 1.5rem;
}

.dt-log-header {
    background: #313244;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid #45475a;
}

.dt-log-dots {
    display: flex;
    gap: 6px;
}

.dt-log-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dt-log-dot.red { background: #f38ba8; }
.dt-log-dot.yellow { background: #f9e2af; }
.dt-log-dot.green { background: #a6e3a1; }

.dt-log-title {
    font-size: 12px;
    color: #a6adc8;
    margin-left: 8px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.dt-log-body {
    padding: 16px 20px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.7;
    color: #cdd6f4;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* ========================================
   DECISION STEP CARDS
   ======================================== */

.dt-steps-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.dt-step-card {
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    border-radius: var(--dt-radius);
    overflow: hidden;
    opacity: 0;
    transform: translateY(16px);
    animation: dtStepSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.dt-step-card.active {
    border-color: var(--dt-primary);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.12), var(--dt-shadow);
}

.dt-step-card.completed {
    border-color: var(--dt-yes-border);
}

.dt-step-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--dt-bg);
    border-bottom: 1px solid var(--dt-border);
}

.dt-step-card.active .dt-step-header {
    background: #eff6ff;
    border-bottom-color: #bfdbfe;
}

.dt-step-card.completed .dt-step-header {
    background: var(--dt-yes-bg);
    border-bottom-color: var(--dt-yes-border);
}

.dt-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #e5e7eb;
    color: var(--dt-text);
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
}

.dt-step-card.active .dt-step-number {
    background: var(--dt-primary);
    color: #fff;
}

.dt-step-card.completed .dt-step-number {
    background: var(--dt-yes-color);
    color: #fff;
}

.dt-step-label {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--dt-text-light);
}

.dt-step-card.active .dt-step-label {
    color: var(--dt-primary);
}

.dt-step-card.completed .dt-step-label {
    color: var(--dt-yes-color);
}

.dt-step-check {
    margin-left: auto;
    color: var(--dt-yes-color);
    font-size: 1rem;
    display: none;
}

.dt-step-card.completed .dt-step-check {
    display: block;
}

.dt-step-body {
    padding: 1.25rem;
}

.dt-step-question {
    font-size: 0.9375rem;
    color: var(--dt-dark);
    line-height: 1.6;
    margin-bottom: 1rem;
    font-weight: 500;
}

/* ========================================
   YES / NO BUTTONS
   ======================================== */

.dt-choice-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.dt-choice-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    border-radius: var(--dt-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1.4;
    text-align: center;
    border: 2px solid transparent;
}

.dt-choice-btn.yes-btn {
    background: var(--dt-yes-bg);
    color: var(--dt-yes-color);
    border-color: var(--dt-yes-border);
}

.dt-choice-btn.yes-btn:hover {
    background: #d1fae5;
    border-color: var(--dt-yes-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.2);
}

.dt-choice-btn.no-btn {
    background: var(--dt-no-bg);
    color: var(--dt-no-color);
    border-color: var(--dt-no-border);
}

.dt-choice-btn.no-btn:hover {
    background: #fef3c7;
    border-color: var(--dt-no-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(217, 119, 6, 0.2);
}

.dt-choice-btn.selected {
    transform: none;
    cursor: default;
}

.dt-choice-btn.yes-btn.selected {
    background: var(--dt-yes-color);
    color: #fff;
    border-color: var(--dt-yes-color);
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}

.dt-choice-btn.no-btn.selected {
    background: var(--dt-no-color);
    color: #fff;
    border-color: var(--dt-no-color);
    box-shadow: 0 2px 8px rgba(217, 119, 6, 0.3);
}

.dt-choice-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ========================================
   BRANCH OUTCOME CALLOUT
   ======================================== */

.dt-branch-outcome {
    margin-top: 1rem;
    padding: 0.875rem 1.125rem;
    border-radius: var(--dt-radius-sm);
    font-size: 0.9rem;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    animation: dtFadeIn 0.3s ease;
}

.dt-branch-outcome i {
    flex-shrink: 0;
    margin-top: 2px;
    font-size: 0.875rem;
}

.dt-branch-outcome.yes-outcome {
    background: var(--dt-yes-bg);
    border: 1px solid var(--dt-yes-border);
    color: #065f46;
}

.dt-branch-outcome.yes-outcome i {
    color: var(--dt-yes-color);
}

.dt-branch-outcome.no-outcome {
    background: var(--dt-no-bg);
    border: 1px solid var(--dt-no-border);
    color: #92400e;
}

.dt-branch-outcome.no-outcome i {
    color: var(--dt-no-color);
}

/* ========================================
   RESULTS / SUMMARY SECTION
   ======================================== */

.dt-results-section {
    margin-top: 2rem;
    animation: dtStepSlideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.dt-results-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.dt-results-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dt-dark);
    margin: 0 0 0.25rem;
}

.dt-results-header p {
    font-size: 0.9375rem;
    color: var(--dt-text-light);
    margin: 0;
}

/* Stop Conditions */
.dt-stop-conditions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.dt-stop-card {
    padding: 1rem 1.25rem;
    border-radius: var(--dt-radius-sm);
    border-left: 4px solid;
    font-size: 0.9rem;
    line-height: 1.5;
}

.dt-stop-card .dt-stop-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.375rem;
}

.dt-stop-card.malicious {
    background: var(--dt-malicious-bg);
    border-left-color: var(--dt-malicious);
    color: #991b1b;
}

.dt-stop-card.malicious .dt-stop-label {
    color: var(--dt-malicious);
}

.dt-stop-card.benign {
    background: var(--dt-benign-bg);
    border-left-color: var(--dt-benign);
    color: #065f46;
}

