/* Academic Theme Color Scheme */
:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --accent-blue: #60a5fa;
    --dark-gray: #1f2937;
    --medium-gray: #4b5563;
    --light-gray: #9ca3af;
    --lighter-gray: #e5e7eb;
    --background: #f9fafb;
    --white: #ffffff;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #d1d5db;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px var(--shadow);
    text-align: center;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.2em;
    margin-bottom: 15px;
    opacity: 0.95;
}

.attribution {
    font-size: 0.9em;
    opacity: 0.85;
    font-style: italic;
    margin-top: 10px;
}

/* Main Content */
.main-content {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow);
}

/* Form Styles */
.case-study-form {
    max-width: 100%;
}

.form-section {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--lighter-gray);
}

.form-section:last-child {
    border-bottom: none;
}

.form-section h2 {
    color: var(--primary-blue);
    font-size: 1.8em;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--accent-blue);
}

.form-group {
    margin-bottom: 25px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1em;
}

.required {
    color: var(--error);
}

input[type="text"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    font-family: inherit;
    transition: border-color 0.3s, box-shadow 0.3s;
    background-color: var(--white);
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* Range Sliders */
input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--lighter-gray);
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-blue);
    cursor: pointer;
    box-shadow: 0 2px 4px var(--shadow);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-blue);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px var(--shadow);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 0.85em;
    color: var(--text-secondary);
}

/* Checkbox Group */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 10px;
    border: 2px solid var(--lighter-gray);
    border-radius: 6px;
    transition: all 0.3s;
}

.checkbox-label:hover {
    background-color: var(--lighter-gray);
    border-color: var(--accent-blue);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"]:checked + span {
    font-weight: 600;
    color: var(--primary-blue);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow);
}

.btn-primary:disabled {
    background-color: var(--light-gray);
    cursor: not-allowed;
    transform: none;
}

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

.btn-secondary:hover {
    background-color: #374151;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow);
}

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

.btn-export {
    background-color: var(--success);
    color: var(--white);
    margin-left: 10px;
}

.btn-export:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow);
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    justify-content: center;
}

/* Loading Indicator */
.loading-indicator {
    text-align: center;
    padding: 40px;
    background: var(--white);
    border-radius: 8px;
    margin-top: 30px;
}

.spinner {
    border: 4px solid var(--lighter-gray);
    border-top: 4px solid var(--secondary-blue);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.progress-info {
    margin-top: 15px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* Error Container */
.error-container {
    background-color: #fee2e2;
    border: 2px solid var(--error);
    color: #991b1b;
    padding: 15px 20px;
    border-radius: 6px;
    margin-top: 20px;
    font-weight: 500;
}

.error-message {
    background-color: #fee2e2;
    border: 2px solid var(--error);
    color: #991b1b;
    padding: 20px;
    border-radius: 6px;
    text-align: center;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 15px 25px;
    border-radius: 6px;
    box-shadow: 0 4px 12px var(--shadow-lg);
    z-index: 1000;
    min-width: 250px;
    animation: slideIn 0.3s ease-out;
}

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

.toast-error {
    background-color: var(--error);
}

.toast-warning {
    background-color: var(--warning);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Case Study Display */
.result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--lighter-gray);
}

.export-buttons {
    margin-left: auto;
    display: flex;
    gap: 10px;
}

.case-study-container {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow);
}

.case-study {
    max-width: 100%;
}

.case-study-title {
    color: var(--primary-blue);
    font-size: 2.2em;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 4px solid var(--accent-blue);
    text-align: center;
}

.case-study-section {
    margin-bottom: 40px;
    padding: 25px;
    background: var(--background);
    border-radius: 6px;
    border-left: 4px solid var(--secondary-blue);
}

.case-study-section h2 {
    color: var(--primary-blue);
    font-size: 1.6em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--lighter-gray);
}

.narrative-content,
.theoretical-content,
.instructor-notes {
    line-height: 1.8;
    font-size: 1.05em;
    color: var(--text-primary);
}

.narrative-content p,
.theoretical-content p {
    margin-bottom: 15px;
}

.narrative-content table,
.theoretical-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: var(--white);
    box-shadow: 0 2px 4px var(--shadow);
}

.narrative-content table th,
.theoretical-content table th {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 12px;
    text-align: left;
    font-weight: 600;
}

.narrative-content table td,
.theoretical-content table td {
    padding: 12px;
    border-bottom: 1px solid var(--lighter-gray);
}

.narrative-content table tr:hover,
.theoretical-content table tr:hover {
    background-color: var(--lighter-gray);
}

/* Lists */
.discussion-questions,
.discussion-flow,
.model-answers {
    list-style-position: inside;
    padding-left: 20px;
}

.discussion-questions li,
.discussion-flow li,
.model-answers li {
    margin-bottom: 15px;
    padding-left: 10px;
    line-height: 1.7;
}

.key-takeaways,
.common-mistakes,
.editing-suggestions {
    list-style-type: disc;
    padding-left: 30px;
}

.key-takeaways li,
.common-mistakes li,
.editing-suggestions li {
    margin-bottom: 12px;
    line-height: 1.7;
}

/* Teaching Note */
.teaching-note {
    display: grid;
    gap: 20px;
}

.teaching-note-item {
    background: var(--white);
    padding: 20px;
    border-radius: 6px;
    border: 1px solid var(--lighter-gray);
}

.teaching-note-item h3 {
    color: var(--primary-blue);
    font-size: 1.3em;
    margin-bottom: 10px;
}

/* Rubric Table */
.rubric-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: var(--white);
    box-shadow: 0 2px 4px var(--shadow);
}

.rubric-table th {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.rubric-table td {
    padding: 15px;
    border-bottom: 1px solid var(--lighter-gray);
}

.rubric-table tr:hover {
    background-color: var(--lighter-gray);
}

/* Edit Mode */
[contenteditable="true"] {
    outline: 2px dashed var(--accent-blue);
    padding: 5px;
    border-radius: 4px;
    min-height: 20px;
}

[contenteditable="true"]:focus {
    outline: 2px solid var(--secondary-blue);
    background-color: #eff6ff;
}

/* Batch Navigation */
.batch-navigation {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 30px;
    padding: 20px;
    background: var(--background);
    border-radius: 6px;
}

#caseCounter {
    font-weight: 600;
    color: var(--primary-blue);
    font-size: 1.1em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .header {
        padding: 20px;
    }

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

    .subtitle {
        font-size: 1em;
    }

    .main-content {
        padding: 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .checkbox-group {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
    }

    .result-actions {
        flex-direction: column;
    }

    .export-buttons {
        margin-left: 0;
        flex-direction: column;
        width: 100%;
    }

    .btn-export {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
    }

    .case-study-title {
        font-size: 1.6em;
    }

    .case-study-section {
        padding: 15px;
    }

    .narrative-content table,
    .theoretical-content table,
    .rubric-table {
        font-size: 0.9em;
        display: block;
        overflow-x: auto;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5em;
    }

    .attribution {
        font-size: 0.8em;
    }

    .case-study-title {
        font-size: 1.4em;
    }

    .toast {
        right: 10px;
        left: 10px;
        min-width: auto;
    }
}

/* Print Styles */
@media print {
    .result-actions,
    .batch-navigation {
        display: none;
    }

    .case-study-section {
        page-break-inside: avoid;
    }
}