/* ================================
   FSE Demo Page Styles
   ================================ */

/* Demo Container */
.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

@media (max-width: 1000px) {
    .demo-container {
        grid-template-columns: 1fr;
    }
}

/* Form Section */
.demo-form-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
}

.demo-form-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Form Styles */
.demo-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a0a0b0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Input with unit */
.input-with-unit {
    display: flex;
    align-items: stretch;
}

.input-with-unit input {
    border-radius: 8px 0 0 8px;
    flex: 1;
}

.input-with-unit .unit {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-left: none;
    border-radius: 0 8px 8px 0;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
}

/* Submit Button */
.demo-submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-top: 0.5rem;
}

.demo-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
}

.demo-submit-btn:active {
    transform: translateY(0);
}

.demo-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.demo-submit-btn svg {
    width: 20px;
    height: 20px;
}

.demo-submit-btn.loading .btn-text {
    display: none;
}

.demo-submit-btn.loading::after {
    content: 'Generating...';
}

.demo-submit-btn.loading .btn-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Results Section */
.demo-results-section {
    position: sticky;
    top: 100px;
}

.demo-results-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

.loading-state p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Prediction Cards */
.prediction-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.25rem;
}

.prediction-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.prediction-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.prediction-icon.cost {
    background: rgba(16, 185, 129, 0.1);
}

.prediction-icon.cost svg {
    stroke: var(--success);
    width: 24px;
    height: 24px;
}

.prediction-icon.duration {
    background: rgba(59, 130, 246, 0.1);
}

.prediction-icon.duration svg {
    stroke: var(--accent);
    width: 24px;
    height: 24px;
}

.prediction-header h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.prediction-main {
    text-align: center;
    margin-bottom: 1.5rem;
}

.prediction-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Confidence Intervals */
.confidence-intervals {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.interval {
    text-align: center;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.interval.primary {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.interval-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.interval-value {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Chart Card */
.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.25rem;
}

.chart-card h3 {
    font-size: 1rem;
    margin-bottom: 1.25rem;
    text-align: center;
}

.breakdown-chart {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.breakdown-item {
    display: grid;
    grid-template-columns: 120px 1fr 80px;
    gap: 0.75rem;
    align-items: center;
}

.breakdown-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.breakdown-bar-container {
    background: var(--bg-secondary);
    border-radius: 6px;
    height: 20px;
    overflow: hidden;
}

.breakdown-bar {
    height: 100%;
    border-radius: 6px;
    transition: width 0.8s ease;
}

.breakdown-bar.labor { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.breakdown-bar.materials { background: linear-gradient(90deg, #10b981, #34d399); }
.breakdown-bar.equipment { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.breakdown-bar.overhead { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.breakdown-bar.contingency { background: linear-gradient(90deg, #ef4444, #f87171); }

.breakdown-value {
    font-size: 0.9rem;
    font-weight: 600;
    text-align: right;
}

/* Risks Card */
.risks-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.25rem;
}

.risks-card h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.risks-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.risk-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.risk-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.risk-icon.high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.risk-icon.medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.risk-icon.low {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.risk-icon svg {
    width: 14px;
    height: 14px;
}

.risk-content {
    flex: 1;
}

.risk-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.risk-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Analysis Card */
.analysis-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.25rem;
}

.analysis-card h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.analysis-content {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.analysis-content p {
    margin-bottom: 1rem;
}

.analysis-content p:last-child {
    margin-bottom: 0;
}

/* Disclaimer */
.demo-disclaimer {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.demo-disclaimer strong {
    color: var(--warning);
}

/* Try Again Button */
.try-again-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem;
    background: transparent;
    border: 2px solid var(--accent);
    border-radius: 12px;
    color: var(--accent-light);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.try-again-btn:hover {
    background: rgba(59, 130, 246, 0.1);
}

.try-again-btn svg {
    width: 20px;
    height: 20px;
}

/* API Key Modal */
.api-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 1rem;
}

.api-modal.hidden {
    display: none;
}

.api-modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    max-width: 450px;
    width: 100%;
}

.api-modal-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    text-align: center;
}

.api-modal-content > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.api-key-input-wrapper {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.api-key-input-wrapper input {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--text-primary);
    font-family: monospace;
}

.api-key-input-wrapper input:focus {
    outline: none;
    border-color: var(--accent);
}

.api-key-input-wrapper button {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.api-key-input-wrapper button:hover {
    color: var(--text-primary);
}

.api-key-input-wrapper button svg {
    width: 20px;
    height: 20px;
}

.api-modal-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.api-modal-buttons button {
    flex: 1;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.secondary-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.primary-btn {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
    color: white;
}

.primary-btn:hover {
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.api-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}

.api-note a {
    color: var(--accent-light);
    text-decoration: none;
}

.api-note a:hover {
    text-decoration: underline;
}

/* Hidden utility */
.hidden {
    display: none !important;
}

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

    .demo-form-section {
        padding: 1.5rem;
    }

    .demo-results-section {
        position: static;
    }

    .prediction-value {
        font-size: 2rem;
    }

    .confidence-intervals {
        grid-template-columns: 1fr;
    }

    .breakdown-item {
        grid-template-columns: 90px 1fr 60px;
    }

    .breakdown-label {
        font-size: 0.75rem;
    }

    .api-modal-content {
        padding: 1.5rem;
    }

    .api-modal-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .demo-form-section {
        padding: 1rem;
    }

    .prediction-card {
        padding: 1rem;
    }

    .prediction-value {
        font-size: 1.75rem;
    }

    .interval-value {
        font-size: 0.85rem;
    }
}