/**
 * Tool page shared styles.
 * Covers the tool hub and legacy tool page layout compatibility.
 */

/* ==========================================
   Tools hub
   ========================================== */
.tools-hub {
    --tools-surface: rgba(255, 255, 255, 0.78);
    --tools-surface-strong: rgba(255, 255, 255, 0.92);
    --tools-border: rgba(224, 122, 95, 0.14);
    --tools-muted-border: rgba(61, 90, 128, 0.12);
    --tools-soft: rgba(247, 245, 240, 0.86);
    padding: var(--space-8) 0 var(--space-16);
    background: linear-gradient(180deg, rgba(247, 245, 240, 0.94) 0%, rgba(253, 251, 247, 1) 100%);
}

:root[data-theme="dark"] .tools-hub {
    --tools-surface: rgba(34, 28, 25, 0.84);
    --tools-surface-strong: rgba(30, 24, 21, 0.96);
    --tools-border: rgba(240, 154, 122, 0.16);
    --tools-muted-border: rgba(169, 191, 222, 0.14);
    --tools-soft: rgba(26, 22, 20, 0.88);
    background: linear-gradient(180deg, rgba(23, 19, 17, 0.98) 0%, rgba(34, 28, 25, 1) 100%);
}

.tools-hero,
.tools-section,
.tools-cta {
    background: var(--tools-surface);
    border: 1px solid var(--tools-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
}

.tools-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
    gap: var(--space-6);
    align-items: end;
    padding: var(--space-8);
    margin-bottom: var(--space-6);
}

.tools-kicker,
.tools-count-chip,
.tool-card-badge {
    display: inline-flex;
    align-items: center;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
}

.tools-kicker {
    padding: 6px 12px;
    margin-bottom: var(--space-3);
    background: rgba(224, 122, 95, 0.14);
    color: var(--color-primary-dark);
}

.tools-hero h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(2.1rem, 4vw, 3.2rem);
    line-height: 1.05;
}

.tools-hero p,
.tools-section-heading p,
.tool-card p,
.tools-cta p {
    color: var(--color-text-secondary);
}

.tools-hero p,
.tools-section-heading p,
.tools-cta p {
    margin: var(--space-2) 0 0;
}

.tools-journey {
    display: grid;
    gap: var(--space-3);
}

.tools-journey div {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: var(--space-3);
    min-height: 56px;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-xl);
    background: var(--tools-surface-strong);
    border: 1px solid var(--tools-muted-border);
}

.tools-journey strong {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: rgba(224, 122, 95, 0.14);
    color: var(--color-primary-dark);
}

.tools-section {
    padding: clamp(var(--space-6), 3vw, var(--space-8));
    margin-bottom: var(--space-6);
}

.tools-section-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.tools-section-heading h2,
.tools-cta h2,
.tool-card h3 {
    margin: 0;
}

.tools-count-chip,
.tool-card-badge {
    padding: 6px 11px;
    background: rgba(224, 122, 95, 0.12);
    color: var(--color-primary-dark);
    white-space: nowrap;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-4);
}

.tool-card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    padding: var(--space-5);
    border-radius: var(--radius-xl);
    background: var(--tools-surface-strong);
    border: 1px solid var(--tools-muted-border);
    color: var(--color-text);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.tool-card:hover {
    transform: translateY(-2px);
    border-color: var(--tools-border);
    box-shadow: var(--shadow-md);
    color: var(--color-text);
}

.tool-card-featured {
    border-color: rgba(224, 122, 95, 0.28);
}

.tool-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.tool-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    border-radius: 18px;
    background: rgba(224, 122, 95, 0.12);
    color: var(--color-primary-dark);
    flex-shrink: 0;
}

.tool-card-icon svg {
    width: 24px;
    height: 24px;
}

.tool-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.tool-card p {
    line-height: 1.7;
    margin: 0 0 var(--space-5);
}

.tool-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: auto;
    margin-bottom: var(--space-5);
}

.tool-card-tags span {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: var(--radius-full);
    background: var(--tools-soft);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.tool-card-action {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    font-weight: var(--font-semibold);
}

.tool-card-action svg,
.tools-cta .btn svg {
    width: 16px;
    height: 16px;
}

.tools-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-5);
    padding: var(--space-6) var(--space-8);
}

.tools-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    white-space: nowrap;
}

@media (max-width: 900px) {
    .tools-hero {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .tools-hub {
        padding: var(--space-6) 0 var(--space-12);
    }

    .tools-hero,
    .tools-section,
    .tools-cta {
        padding: var(--space-6);
    }

    .tools-section-heading,
    .tools-cta {
        flex-direction: column;
        align-items: flex-start;
    }

