.login-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    margin-left: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.guest-btn {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.guest-btn:hover {
    box-shadow: 0 6px 20px rgba(108, 117, 125, 0.4);
}

.modern-login-modal {
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

.modern-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
}

.modern-login-content {
    background: #fff;
    border-radius: 20px;
    width: 90%;
    max-width: 420px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.modern-close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all 0.2s ease;
}

.modern-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.modern-tab-container {
    position: relative;
    padding: 0 24px;
    margin-top: 20px;
}

.modern-tabs {
    display: flex;
    background: #f8f9fa;
    border-radius: 12px;
    padding: 4px;
    position: relative;
}

.modern-tab-btn {
    flex: 1;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: #6c757d;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    position: relative;
    z-index: 2;
}

.modern-tab-btn.active {
    color: #667eea;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.modern-tab-content {
    padding: 24px;
}

.modern-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 0 16px;
    transition: all 0.3s ease;
}

.input-wrapper:focus-within {
    border-color: #667eea;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-icon {
    color: #6c757d;
    margin-right: 12px;
    flex-shrink: 0;
}

.input-wrapper input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 16px 0;
    font-size: 16px;
    color: #333;
    outline: none;
}

.input-wrapper input::placeholder {
    color: #6c757d;
}

.password-toggle {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: #6c757d;
    border-radius: 6px;
    transition: all 0.2s ease;
    margin-left: 8px;
}

.password-toggle:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.eye-icon {
    transition: all 0.2s ease;
}

.password-toggle.show .eye-icon {
    color: #667eea;
}

.checkbox-group {
    margin: 8px 0;
}

.modern-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #495057;
}

.modern-checkbox input {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid #e9ecef;
    border-radius: 4px;
    margin-right: 12px;
    position: relative;
    transition: all 0.3s ease;
}

.modern-checkbox input:checked + .checkmark {
    background: #667eea;
    border-color: #667eea;
}

.modern-checkbox input:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.modern-submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}

.modern-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.register-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.register-btn:hover {
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.4);
}

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

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@media (max-width: 480px) {
    .modern-login-content {
        width: 95%;
        margin: 10px;
    }
    
    .modal-header {
        padding: 16px 20px;
    }
    
    .modern-tab-content {
        padding: 20px;
    }
    
    .modal-title {
        font-size: 18px;
    }
}