/* DARF System - Main Stylesheet */

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --secondary-color: #6b7280;
    --background: #f9fafb;
    --surface: #ffffff;
    --border: #e5e7eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.online {
    background-color: var(--success-color);
    box-shadow: 0 0 10px var(--success-color);
}

.status-dot.offline {
    background-color: var(--secondary-color);
}

/* Progress Steps */
.progress-container {
    margin-bottom: 3rem;
}

.progress-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    padding: 0 2rem;
}

.progress-steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border);
    z-index: -1;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
}

.step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    transition: all 0.3s ease;
}

.step.active .step-circle {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.step.completed .step-circle {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

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

.step.active .step-label {
    color: var(--primary-color);
    font-weight: 600;
}

/* Stages */
.stage {
    display: none;
    background: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    animation: fadeIn 0.5s ease;
}

.stage.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stage h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.stage-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Loading Indicator */
.loading-indicator {
    text-align: center;
    padding: 3rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Results Box */
.results-box {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.results-box h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.document-preview {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    line-height: 1.8;
    white-space: pre-wrap;
    max-height: 600px;
    overflow-y: auto;
}

/* Toulmin Container */
.toulmin-container {
    max-width: 800px;
    margin: 0 auto;
}

.toulmin-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--background);
    border-radius: 8px;
    margin-bottom: 2rem;
}

.toulmin-question-box {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.toulmin-question-box h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.guidance-text {
    color: var(--text-secondary);
    font-style: italic;
}

.feedback-box {
    background: #fef3c7;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--warning-color);
}

/* Rhetoric Strategies */
.rhetoric-strategies {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.strategy-card {
    padding: 1.5rem;
    border: 2px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.strategy-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.strategy-card input[type="radio"] {
    display: none;
}

.strategy-card input[type="radio"]:checked + label {
    color: var(--primary-color);
}

.strategy-card.selected {
    border-color: var(--primary-color);
    background: #eff6ff;
}

.strategy-card h3 {
    margin-bottom: 0.5rem;
}

.strategy-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Evaluation Scores */
.scores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.score-card {
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--border);
    text-align: center;
}

.score-card h4 {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
}

.score-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.score-value.high {
    color: var(--success-color);
}

.score-value.medium {
    color: var(--warning-color);
}

.score-value.low {
    color: var(--danger-color);
}

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

.evaluation-feedback {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.evaluation-feedback h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.evaluation-feedback ul {
    list-style: none;
    padding-left: 0;
}

.evaluation-feedback li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.evaluation-feedback li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* Final Document */
.final-document {
    margin-bottom: 2rem;
}

.summary-box {
    background: var(--background);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.summary-box h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 4rem;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .header h1 {
        font-size: 1.8rem;
    }

    .progress-steps {
        flex-wrap: wrap;
        gap: 1rem;
    }

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

    .strategy-card {
        min-width: 100%;
    }

    .action-buttons {
        flex-direction: column;
    }
}