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

/* ==========================================
   Tool base layout
   ========================================== */
/* ==========================================
   Tool Page Layout
   ========================================== */
.tool-page {
    padding: var(--space-8) 0;
}

.tool-header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.tool-header-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
}

.tool-header-icon i {
    width: 32px;
    height: 32px;
}

.tool-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-3);
}

.tool-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Cards
   ========================================== */
.tool-page .card {
    border: 1px solid var(--color-bg-muted);
    border-radius: var(--radius-xl);
    box-shadow: none;
    transition: box-shadow var(--transition-base);
    background: var(--color-bg);
}

.tool-page .card:hover {
    box-shadow: var(--shadow-md);
}

.tool-page .card-header {
    background: var(--color-bg-subtle);
    border-bottom: 1px solid var(--color-bg-muted);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-4) var(--space-5);
}

.tool-page .card-body {
    padding: var(--space-5);
}

/* ==========================================
   Legacy Tool Grid Compatibility
   ========================================== */
.tool-page .row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-4);
}

.tool-page .g-3 { gap: var(--space-3); }
.tool-page .g-4 { gap: var(--space-4); }

.tool-page .col-12 { grid-column: span 12; }
.tool-page .col-6 { grid-column: span 6; }

.tool-page .col-sm-6,
.tool-page .col-md-3,
.tool-page .col-md-4,
.tool-page .col-md-6,
.tool-page .col-lg-4,
.tool-page .col-lg-5,
.tool-page .col-lg-7,
.tool-page .col-lg-8 {
    grid-column: span 12;
}

@media (min-width: 640px) {
    .tool-page .col-sm-6 { grid-column: span 6; }
}

@media (min-width: 768px) {
    .tool-page .col-md-3 { grid-column: span 3; }
    .tool-page .col-md-4 { grid-column: span 4; }
    .tool-page .col-md-6 { grid-column: span 6; }
}

@media (min-width: 1024px) {
    .tool-page .col-lg-4 { grid-column: span 4; }
    .tool-page .col-lg-5 { grid-column: span 5; }
    .tool-page .col-lg-7 { grid-column: span 7; }
    .tool-page .col-lg-8 { grid-column: span 8; }
}

/* ==========================================
   Forms
   ========================================== */
.tool-page .form-control,
.tool-page .form-select {
    display: block;
    width: 100%;
    border: 2px solid var(--color-bg-muted);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    font-family: inherit;
    font-size: var(--text-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: all var(--transition-base);
    outline: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    box-sizing: border-box;
}

.tool-page select.form-control {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23666' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px 12px;
    padding-right: 36px;
}

.tool-page .form-control:focus,
.tool-page .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.tool-page .form-control::placeholder {
    color: var(--color-text-muted);
}

.tool-page .form-label {
    display: block;
    font-weight: var(--font-medium);
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.tool-page .form-group {
    margin-bottom: var(--space-5);
}

.tool-page .form-text {
    display: block;
    margin-top: var(--space-1);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.tool-page .form-range {
    width: 100%;
    accent-color: var(--color-primary);
}

/* Checkbox */
.tool-page .form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0;
}

.tool-page .form-check-input {
    width: 18px;
    height: 18px;
    margin: 0;
    border: 2px solid var(--color-bg-muted);
    border-radius: var(--radius-sm);
    cursor: pointer;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.tool-page .form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.tool-page .form-check-label {
    font-size: var(--text-base);
    color: var(--color-text);
    cursor: pointer;
    margin: 0;
}

/* ==========================================
   Buttons (supplement site's .btn styles)
   ========================================== */
.tool-page .btn-outline-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    background: transparent;
    border-radius: var(--radius-xl);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.tool-page .btn-outline-primary:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

.tool-back-link {
    margin-top: var(--space-10);
    text-align: center;
}

.tool-back-link svg {
    width: 16px;
    height: 16px;
}

.tool-action-bar {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tool-inline-icon {
    width: 14px;
    height: 14px;
    margin-right: 4px;
    flex-shrink: 0;
}

.tool-icon-sm {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.tool-icon-md {
    width: 18px;
    height: 18px;
    margin-right: 8px;
}

.tool-chart-canvas {
    width: 100%;
    height: 300px;
}

.tool-chart-canvas-lg {
    height: 400px;
}

.tool-page .input-group {
    display: flex;
    align-items: stretch;
}

.tool-page .input-group .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.tool-page .input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.tool-page .btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
}

.tool-page .btn-success,
.tool-page .btn-danger,
.tool-page .btn-outline-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-weight: var(--font-medium);
    cursor: pointer;
    text-decoration: none;
}

