/* ============================================
    Info Buttons
    ============================================ */
.info-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.info-btn {
    flex: 1 1 auto;
    min-width: fit-content;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6875rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.info-btn:hover {
    background: var(--bg-input);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

/* ============================================
    Modal
    ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 20, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 24px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    max-width: 700px;
    width: 100%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--bg-input);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.modal-body h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    margin: 20px 0 12px;
    color: var(--accent-primary);
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p {
    margin-bottom: 12px;
}

.modal-body ul, .modal-body ol {
    margin: 12px 0;
    padding-left: 24px;
}

.modal-body li {
    margin-bottom: 6px;
}

.modal-body code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    background: var(--bg-input);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--accent-info);
}

.modal-body .equation {
    display: block;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-primary);
    padding: 16px 20px;
    border-radius: 8px;
    margin: 16px 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    text-align: center;
    color: var(--text-primary);
}

.modal-body .warning-box {
    background: var(--accent-warning-dim);
    border: 1px solid rgba(234, 179, 8, 0.3);
    border-radius: 8px;
    padding: 14px 18px;
    margin: 16px 0;
    font-size: 0.875rem;
}

.modal-body .warning-box strong {
    color: var(--accent-warning);
}

.modal-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 0.8125rem;
}

.modal-body th, .modal-body td {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.modal-body th {
    background: var(--bg-secondary);
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.modal-body td {
    color: var(--text-primary);
}

.modal-body a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: opacity 0.15s;
}

.modal-body a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* ============================================
    Disclaimer & Footer
    ============================================ */
.disclaimer-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}

.disclaimer-content {
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
    text-align: center;
    opacity: 0.8;
}

.disclaimer-content strong {
    color: var(--text-secondary);
    font-weight: 600;
}

footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
    margin-top: 0;
}

.footer-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 16px;
    font-size: 0.8125rem;
    transition: color 0.15s;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

/* ============================================
    Disclaimer Box
    ============================================ */
.disclaimer-box {
    background: var(--accent-warning-dim);
    border: 1px solid var(--accent-warning);
    border-left: 4px solid var(--accent-warning);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
}

.disclaimer-title {
    color: var(--accent-warning);
    font-size: 0.75rem;
    text-transform: uppercase;
    margin-bottom: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.05em;
}

.disclaimer-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.disclaimer-text p {
    margin-bottom: 8px;
}

.disclaimer-text p:last-child {
    margin-bottom: 0;
}

.disclaimer-text strong {
    color: var(--text-primary);
}

/* ============================================
    Responsive
    ============================================ */
@media (max-width: 768px) {
    .toggle-grid {
        grid-template-columns: 1fr;
    }

    .process-state-grid {
        grid-template-columns: 1fr;
    }

    .info-buttons {
        grid-template-columns: repeat(2, 1fr);
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ========================================
    VALIDATION MODAL STYLES
    ======================================== */
.validation-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.validation-modal.active {
    opacity: 1;
    visibility: visible;
}

.validation-content {
    background: var(--bg-card);
    border-radius: 12px;
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
}

.validation-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.validation-header h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-primary);
}

.validation-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
}

.validation-close:hover {
    background: var(--bg-input);
    color: var(--text-primary);
}

.validation-summary {
    padding: 16px 24px;
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--border-color);
}

.validation-results {
    padding: 16px 24px;
    overflow-y: auto;
    flex: 1;
}

.validation-test {
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    border: 1px solid;
}

.validation-test.passed {
    background: rgba(34, 197, 94, 0.1);
    border-color: var(--accent-success);
}

.validation-test.failed {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-error);
}

.validation-test:last-child {
    margin-bottom: 0;
}

.validation-test-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.validation-test-name {
    font-weight: 600;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-primary);
}

.validation-test-status {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    font-weight: 600;
}

.validation-test.passed .validation-test-status {
    color: var(--accent-success);
}

.validation-test.failed .validation-test-status {
    color: var(--accent-error);
}

.validation-test-inputs {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.validation-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.validation-table th,
.validation-table td {
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.validation-table th {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    color: var(--text-secondary);
}

.validation-table td {
    font-family: 'JetBrains Mono', monospace;
}

.validation-table .check-pass {
    color: var(--accent-success);
}

.validation-table .check-fail {
    color: var(--accent-error);
    font-weight: 600;
}

.validation-warning {
    margin-top: 12px;
    padding: 10px 14px;
    background: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--accent-warning);
    border-radius: 4px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.validation-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: flex;
    justify-content: flex-end;
}

.validation-btn {
    padding: 10px 24px;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: opacity 0.15s;
}

.validation-btn:hover {
    opacity: 0.9;
}

/* ========================================
    CALCULATION TRAIL STYLES
    ======================================== */
.calc-trail-section {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.calc-trail-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.calc-trail-section h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin: 0 0 12px 0;
}

.calc-step {
    background: var(--bg-input);
    border-radius: 6px;
    padding: 12px;
    border-left: 3px solid var(--accent-primary);
}

.step-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    flex-wrap: wrap;
    gap: 8px;
}

.step-formula {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 8px;
}

.step-inputs {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.step-calc {
    margin-top: 8px;
}

.step-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.step-input {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: var(--text-primary);
}

.step-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.step-result {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-success);
}

.trail-copy-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8125rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.15s;
}

.trail-copy-btn:hover {
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
}