.dt-stop-card.benign .dt-stop-label {
    color: var(--dt-benign);
}

.dt-stop-card.escalate {
    background: var(--dt-escalate-bg);
    border-left-color: var(--dt-escalate);
    color: #9a3412;
}

.dt-stop-card.escalate .dt-stop-label {
    color: var(--dt-escalate);
}

/* Pitfalls */
.dt-pitfalls {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: var(--dt-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.dt-pitfalls-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 700;
    color: #92400e;
    margin-bottom: 0.75rem;
}

.dt-pitfalls-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.dt-pitfalls-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: #78350f;
    line-height: 1.5;
}

.dt-pitfalls-list li::before {
    content: '\f071';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 0.6875rem;
    color: #d97706;
}

/* Scoring Rubric */
.dt-rubric {
    background: var(--dt-bg);
    border: 1px solid var(--dt-border);
    border-radius: var(--dt-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.dt-rubric-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--dt-dark);
    margin-bottom: 0.75rem;
}

.dt-rubric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.dt-rubric-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    border-radius: var(--dt-radius-sm);
    font-size: 0.8125rem;
    color: var(--dt-text);
}

.dt-rubric-points {
    font-weight: 700;
    color: var(--dt-primary);
    font-size: 0.9375rem;
    min-width: 28px;
}

/* ========================================
   ANSWER KEY TOGGLE (Full Analysis)
   ======================================== */

.dt-answer-key-toggle-wrap {
    margin-bottom: 1.5rem;
}

.dt-answer-key-toggle {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    width: 100%;
    padding: 0.875rem 1.125rem;
    background: #f0f4ff;
    border: 1px solid #c7d2fe;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #4338ca;
    transition: all 0.2s ease;
}

.dt-answer-key-toggle:hover {
    background: #e0e7ff;
    border-color: #a5b4fc;
}

.dt-answer-key-toggle .dt-toggle-icon {
    margin-left: auto;
    font-size: 0.75rem;
    transition: transform 0.25s ease;
}

.dt-answer-key-toggle .dt-toggle-icon.open {
    transform: rotate(180deg);
}

.dt-answer-key {
    overflow: hidden;
    max-height: 3000px;
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
    opacity: 1;
    padding-top: 1rem;
}

.dt-answer-key.collapsed {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
}

.dt-answer-key-section {
    background: var(--dt-bg);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
}

.dt-answer-key-label {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    margin-bottom: 0.375rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dt-answer-key-label i {
    font-size: 0.75rem;
}

.dt-answer-key-value {
    font-size: 0.9375rem;
    color: #1e293b;
    line-height: 1.6;
}

.dt-answer-key-value strong {
    color: #0f172a;
}

/* Optimal Path list */
.dt-path-list {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0;
    counter-reset: path-step;
}

.dt-path-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--dt-text);
    line-height: 1.5;
    counter-increment: path-step;
}

.dt-path-list li::before {
    content: counter(path-step);
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--dt-primary-light);
    color: var(--dt-primary-dark);
    font-size: 0.6875rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Alternate Paths */
.dt-alt-path-list {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0;
}

.dt-alt-path-list li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
    color: var(--dt-text);
    line-height: 1.5;
}

.dt-alt-path-list li::before {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: #6366f1;
    font-size: 0.75rem;
    top: 3px;
}

/* ========================================
   NAVIGATION BUTTONS
   ======================================== */

.dt-nav-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--dt-border);
}

.dt-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--dt-radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.dt-nav-btn:hover {
    transform: translateY(-1px);
}

.dt-nav-btn.primary {
    background: linear-gradient(135deg, var(--dt-primary), var(--dt-primary-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(26, 115, 232, 0.35);
}

.dt-nav-btn.primary:hover {
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.45);
}

.dt-nav-btn.secondary {
    background: #f3f4f6;
    color: var(--dt-text);
}

.dt-nav-btn.secondary:hover {
    background: #e5e7eb;
}

/* ========================================
   CHOICE SUMMARY TIMELINE
   ======================================== */

.dt-choices-summary {
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    border-radius: var(--dt-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.dt-choices-summary-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--dt-dark);
    margin-bottom: 0.75rem;
}

.dt-choice-timeline {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.dt-choice-timeline-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--dt-radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
}

.dt-choice-timeline-item.choice-yes {
    background: var(--dt-yes-bg);
    color: #065f46;
}

.dt-choice-timeline-item.choice-no {
    background: var(--dt-no-bg);
    color: #92400e;
}

.dt-choice-timeline-step {
    font-weight: 700;
    min-width: 48px;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes dtStepSlideIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes dtFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    #dt-app {
        padding: 1rem 0.75rem;
    }

    .dt-progress {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .dt-progress-bar-wrap {
        width: 100%;
        max-width: 100%;
    }

    .dt-grid {
        grid-template-columns: 1fr;
    }

    .dt-choice-buttons {
        grid-template-columns: 1fr;
    }

    .dt-rubric-grid {
        grid-template-columns: 1fr;
    }

    .dt-scenario-title {
        font-size: 1.125rem;
    }

    .dt-log-body {
        font-size: 11px;
        padding: 12px 14px;
    }

    .dt-nav-buttons {
        flex-direction: column;
    }

    .dt-nav-btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .dt-list-header h1 {
        font-size: 1.375rem;
    }

    .dt-step-question {
        font-size: 0.875rem;
    }

    .dt-choice-btn {
        padding: 0.75rem 0.75rem;
        font-size: 0.8125rem;
    }
}