/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    overflow-y: auto;
    animation: fadeIn 0.2s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

@media (max-width: 768px) {
    .modal.show {
        align-items: center;
        padding: 20px;
    }
}

.modal-content {
    background: var(--surface-color);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    width: 95vw;
    max-width: 420px;
    min-width: 220px;
    max-height: 96vh;
    overflow-y: auto;
    animation: slideDown 0.3s ease;
    flex-shrink: 1;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

@media (max-width: 768px) {
    .modal-content {
        margin-top: 0;
    }
}

.modal-large {
    max-width: 800px;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 18px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2563eb 100%);
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    border-bottom: none;
}
}

.modal-header h2 {
    font-size: 13px;
    color: #fff !important;
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.5px;
    line-height: 1.2;
    white-space: nowrap;
}

.close {
    font-size: 28px;
    font-weight: 300;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    border: none;
    background: none;
    line-height: 1;
    transition: color 0.2s;
}

.close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 16px 12px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    flex: 1 1 auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 10px 16px;
    border-top: 1px solid var(--border-color);
    background: var(--background-color);
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
}

/* Lesson Info Section */
.lesson-info-section {
    background: var(--background-color);
    padding: 8px 4px;
    border-radius: 8px;
    display: flex;
    flex-direction: row;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.info-group {
    margin-bottom: 12px;
}

.info-group:last-child {
    margin-bottom: 0;
}

.info-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.info-value {
    font-size: 16px;
    color: var(--text-primary);
    margin: 0;
}

.info-row {
    display: flex;
    flex-direction: row;
    gap: 12px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.info-group {
    display: flex;
    flex-direction: column;
    min-width: 70px;
    margin-right: 8px;
    margin-bottom: 0;
    flex: 0 0 auto;
}
    font-size: 12px;
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    white-space: nowrap;
    font-weight: 500;
}

/* Lesson Plan Section */
.lesson-plan-section h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 16px;
}

/* Form Groups */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    color: var(--text-primary);
    transition: border-color 0.2s;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    font-family: 'Courier New', monospace;
    line-height: 1.5;
}

/* Editor Toolbar */
.editor-toolbar {
    display: flex;
    gap: 4px;
    padding: 8px;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
}

.toolbar-btn {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
    color: var(--text-primary);
}

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

.form-group textarea + .editor-toolbar + textarea {
    border-radius: 0 0 6px 6px;
    border-top: none;
}

/* Resources List */
.resources-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.resource-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--background-color);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.resource-link {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.resource-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.resource-url {
    font-size: 12px;
    color: var(--primary-color);
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.resource-url:hover {
    text-decoration: underline;
}

.resource-delete {
    padding: 6px 10px;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.2s;
    margin-left: 12px;
}

.resource-delete:hover {
    background: #dc2626;
}

/* Lesson Edit Section */
.lesson-detail-section {
    margin-bottom: 12px;
    font-size: 13px;
    padding: 8px 10px;
    line-height: 1.3;
    max-width: 260px;
    border-radius: 6px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-start;
}

.lesson-detail-section .lesson-info-section {
    display: flex;
    flex-direction: row;
    gap: 16px;
    align-items: flex-start;
}

.lesson-detail-section .info-group {
    display: flex;
    flex-direction: column;
    min-width: 90px;
    margin-right: 8px;
}
}

.lesson-edit-section {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    background: var(--surface-color);
}

.lesson-edit-section h3 {
    margin-top: 0;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group input[type="date"],
.form-group input[type="time"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input[type="date"]:focus,
.form-group input[type="time"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Responsive Modal */
@media (max-width: 768px) {
    .modal-content {
        max-width: 95vw;
    }

    .modal-large {
        max-width: 95vw;
    }

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

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 16px;
    }

    .editor-toolbar {
        flex-wrap: wrap;
    }
}