.submit-section {
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

.submit-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-subtitle {
    color: maroon;
    font-size: 1.1rem;
    margin-top: 0.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.submit-container {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

/* Form Styles */
.submit-form {
    background: var(--background-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input[type="file"] {
    padding: 0.5rem;
    cursor: pointer;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-maroon);
}

.form-group input:disabled,
.form-group select:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
    opacity: 0.6;
}

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

.form-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.85rem;
    color: #666;
}

/* Form Divider */
.form-divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
}

.form-divider::before,
.form-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 45%;
    height: 1px;
    background-color: var(--border-color);
}

.form-divider::before {
    left: 0;
}

.form-divider::after {
    right: 0;
}

.form-divider span {
    background: var(--background-white);
    padding: 0 1rem;
    color: #666;
    font-weight: 500;
}

/* File Name Display */
.file-name-display {
    margin-top: 0.5rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px solid #bfdbfe;
    border-radius: 8px;
    color: #1e40af;
    font-size: 0.9rem;
    font-weight: 500;
    display: none;
    position: relative;
    overflow: hidden;
}

.file-name-display::before {
    content: '📁';
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

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

.btn-primary {
    background-color: var(--primary-maroon);
    color: var(--text-light);
}

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

.btn-primary:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background-color: #f0f0f0;
    color: var(--text-dark);
}

.btn-secondary:hover {
    background-color: #e0e0e0;
}

/* Submit Message */
.submit-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    font-weight: 500;
    display: none;
    animation: slideIn 0.3s ease;
}

.submit-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.submit-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Guidelines */
.submit-guidelines {
    background: var(--background-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.submit-guidelines h3 {
    color: var(--primary-maroon);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.submit-guidelines ul {
    list-style: none;
    padding: 0;
}

.submit-guidelines li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-dark);
}

.submit-guidelines li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-maroon);
    font-weight: bold;
}

/* Responsive */
@media (max-width: 768px) {
    .submit-section {
        padding: 2rem 0;
    }

    .submit-form {
        padding: 1.5rem;
    }

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

    .btn {
        width: 100%;
    }

    .submit-guidelines {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .submit-section {
        padding: 1.5rem 0;
        min-height: calc(100vh - 150px);
    }

    .submit-header {
        margin-bottom: 2rem;
    }

    .page-title {
        font-size: 1.5rem;
        font-weight: 600;
    }

    .page-subtitle {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .submit-container {
        gap: 2rem;
    }

    .submit-form {
        padding: 1.25rem;
        border-radius: 10px;
    }

    .form-group {
        margin-bottom: 1.25rem;
    }

    .form-group label {
        font-size: 0.9rem;
        font-weight: 600;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.625rem 0.75rem;
        font-size: 16px;
        border-radius: 6px;
    }

    .form-group textarea {
        min-height: 80px;
    }

    .form-hint {
        font-size: 0.8rem;
    }

    .form-divider {
        margin: 1.25rem 0;
    }

    .form-actions {
        flex-direction: column;
        gap: 0.75rem;
        margin-top: 1.5rem;
    }

    .btn {
        width: 100%;
        padding: 0.7rem 1.5rem;
        font-size: 0.95rem;
    }

    .submit-guidelines {
        padding: 1.25rem;
    }

    .submit-guidelines h3 {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }

    .submit-guidelines li {
        padding: 0.4rem 0;
        padding-left: 1.25rem;
        font-size: 0.9rem;
    }

    .file-name-display {
        font-size: 0.85rem;
        padding: 0.6rem 0.75rem;
    }

    .searchable-select-wrapper::after {
        right: 0.75rem;
    }

    .searchable-select-option {
        padding: 0.85rem 1rem;
    }

    .searchable-select-option .course-code {
        font-size: 0.95rem;
        margin-bottom: 0.2rem;
    }

    .searchable-select-option .course-name {
        font-size: 0.8rem;
    }

    .searchable-select-dropdown {
        max-height: 250px;
    }
}

/* Searchable Select Dropdown */
.searchable-select-wrapper {
    position: relative;
    width: 100%;
}

.searchable-select-input {
    width: 100% !important;
    padding: 0.75rem !important;
    padding-right: 2.5rem !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 8px !important;
    font-size: 1rem !important;
    background-color: white !important;
    cursor: text !important;
    transition: border-color 0.3s ease !important;
    pointer-events: auto !important;
}

.searchable-select-input::placeholder {
    color: #999;
}

.searchable-select-input:focus {
    outline: none !important;
    border-color: var(--primary-maroon) !important;
}

.searchable-select-input:disabled {
    background-color: #f5f5f5 !important;
    cursor: not-allowed !important;
}

.searchable-select-wrapper::after {
    content: '▼';
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: #666;
    font-size: 0.7rem;
}

.searchable-select-hidden {
    display: none !important;
}

.searchable-select-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 300px;
    overflow-y: auto;
    background-color: white;
    border: 2px solid var(--primary-maroon);
    border-top: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: none;
    margin-top: -2px;
}

.searchable-select-dropdown.show {
    display: block;
}

.searchable-select-option {
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid #e8e8e8;
    background-color: white;
    position: relative;
}

.searchable-select-option:last-child {
    border-bottom: none;
}

.searchable-select-option:hover {
    background-color: #f5f5f5;
    padding-left: 1.5rem;
    border-left: 3px solid var(--primary-maroon);
}

.searchable-select-option.selected {
    background: linear-gradient(135deg, var(--primary-maroon) 0%, #6b1835 100%);
    color: white;
    border-left: 4px solid var(--secondary-gold);
    padding-left: 1.5rem;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
}

.searchable-select-option .course-code {
    font-weight: 700;
    color: var(--primary-maroon);
    font-size: 1rem;
    letter-spacing: 0.5px;
    margin-bottom: 0.35rem;
    display: block;
}

.searchable-select-option.selected .course-code {
    color: var(--secondary-gold);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.searchable-select-option:hover .course-code {
    color: #5a1429;
}

.searchable-select-option .course-name {
    font-size: 0.875rem;
    color: #555;
    line-height: 1.4;
    display: block;
}

.searchable-select-option.selected .course-name {
    color: rgba(255, 255, 255, 0.95);
}

.searchable-select-option:hover .course-name {
    color: #333;
}

.searchable-select-no-results {
    padding: 1rem;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    font-style: italic;
}