.tool-page .btn-success {
    border: 1px solid var(--color-success);
    background: var(--color-success);
    color: white;
}

.tool-page .btn-danger {
    border: 1px solid var(--color-primary);
    background: var(--color-primary);
    color: white;
}

.tool-page .btn-outline-secondary {
    border: 1px solid var(--color-bg-muted);
    background: transparent;
    color: var(--color-text-secondary);
}

.tool-page .btn-outline-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.portfolio-col-symbol,
.portfolio-col-weight {
    width: 40%;
}

.portfolio-col-action {
    width: 20%;
}

.tool-accordion-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-bg-muted);
}

.tool-page .accordion-button {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    border: 0;
    background: var(--color-bg-subtle);
    color: var(--color-text);
    font: inherit;
    font-weight: var(--font-semibold);
    text-align: left;
    cursor: pointer;
}

.tool-page .accordion-body {
    padding: var(--space-5);
}

.tool-page .collapse:not(.show) {
    display: none;
}

.strategy-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
}

.tool-page .nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    list-style: none;
    padding: 0;
    margin: 0;
}

.tool-page .nav-link {
    cursor: pointer;
    background: transparent;
}

.tool-page .tab-pane {
    display: none;
}

.tool-page .tab-pane.active {
    display: block;
}

/* ==========================================
   Signal tools and backtest workflow
   ========================================== */
.signals-toolbar {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.signals-summary,
.signal-model-grid,
.signal-indicator-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.signal-model-grid,
.signal-indicator-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.signal-summary-card,
.signal-content-brief,
.signal-banner,
.signal-side-card,
.signal-model-card,
.signal-indicator-card {
    padding: var(--space-5);
    border-radius: var(--radius-xl);
    background: var(--color-bg);
    border: 1px solid var(--color-bg-muted);
}

.signal-summary-card,
.signal-side-card,
.signal-content-brief {
    background: var(--color-bg-subtle);
}

.signal-content-brief {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.signal-content-brief h3 {
    margin: 0 0 var(--space-2);
}

.signal-content-brief p {
    margin: 0;
    color: var(--color-text-secondary);
}

.signal-brief-grid,
.signal-brief-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.signal-brief-grid span {
    display: inline-flex;
    padding: 7px 12px;
    border-radius: var(--radius-full);
    background: rgba(224, 122, 95, 0.12);
    color: var(--color-primary-dark);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.signal-brief-list a {
    display: grid;
    gap: var(--space-1);
    min-width: min(260px, 100%);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    color: var(--color-text);
    text-decoration: none;
}

.signal-brief-list small {
    color: var(--color-text-secondary);
}

.signal-summary-label,
.indicator-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: var(--space-2);
}

.signal-summary-value,
.indicator-value {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    margin: 0;
}

.signal-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.signal-chip-buy { background: rgba(72, 143, 95, 0.12); color: #2f6f47; }
.signal-chip-hold { background: rgba(61, 90, 128, 0.12); color: #3d5a80; }
.signal-chip-neutral { background: rgba(174, 130, 64, 0.12); color: #8a6631; }
.signal-chip-exit_watch { background: rgba(224, 122, 95, 0.12); color: #c05b42; }
.signal-chip-unavailable { background: rgba(120, 120, 120, 0.12); color: #666; }

.signals-table td,
.signals-table th {
    vertical-align: middle;
}

.signals-table .summary-cell {
    min-width: 260px;
    color: var(--color-text-secondary);
}

.signals-table a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: var(--font-semibold);
}

.signal-hero {
    display: grid;
    grid-template-columns: 1.2fr .8fr;
    gap: var(--space-5);
    margin-bottom: var(--space-6);
}

.signal-banner h3 {
    margin-bottom: var(--space-2);
}

.signal-banner p:last-child {
    margin-bottom: 0;
}

.condition-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: var(--space-2);
}

.condition-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.condition-badge {
    font-size: var(--text-xs);
    padding: 4px 8px;
    border-radius: 999px;
}

.condition-badge.met { background: rgba(72, 143, 95, 0.12); color: #2f6f47; }
.condition-badge.not-met { background: rgba(224, 122, 95, 0.12); color: #c05b42; }

.signal-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-4);
    flex-wrap: wrap;
}

.strategy-form,
.loading-indicator {
    display: none;
}

.strategy-form.active {
    display: block;
}

.loading-indicator {
    text-align: center;
    margin: 20px 0;
}

.metric-card {
    background: var(--color-bg-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    text-align: center;
    height: 100%;
}

.metric-card h6 {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
}

.metric-card .metric-value {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-text);
}

