/* ===== POPUP MODAL STYLES ===== */
/* Modal Overlay */
.curriculum-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(5px);
    z-index: 99999;
    justify-content: center;
    align-items: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

.curriculum-modal-overlay.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Modal Container */
.curriculum-modal-container {
    background: #ffffff;
    border-radius: 20px;
    max-width: 480px;
    width: 100%;
    padding: 45px 35px 35px;
    position: relative;
    animation: slideUp 0.4s ease;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes slideUp {
    from {
        transform: translateY(50px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* Close Button */
.curriculum-modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 30px;
    color: #999;
    cursor: pointer;
    background: none;
    border: none;
    transition: all 0.3s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.curriculum-modal-close:hover {
    color: #e74c3c;
    background: #f8f9fa;
    transform: rotate(90deg);
}

/* Modal Header */
.curriculum-modal-icon {
    text-align: center;
    font-size: 50px;
    margin-bottom: 10px;
}

.curriculum-modal-title {
    font-size: 26px;
    font-weight: 700;
    color: #2c3e50;
    text-align: center;
    margin-bottom: 5px;
}

.curriculum-modal-subtitle {
    text-align: center;
    color: #7f8c8d;
    font-size: 14px;
    margin-bottom: 25px;
    line-height: 1.5;
}

.curriculum-modal-course-name {
    text-align: center;
    color: #3498db;
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 20px;
    padding: 8px;
    background: #f0f8ff;
    border-radius: 8px;
}

/* Form Group */
.curriculum-form-group {
    margin-bottom: 20px;
}

.curriculum-form-group label {
    display: block;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 6px;
    font-size: 14px;
}

.curriculum-form-group label .required {
    color: #e74c3c;
    margin-left: 3px;
}

.curriculum-form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s;
    box-sizing: border-box;
    background: #fafafa;
}

.curriculum-form-group input:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.1);
    background: white;
}

.curriculum-form-group input.error {
    border-color: #e74c3c;
    background: #fff5f5;
}

.curriculum-form-group input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Error Message */
.curriculum-error-message {
    color: #e74c3c;
    font-size: 12px;
    margin-top: 5px;
    display: none;
    font-weight: 500;
}

.curriculum-error-message.show {
    display: block;
}

/* Submit Button */
.curriculum-submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    margin-top: 5px;
}

.curriculum-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.curriculum-submit-btn:active:not(:disabled) {
    transform: translateY(0);
}

.curriculum-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.curriculum-submit-btn .btn-loader {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

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

.curriculum-submit-btn.loading .btn-loader {
    display: flex;
}

.loader-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* Success Content */
.curriculum-success-content {
    text-align: center;
    padding: 20px 0;
}

.curriculum-success-icon {
    font-size: 70px;
    margin-bottom: 15px;
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); }
}

.curriculum-success-title {
    font-size: 24px;
    font-weight: 700;
    color: #2ecc71;
    margin-bottom: 10px;
}

.curriculum-success-text {
    color: #555;
    margin-bottom: 5px;
    line-height: 1.6;
}

.curriculum-success-small {
    color: #999;
    font-size: 13px;
}

/* Close Modal Button in Success */
.curriculum-close-success-btn {
    margin-top: 20px;
    padding: 12px 40px;
    background: #2ecc71;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.curriculum-close-success-btn:hover {
    background: #27ae60;
    transform: scale(1.05);
}

/* ===== RESPONSIVE DESIGN ===== */
/* Tablets */
@media (max-width: 768px) {
    .curriculum-modal-container {
        padding: 35px 25px 25px;
        max-width: 420px;
        margin: 10px;
    }
    
    .curriculum-modal-title {
        font-size: 22px;
    }
    
    .curriculum-modal-icon {
        font-size: 40px;
    }
    
    .curriculum-form-group input {
        padding: 10px 12px;
        font-size: 14px;
    }
    
    .curriculum-submit-btn {
        padding: 12px;
        font-size: 15px;
    }
}

/* Mobile Phones */
@media (max-width: 480px) {
    .curriculum-modal-overlay {
        padding: 10px;
        align-items: flex-end;
    }
    
    .curriculum-modal-container {
        padding: 30px 20px 20px;
        border-radius: 20px 20px 0 0;
        max-width: 100%;
        animation: slideUpMobile 0.4s ease;
    }
    
    @keyframes slideUpMobile {
        from {
            transform: translateY(100%);
        }
        to {
            transform: translateY(0);
        }
    }
    
    .curriculum-modal-title {
        font-size: 20px;
    }
    
    .curriculum-modal-subtitle {
        font-size: 13px;
    }
    
    .curriculum-modal-close {
        top: 10px;
        right: 15px;
        font-size: 26px;
    }
    
    .curriculum-form-group {
        margin-bottom: 15px;
    }
    
    .curriculum-form-group label {
        font-size: 13px;
    }
    
    .curriculum-form-group input {
        padding: 10px;
        font-size: 14px;
        border-radius: 8px;
    }
    
    .curriculum-submit-btn {
        padding: 12px;
        font-size: 14px;
        border-radius: 8px;
    }
    
    .curriculum-success-icon {
        font-size: 50px;
    }
    
    .curriculum-success-title {
        font-size: 20px;
    }
}

/* Small Phones */
@media (max-width: 360px) {
    .curriculum-modal-container {
        padding: 25px 15px 20px;
    }
    
    .curriculum-modal-title {
        font-size: 18px;
    }
    
    .curriculum-modal-icon {
        font-size: 35px;
    }
    
    .curriculum-form-group input {
        padding: 8px 10px;
        font-size: 13px;
    }
    
    .curriculum-submit-btn {
        padding: 10px;
        font-size: 13px;
    }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
    .curriculum-modal-container {
        background: #1a1a2e;
        color: #fff;
    }
    
    .curriculum-modal-title {
        color: #fff;
    }
    
    .curriculum-modal-subtitle {
        color: #aaa;
    }
    
    .curriculum-form-group label {
        color: #eee;
    }
    
    .curriculum-form-group input {
        background: #2a2a4a;
        border-color: #3a3a5a;
        color: white;
    }
    
    .curriculum-form-group input:focus {
        background: #2a2a4a;
        border-color: #667eea;
    }
    
    .curriculum-modal-course-name {
        background: #1a2a3a;
        color: #64b5f6;
    }
    
    .curriculum-modal-close:hover {
        background: #2a2a4a;
    }
}