.metric-card .metric-value.positive {
    color: var(--color-success);
}

.metric-card .metric-value.negative {
    color: var(--color-primary);
}

.strategy-guide-btn {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
}

.strategy-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.strategy-option {
    flex: 1;
    min-width: 120px;
}

.strategy-option .form-check-input:checked + .form-check-label {
    color: var(--color-primary);
    font-weight: var(--font-medium);
}

.result-tabs .nav-link {
    color: var(--color-text-secondary);
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    padding: var(--space-3) var(--space-4);
}

.result-tabs .nav-link:hover {
    color: var(--color-text);
    border-color: var(--color-bg-muted);
}

.result-tabs .nav-link.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: transparent;
}

#backtestResults .card {
    border: 1px solid var(--color-bg-muted);
}

#backtestResults .card-header {
    background: var(--color-bg-subtle);
    border-bottom: 1px solid var(--color-bg-muted);
    font-weight: var(--font-medium);
}

@media (max-width: 992px) {
    .signals-toolbar,
    .signals-summary {
        grid-template-columns: 1fr 1fr;
    }

    .signal-hero,
    .signal-model-grid,
    .signal-indicator-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .signals-toolbar,
    .signals-summary {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   Results
   ========================================== */
.tool-results {
    background: var(--color-bg-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-top: var(--space-6);
}

.tool-results h3,
.tool-results h4 {
    color: var(--color-text);
}

.result-stat {
    text-align: center;
    padding: var(--space-4);
}

.result-stat-value {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
}

.result-stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ==========================================
   Charts
   ========================================== */
.chart-container {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

/* ==========================================
   Tables
   ========================================== */
.tool-page .table {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tool-page .table-responsive {
    width: 100%;
    overflow-x: auto;
}

.tool-page .table thead th {
    background: var(--color-bg-subtle);
    border-bottom: 2px solid var(--color-bg-muted);
    font-weight: var(--font-semibold);
    padding: var(--space-3) var(--space-4);
    text-align: left;
}

.tool-page .table td {
    border-bottom: 1px solid var(--color-bg-muted);
    padding: var(--space-3) var(--space-4);
}

.tool-page .table-sm th,
.tool-page .table-sm td {
    padding: var(--space-2) var(--space-3);
}

.tool-page .table-striped tbody tr:nth-child(odd) {
    background: var(--color-bg-subtle);
}

/* ==========================================
   Alerts
   ========================================== */
.tool-page .alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    border: none;
    margin-bottom: var(--space-4);
}

.tool-page .alert-info {
    background: var(--color-info-light);
    color: var(--color-accent);
}

.tool-page .alert-success {
    background: var(--color-success-light);
    color: var(--color-success);
}

.tool-page .alert-warning {
    background: var(--color-warning-light);
    color: #996600;
}

/* ==========================================
   Utility Classes
   ========================================== */
.tool-page .text-center { text-align: center; }
.tool-page .text-end { text-align: right; }
.tool-page .text-primary { color: var(--color-primary); }
.tool-page .text-muted { color: var(--color-text-muted); }
.tool-page .text-white { color: #fff; }
.tool-page .small { font-size: var(--text-sm); }
.tool-page .fw-bold { font-weight: var(--font-bold); }
.tool-page .fw-medium { font-weight: var(--font-medium); }
.tool-page .bg-primary { background: var(--color-primary); }
.tool-page .mb-0 { margin-bottom: 0; }
.tool-page .mb-2 { margin-bottom: var(--space-2); }
.tool-page .mb-3 { margin-bottom: var(--space-3); }
.tool-page .mb-4 { margin-bottom: var(--space-4); }
.tool-page .mb-5 { margin-bottom: var(--space-5); }
.tool-page .mt-2 { margin-top: var(--space-2); }
.tool-page .mt-3 { margin-top: var(--space-3); }
.tool-page .mt-4 { margin-top: var(--space-4); }
.tool-page .mt-5 { margin-top: var(--space-5); }
.tool-page .py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.tool-page .w-100 { width: 100%; }
.tool-page .d-none { display: none !important; }
.tool-page .d-flex { display: flex; }
.tool-page .justify-content-between { justify-content: space-between; }
.tool-page .justify-content-center { justify-content: center; }
.tool-page .align-items-start { align-items: flex-start; }
.tool-page .align-items-center { align-items: center; }
.tool-page .align-items-end { align-items: flex-end; }
.tool-page .border-bottom { border-bottom: 1px solid var(--color-bg-muted); }
.tool-page .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.tool-page .spinner-border {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--color-primary-light);
    border-top-color: var(--color-primary);
    border-radius: 999px;
    animation: tool-spin 0.8s linear infinite;
}
.tool-page .btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

@keyframes tool-spin {
    to { transform: rotate(360deg); }
}